CN111925160A - High-temperature-resistant anti-cracking concrete and preparation method thereof - Google Patents

High-temperature-resistant anti-cracking concrete and preparation method thereof Download PDF

Info

Publication number
CN111925160A
CN111925160A CN202010806707.7A CN202010806707A CN111925160A CN 111925160 A CN111925160 A CN 111925160A CN 202010806707 A CN202010806707 A CN 202010806707A CN 111925160 A CN111925160 A CN 111925160A
Authority
CN
China
Prior art keywords
parts
modified
stirring
temperature
preparing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010806707.7A
Other languages
Chinese (zh)
Inventor
胡昀飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202010806707.7A priority Critical patent/CN111925160A/en
Publication of CN111925160A publication Critical patent/CN111925160A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/22—Glass ; Devitrified glass
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • C04B18/027—Lightweight materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/20—Waste materials; Refuse organic from macromolecular compounds
    • C04B18/22—Rubber, e.g. ground waste tires
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/023—Chemical treatment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017—Aspects relating to the protection of the environment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34—Non-shrinking or non-cracking materials
    • C04B2111/343—Crack resistant materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses high-temperature-resistant anti-cracking concrete and a preparation method thereof. Firstly, adsorbing aerogel on the rough surface of the glass beads, and coating the glass beads with a modified polypropylene layer to obtain modified beads; then, natural wastes such as sepiolite and the like are used as raw materials to prepare porous ceramic balls, and epoxy groups are grafted outside the porous ceramic balls to prepare modified ceramic balls; the modified rubber is used as an adhesive material, the modified ceramic balls and the modified microspheres are combined to prepare modified rubber strips, the modified rubber strips and substances such as cement are mixed together to prepare concrete, and the prepared concrete sample has good high and low temperature resistance, excellent flame retardance, stronger hydrophobicity and difficult fracture, and also has certain noise reduction and radiation protection capabilities and stronger practicability.

Description

High-temperature-resistant anti-cracking concrete and preparation method thereof
Technical Field
The invention relates to the technical field of concrete, in particular to high-temperature-resistant anti-cracking concrete and a preparation method thereof.
Background
Along with the progress and development of nuclear industry technology, the application of radioactive isotopes in the medical field and scientific research aspect of China is more and more extensive, medical equipment such as X rays, CT and nuclear magnetic resonance inevitably leaks a part of rays when being widely applied to a modern medical system, various electronic products widely used in our lives also bring more or less radiation problems, crops are easily subjected to radiation of alpha, beta, gamma and other rays for a long time to generate genetic variation, the natural growth of the crops is influenced, and human beings are easily subjected to the pathological changes of human stem cells under the radiation condition of the rays for a long time to cause diseases such as cancer, leukemia and the like; the radiation shielding effect is a problem that people need to pay attention to, but at present, measures taken in China to reduce radiation problems are mainly to use large-volume concrete to block the radiation, the actual use area of a house can be reduced due to an excessively thick concrete wall, and the radiation protection effect is poor due to an excessively thin concrete wall; therefore, in order to improve the radiation protection capability of a building, people add metal powder into concrete, but the mechanical property of the concrete is poor, cracks are easy to generate after passing through a high-temperature environment and a low-temperature environment, the property of the radiation protection metal powder in the concrete can be changed due to the penetration of corrosive ions such as chloride ions, and meanwhile, the corrosion of a concrete wall can be accelerated; in addition, the existing building concrete material has poor thermal stability and poor flame retardant property, is easy to decompose and support combustion after encountering open fire, and has certain potential safety hazard.
In order to solve the above problems, there is a need for a concrete with excellent radiation protection performance, strong hydrophobicity, corrosion resistance, good high and low temperature resistance, and fracture resistance.
Disclosure of Invention
The invention aims to provide high-temperature-resistant and anti-cracking concrete and a preparation method thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a high-temperature-resistant anti-cracking concrete and a preparation method thereof.
The high-temperature-resistant anti-cracking concrete comprises the following raw material components: by weight, 100-300 parts of cement, 100-150 parts of sand, 300-600 parts of water, 250-450 parts of modified rubber strips, 100-200 parts of water reducing agent and 100-200 parts of basalt fibers.
The water reducing agent is a polycarboxylic acid water reducing agent;
further, the modified rubber strip comprises the following raw material components: 90-100 parts of assistant A, 70-80 parts of modified microspheres, 70-80 parts of modified ceramic balls and 80-90 parts of modified rubber.
Further, the auxiliary agent A comprises the following raw material components: 30-50 parts of polycarbosilane, 20-30 parts of superfine magnesium hydroxide, 20-30 parts of superfine zinc oxide, 10-15 parts of stearic acid and 10-15 parts of triaryl phosphate.
The auxiliary A mainly comprises superfine magnesium oxide and superfine zinc oxide; based on the poor compatibility of magnesium oxide and most polymers, polycarbosilane is particularly added into an auxiliary A to improve the compatibility of superfine magnesium oxide, SiC generated by cracking polycarbosilane is utilized to increase the compactness among superfine magnesium oxide particles and improve the thermal stability and flame retardant property of the auxiliary A, long alkyl on the surface of stearic acid reacts and is linked with superfine zinc oxide to generate zinc stearate with a hydrophobic effect under the promotion of absolute ethyl alcohol by stearic acid in the auxiliary A, and the prepared auxiliary A has a flame retardant effect and a strong hydrophobic effect.
Further, the modified microbead comprises the following raw material components: 80-90 parts of aerogel, 60-80 parts of modified polypropylene, 40-60 parts of silane coupling agent and 30-50 parts of hydrofluoric acid in parts by weight.
The silane coupling agent is KH 550.
The modified microbeads specially added in the invention have stronger heat preservation, heat insulation and radiation protection performance, and are excellent in corrosion resistance, mechanical performance and high temperature resistance. According to the modified micro-beads, the glass micro-beads are corroded by hydrofluoric acid to increase the surface roughness of the glass micro-beads, so that the aerogel can be attached to the surfaces of the glass micro-beads as much as possible, physical lock catches are formed between the rough surfaces of the glass micro-beads and the modified polypropylene layer, and the binding force between the glass micro-beads and the modified polypropylene layer is increased; the aerogel prepared by the sol-gel method is filled in gaps on the surfaces of the glass beads, so that the breaking risk of the aerogel is reduced, and the modified polypropylene layer is further coated on the outermost surface of the aerogel, so that the direct contact between the modified beads and the modified beads is effectively reduced, and the heat-insulating property of the modified beads is further enhanced.
Further, the modified ceramic ball comprises the following raw material components: 30-50 parts of diatom ooze, 30-50 parts of calcium oxide, 30-50 parts of sea foam broken stone, 10-20 parts of sodium hydroxy cellulose, 10-20 parts of sulfuric acid, 30-40 parts of N, N-carbonyl diimidazole, 20-30 parts of epoxy chloropropane, 16-18 parts of pore-forming agent, 16-18 parts of catalyst, 20-30 parts of latex powder and 30-50 parts of purified water sludge.
The catalyst is nickel nitrate; the pore-forming agent is polyethylene.
Furthermore, the invention uses natural wastes such as diatom ooze, sepiolite, purified water sludge and the like as raw materials, prepares the porous ceramic by a freeze drying method, polyethylene is cracked in situ to form a large number of pore channels, and diatom ooze, sepiolite and purified water sludge are cracked by heat to generate a large number of carbon nano tubes in situ on the pore channels, so that the roughness of the inner surface of the pore channels of the porous ceramic is improved, and the hydrophobic property of the porous ceramic is greatly improved; the preparation of the porous ceramic not only solves the problem of accumulation of natural wastes and reduces the construction cost, but also has strong sound absorption and noise reduction functions, can absorb and decompose harmful substances such as formaldehyde, benzene, ammonia and the like in the air, has stable chemical properties, and has certain heat preservation, heat insulation and flame retardant capabilities; furthermore, epoxy groups are grafted on the porous ceramic to modify the porous ceramic, hydroxyl groups on the sodium hydroxy cellulose are activated by N, N-carbonyl diimidazole, the sodium hydroxy cellulose and the chloropropylene oxide are subjected to grafting reaction, the hydroxyl groups are changed into ester groups or epoxy groups, the hydrogen bond effect is weakened, the hydrophilicity of the porous ceramic is reduced, and the hydrophobicity is further enhanced.
Further, the modified rubber comprises the following raw material components: by weight, 30-50 parts of waste rubber particles, 10-20 parts of sodium hydroxide, 10-20 parts of ethyl orthosilicate, 10-20 parts of absolute ethyl alcohol, 35-45 parts of chloroprene rubber, 15-25 parts of carbon black, 15-25 parts of anti-aging agent, 15-25 parts of auxiliary agent A, 20-24 parts of sulfur and 18-22 parts of accelerator.
The anti-aging agent is one or more of octylated diphenylamine, diaryl p-phenylenediamine and paraffin; the carbon black is a reinforcing filler; the accelerant is TMTM.
The main components of the modified rubber are waste rubber particles and chloroprene rubber, residual solvent in the waste rubber is removed by sodium hydroxide and ethyl orthosilicate, organic functional groups are introduced, the waste rubber and the chloroprene rubber are mixed, hydrolysis and condensation are carried out, the adhesiveness between the rubber and concrete is increased, the prepared modified rubber has good viscoelasticity, wear resistance and low temperature resistance, the mechanical strength is also excellent, the modified ceramic ball has good compatibility in the modified rubber due to the existence of epoxy groups in the modified ceramic ball, and the expanded graphite particularly added into the modified rubber can rapidly expand to form a carbon layer to cover the surface of the modified rubber to form a protective layer when encountering fire, so that the flame retardance and the heat resistance of the concrete are further increased.
The modified rubber is particularly used as an adhesive material, the modified microspheres and the modified ceramic balls are added into the modified rubber and uniformly mixed, and the modified microspheres and the modified ceramic balls are spherical substances, so that the compatibility of the modified ceramic balls and the modified microspheres in the modified rubber can be effectively improved; the rough structures on the surfaces of the modified ceramic balls and the modified microspheres can form physical lock catches with the modified rubber, so that the interface binding force is increased, and the modified ceramic balls and the modified microspheres are not easy to fall off; the modified rubber is drawn into rubber strips and is mixed with (base materials), due to epoxy groups on the modified ceramic balls, the modified rubber strips are not easy to agglomerate due to electrostatic repulsion, and meanwhile, the epoxy groups on the modified ceramic balls and hydroxyl groups, carboxyl groups and the like in concrete form a cross-linked network structure, so that the mechanical strength, the elastic modulus and the hydrophobic property of the concrete are effectively enhanced, the permeation of corrosive ions such as chloride ions is hindered, and the corrosion resistance of the concrete is improved.
Further, the preparation of the modified polypropylene mainly comprises the following steps: melting polypropylene at the temperature of 175-195 ℃, adding a rare earth polypropylene beta nucleating agent, stirring and reacting for 30-40min at the temperature of 200-300r/min, adding an auxiliary agent A, nano iron ore and nano barite, and continuously stirring and reacting for 1-2h to obtain a modified polypropylene solution.
Furthermore, amino groups are grafted on the surfaces of the glass beads by using a silane coupling agent, and the rare earth polypropylene beta nucleating agent is self-assembled into dendritic crystals in polypropylene by using the complexation of coordination bonds among molecules, so that the amino groups grafted on the surfaces of the glass beads and dicarboxylic acid and amide groups carried by the dendritic crystals are subjected to complexation reaction, and the dendritic crystals are aggregated and firmly adsorbed on the surfaces of the glass beads to obtain modified beads with rough surfaces; the polypropylene layer in the invention is particularly added with nano iron ore and nano barite to improve the radiation protection capability of the concrete.
Furthermore, the aerogel comprises the following raw material components, by weight, 20-30 parts of aluminum sec-butoxide, 20-30 parts of ethyl orthosilicate, 15-20 parts of hydrochloric acid and 8-10 parts of glacial acetic acid.
A preparation method of high-temperature-resistant anti-cracking concrete comprises the following steps:
s1, preparing an auxiliary agent A;
s2, preparing modified microbeads;
s3, preparing a modified ceramic ball;
s4, preparing modified rubber;
s5, synthesizing a modified rubber strip;
s6, preparing concrete.
The method specifically comprises the following steps:
s1, preparing an auxiliary agent A: adding polycarbosilane into xylene, stirring and dissolving, adding superfine magnesium hydroxide, superfine zinc oxide, stearic acid, absolute ethyl alcohol and triaryl phosphate, and stirring at a high speed of 100r/min for 3-8min by 800-;
s2, preparing modified microbeads;
a. soaking the glass beads in hydrofluoric acid for 45-75min to obtain beads A;
b. preparing aerogel: adding aluminum sec-butoxide into the ethanol solution at the temperature of 58-78 ℃, fully stirring and dissolving, cooling to room temperature, sequentially adding ethyl orthosilicate and hydrochloric acid, stirring at the rotating speed of 100-;
c. adding the microbeads A into the aerogel liquid, stirring and reacting for 18-24h, taking out, standing and aging for 24-36h, washing with ethanol and drying to obtain microbeads B;
d. preparing modified polypropylene;
e. adding the microbeads B into a silane coupling agent at the temperature of 68-78 ℃, stirring and reacting for 6-8h at the rotation speed of 1300r/min of 1100-;
s3, preparing a modified ceramic ball:
a. uniformly mixing the diatom ooze, the calcium oxide and the sea foam broken stone, performing ball milling for 2-4h, and sieving through a 150-fold sieve of 250 mu m to obtain a material A;
b. adding sodium hydroxy cellulose into a sulfuric acid solution at the temperature of 43-53 ℃, stirring for reaction for 35-55min, adjusting the pH value to 6-8, freeze-drying, taking out and placing into an acetone solution, ultrasonically dispersing for 20-30min, raising the temperature to 70-80 ℃, reacting for 6-10h at constant temperature under the condition of nitrogen, adding N, N-carbonyldiimidazole, continuing stirring for reaction for 6-10h, adding epichlorohydrin, washing with absolute ethyl alcohol, and freeze-drying to obtain a material B;
c. melting polyethylene at the temperature of 88-95 ℃, adding nickel nitrate and a material B, magnetically stirring for 20-40min, sequentially adding latex powder, purified water sludge and the material A, uniformly stirring, pouring into a mold, freezing and molding by using liquid nitrogen, vacuum drying for 20-30h, sintering at the temperature of 850-1050 ℃ for 25-35h, preserving heat for 2.5-3.5h, and taking out to obtain a modified ceramic ball;
s4, preparing modified rubber:
a. waste rubber treatment: adding sodium hydroxide into the waste rubber particles, stirring at the rotating speed of 900r/min for 1.5-2.5h at 700-;
b. modified rubber solution: setting the temperature to be 78-98 ℃, sequentially adding rubber particles and chloroprene rubber under the condition of a rotating speed of 80-100r/min, stirring and reacting for 20-30min, adding carbon black, an anti-aging agent and an auxiliary agent A after uniform mixing, uniformly mixing, reacting for 1-2h, adding sulfur and an accelerator, and continuously stirring and reacting completely to obtain a modified rubber solution;
s5, synthesizing a modified rubber strip;
adding the modified ceramic balls and the modified microbeads into the modified rubber solution, uniformly stirring at the rotating speed of 800r/min for 1-2h, standing for 8-12h, drawing into rubber strips, finally vulcanizing at 155 ℃ for 1.5-2.5h, and standing for 20-26h at room temperature to obtain the modified rubber strips;
s6, preparing concrete: and (3) feeding materials such as cement, sand stone, basalt fiber and the like into a stirrer, adding water, uniformly stirring, adding the modified rubber strips, and continuously uniformly stirring to obtain the high-temperature-resistant anti-cracking concrete mortar.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the aerogel is adsorbed on the rough surface of the glass microspheres and is coated by the modified polypropylene layer, so that the problem of easy breakage of the aerogel is avoided, the direct contact between the glass microspheres is reduced, the heat-insulating property is enhanced, and the radiation-proof property of concrete is enhanced by specially adding the radiation-proof substance.
The porous ceramic ball is prepared by using natural wastes such as sepiolite and the like as raw materials, so that the problem of resource waste is properly solved, the using amount of sandstone is reduced, the mechanical property of concrete is improved, the building cost is reduced, the epoxy group is grafted outside the porous ceramic ball, the compatibility problem of the modified ceramic ball in modified rubber is improved, and the prepared modified ceramic has good heat preservation and insulation, corrosion resistance, noise reduction and high and low temperature resistance.
The modified rubber is used as an adhesive material, the modified ceramic balls and the modified microspheres are effectively combined to prepare the modified rubber strip, the modified rubber strip and substances such as cement are mixed together to prepare the concrete, the modified rubber strip can effectively increase the mechanical property and the elastic modulus of the concrete, organic functional groups on the modified rubber strip can form a cross-linked grid structure with hydroxyl, carboxyl and other groups in the concrete, and the prepared concrete sample has good high and low temperature resistance, excellent flame retardance, stronger hydrophobicity, difficult fracture and stronger practicability.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.
Example 1
S1, preparing an auxiliary agent A: adding polycarbosilane into xylene, stirring and dissolving, adding superfine magnesium hydroxide, superfine zinc oxide, stearic acid, absolute ethyl alcohol and triaryl phosphate, and stirring at a high speed of 800r/min for 3min to obtain an auxiliary A;
s2, preparing modified microbeads;
a. placing the glass beads in hydrofluoric acid for soaking for 45min to obtain beads A;
b. preparing aerogel: adding aluminum sec-butoxide into an ethanol solution at the temperature of 58 ℃, fully stirring and dissolving, cooling to room temperature, sequentially adding tetraethoxysilane and hydrochloric acid, stirring at the rotating speed of 100r/min for 1h, adding glacial acetic acid, and stirring for reacting for 25min to obtain an aerogel liquid;
c. adding the microbeads A into the aerogel liquid, stirring for reacting for 18h, taking out, standing for aging for 24h, washing with ethanol, and drying to obtain microbeads B;
d. preparing modified polypropylene;
e. adding the microbeads B into a silane coupling agent at 68 ℃, stirring and reacting for 6 hours at the rotating speed of 1100r/min, taking out and placing in modified polypropylene liquid, raising the temperature to 230 ℃, simultaneously reducing the rotating speed to 700r/min, stirring and reacting for 5 hours, taking out, and cooling to room temperature to obtain modified microbeads;
s3, preparing a modified ceramic ball:
a. uniformly mixing diatom ooze, calcium oxide and sea foam broken stone, performing ball milling for 2 hours, and screening by a 150-micron screen to obtain a material A;
b. adding sodium hydroxy cellulose into a sulfuric acid solution at the temperature of 43 ℃, stirring for reaction for 35min, adjusting the pH value to 6, freeze-drying, taking out and placing into an acetone solution, ultrasonically dispersing for 20min, raising the temperature to 70 ℃, reacting at constant temperature for 6h under the condition of nitrogen, adding N, N-carbonyl diimidazole, continuing stirring for reaction for 6h, adding epoxy chloropropane, washing with absolute ethyl alcohol, and freeze-drying to obtain a material B;
c. melting polyethylene at the temperature of 88 ℃, adding nickel nitrate and a material B, magnetically stirring for 20min, sequentially adding latex powder, purified water sludge and the material A, uniformly stirring, pouring into a mold, freezing and molding by using liquid nitrogen, drying in vacuum for 20h, sintering at the temperature of 850 ℃ for 25h, preserving heat for 2.5h, and taking out to obtain a modified ceramic ball;
s4, preparing modified rubber:
a. waste rubber treatment: adding sodium hydroxide into waste rubber particles, stirring at the rotating speed of 700r/min for 1.5h, filtering and washing with tap water, adding tetraethoxysilane and absolute ethyl alcohol, continuously stirring for 1.3h, drying at 65 ℃ for 3h, and shearing to obtain rubber particles;
b. modified rubber solution: setting the temperature to 78 ℃, sequentially adding rubber particles and chloroprene rubber at the rotating speed of 80r/min, stirring and reacting for 20min, adding carbon black, an anti-aging agent and an auxiliary agent A after uniformly mixing, adding sulfur and an accelerator after reacting for 1h, and continuously stirring and reacting completely to obtain modified rubber solution;
s5, synthesizing a modified rubber strip;
adding the modified ceramic balls and the modified microbeads into the modified rubber liquid, stirring uniformly, stirring at the rotating speed of 500r/min for 1h, standing for 8h, drawing into rubber strips, finally vulcanizing at 145 ℃ for 1.5h, taking out, and standing at room temperature for 20h to obtain the modified rubber strips;
s6, preparing concrete: and (3) feeding materials such as cement, sand stone, basalt fiber and the like into a stirrer, adding water, uniformly stirring, adding the modified rubber strips, and continuously uniformly stirring to obtain the high-temperature-resistant anti-cracking concrete mortar.
The high-temperature-resistant anti-cracking concrete comprises the following raw material components: the cement mortar comprises, by weight, 100 parts of cement, 100 parts of gravel, 300 parts of water, 250 parts of modified rubber strips, 100 parts of a water reducing agent and 100 parts of basalt fibers.
The modified rubber strip comprises the following raw material components: the modified rubber comprises, by weight, 90 parts of an auxiliary agent A, 70 parts of modified microbeads, 70 parts of modified ceramic balls and 80 parts of modified rubber.
The auxiliary agent A comprises the following raw material components: 30 parts of polycarbosilane, 20 parts of superfine magnesium hydroxide, 20 parts of superfine zinc oxide, 10 parts of stearic acid and 10 parts of triaryl phosphate.
The modified microbead comprises the following raw material components: the coating comprises, by weight, 80 parts of aerogel, 60 parts of modified polypropylene, 40 parts of silane coupling agent and 30 parts of hydrofluoric acid.
The modified ceramic ball comprises the following raw material components: the composite material comprises, by weight, 30 parts of diatom ooze, 30 parts of calcium oxide, 30 parts of sea foam broken stone, 10 parts of sodium hydroxy cellulose, 10 parts of sulfuric acid, 30 parts of N, N-carbonyl diimidazole, 20 parts of epoxy chloropropane, 16 parts of a pore-forming agent, 16 parts of a catalyst, 20 parts of latex powder and 30 parts of purified water sludge.
The modified rubber comprises the following raw material components: the rubber material comprises, by weight, 30 parts of waste rubber particles, 10 parts of sodium hydroxide, 10 parts of ethyl orthosilicate, 10 parts of absolute ethyl alcohol, 35 parts of chloroprene rubber, 15 parts of carbon black, 15 parts of an anti-aging agent, 15 parts of an auxiliary agent A, 20 parts of sulfur and 18 parts of a promoter.
The aerogel comprises the following raw material components, by weight, 20 parts of aluminum sec-butoxide, 20 parts of ethyl orthosilicate, 15 parts of hydrochloric acid and 8 parts of glacial acetic acid.
Example 2
S1, preparing an auxiliary agent A: adding polycarbosilane into xylene, stirring and dissolving, adding superfine magnesium hydroxide, superfine zinc oxide, stearic acid, absolute ethyl alcohol and triaryl phosphate, and stirring at a high speed of 900r/min for 6min to obtain an auxiliary A;
s2, preparing modified microbeads;
a. placing the glass beads in hydrofluoric acid for soaking for 55min to obtain beads A;
b. preparing aerogel: adding aluminum sec-butoxide into an ethanol solution at 68 ℃, fully stirring and dissolving, cooling to room temperature, sequentially adding tetraethoxysilane and hydrochloric acid, stirring at the rotating speed of 150r/min for 1.5h, adding glacial acetic acid, and stirring for reacting for 35min to obtain aerogel liquid;
c. adding the microbeads A into the aerogel liquid, stirring for reacting for 21 hours, taking out, standing for aging for 30 hours, washing with ethanol and drying to obtain microbeads B;
d. preparing modified polypropylene;
e. adding the microbeads B into a silane coupling agent at 73 ℃, stirring and reacting at the rotating speed of 1200r/min for 7h, taking out and placing in modified polypropylene liquid, raising the temperature to 240 ℃, simultaneously reducing the rotating speed to 750r/min, stirring and reacting for 6h, taking out, and cooling to room temperature to obtain modified microbeads;
s3, preparing a modified ceramic ball:
a. uniformly mixing diatom ooze, calcium oxide and sea foam broken stone, performing ball milling for 3 hours, and sieving by using a 200-micron sieve to obtain a material A;
b. adding sodium hydroxy cellulose into a sulfuric acid solution at the temperature of 48 ℃, stirring for reaction for 45min, adjusting the pH value to 7, freeze-drying, taking out and placing into an acetone solution, ultrasonically dispersing for 25min, raising the temperature to 75 ℃, reacting at constant temperature for 8h under the nitrogen condition, adding N, N-carbonyl diimidazole, continuing stirring for reaction for 8h, adding epoxy chloropropane, washing with absolute ethyl alcohol, and freeze-drying to obtain a material B;
c. melting polyethylene at the temperature of 92 ℃, adding nickel nitrate and a material B, magnetically stirring for 30min, sequentially adding latex powder, purified water sludge and the material A, uniformly stirring, pouring into a mold, freezing and molding by using liquid nitrogen, drying in vacuum for 25h, sintering at the temperature of 950 ℃ for 25-35h, preserving heat for 3.0h, and taking out to obtain modified ceramic balls;
s4, preparing modified rubber:
a. waste rubber treatment: adding sodium hydroxide into waste rubber particles, stirring at the rotating speed of 800r/min for 2 hours, filtering and washing with tap water, adding tetraethoxysilane and absolute ethyl alcohol, continuously stirring for 1.6 hours, drying at the temperature of 70 ℃ for 4 hours, and shearing to obtain rubber particles;
b. modified rubber solution: setting the temperature to 88 ℃, sequentially adding rubber particles and chloroprene rubber at the rotation speed of 90r/min, stirring and reacting for 25min, adding carbon black, an anti-aging agent and an auxiliary agent A after uniform mixing, uniformly mixing, reacting for 1.5h, adding sulfur and an accelerator, and continuously stirring and reacting completely to obtain a modified rubber solution;
s5, synthesizing a modified rubber strip;
adding the modified ceramic balls and the modified microbeads into the modified rubber liquid, stirring uniformly, stirring at the rotating speed of 600r/min for 1.5h, standing for 10h, drawing into rubber strips, finally vulcanizing at 150 ℃ for 2.0h, taking out, and standing at room temperature for 23h to obtain the modified rubber strips;
s6, preparing concrete: and (3) feeding materials such as cement, sand stone, basalt fiber and the like into a stirrer, adding water, uniformly stirring, adding the modified rubber strips, and continuously uniformly stirring to obtain the high-temperature-resistant anti-cracking concrete mortar.
The high-temperature-resistant anti-cracking concrete comprises the following raw material components: 200 parts of cement, 125 parts of gravel, 450 parts of water, 350 parts of modified rubber strips, 150 parts of water reducing agent and 150 parts of basalt fiber.
The modified rubber strip comprises the following raw material components: 95 parts of an auxiliary agent A, 75 parts of modified microspheres, 75 parts of modified ceramic balls and 85 parts of modified rubber.
The auxiliary agent A comprises the following raw material components: 40 parts of polycarbosilane, 25 parts of superfine magnesium hydroxide, 25 parts of superfine zinc oxide, 13 parts of stearic acid and 13 parts of triaryl phosphate.
The modified microbead comprises the following raw material components: 85 parts of aerogel, 70 parts of modified polypropylene, 50 parts of silane coupling agent and 40 parts of hydrofluoric acid in parts by weight.
The modified ceramic ball comprises the following raw material components: the water purifying agent comprises, by weight, 40 parts of diatom ooze, 40 parts of calcium oxide, 40 parts of sea foam broken stone, 15 parts of sodium hydroxy cellulose, 15 parts of sulfuric acid, 35 parts of N, N-carbonyl diimidazole, 25 parts of epoxy chloropropane, 17 parts of pore-forming agent, 17 parts of catalyst, 25 parts of latex powder and 40 parts of purified water sludge.
The modified rubber comprises the following raw material components: the rubber material comprises, by weight, 40 parts of waste rubber particles, 15 parts of sodium hydroxide, 15 parts of ethyl orthosilicate, 15 parts of absolute ethyl alcohol, 40 parts of chloroprene rubber, 20 parts of carbon black, 20 parts of an anti-aging agent, 20 parts of an auxiliary agent A, 22 parts of sulfur and 20 parts of a promoter.
The aerogel comprises the following raw material components, by weight, 20 parts of aluminum sec-butoxide, 20 parts of ethyl orthosilicate, 15 parts of hydrochloric acid and 8 parts of glacial acetic acid.
Example 3
S1, preparing an auxiliary agent A: adding polycarbosilane into xylene, stirring and dissolving, adding superfine magnesium hydroxide, superfine zinc oxide, stearic acid, absolute ethyl alcohol and triaryl phosphate, and stirring at a high speed of 100r/min for 8min to obtain an auxiliary A;
s2, preparing modified microbeads;
a. placing the glass beads in hydrofluoric acid for soaking for 75min to obtain beads A;
b. preparing aerogel: adding aluminum sec-butoxide into an ethanol solution at 78 ℃, fully stirring and dissolving, cooling to room temperature, sequentially adding tetraethoxysilane and hydrochloric acid, stirring at the rotating speed of 200r/min for 1-2h, adding glacial acetic acid, and stirring for reacting for 45min to obtain aerogel liquid;
c. adding the microbeads A into the aerogel liquid, stirring for reacting for 24 hours, taking out, standing for aging for 36 hours, washing with ethanol and drying to obtain microbeads B;
d. preparing modified polypropylene;
e. adding the microbeads B into a silane coupling agent at the temperature of 68-78 ℃, stirring and reacting at the rotating speed of 1300r/min for 8 hours, taking out and placing in modified polypropylene liquid, raising the temperature to 250 ℃, simultaneously reducing the rotating speed to 800r/min, stirring and reacting for 7 hours, taking out, and cooling to room temperature to obtain modified microbeads;
s3, preparing a modified ceramic ball:
a. uniformly mixing diatom ooze, calcium oxide and sea foam broken stone, performing ball milling for 4 hours, and screening by a 250-micrometer sieve to obtain a material A;
b. adding sodium hydroxy cellulose into a sulfuric acid solution at the temperature of 53 ℃, stirring for reaction for 55min, adjusting the pH value to 8, freeze-drying, taking out and placing into an acetone solution, ultrasonically dispersing for 30min, raising the temperature to 80 ℃, reacting at constant temperature for 10h under the nitrogen condition, adding N, N-carbonyl diimidazole, continuing stirring for reaction for 10h, adding epoxy chloropropane, washing with absolute ethyl alcohol, and freeze-drying to obtain a material B;
c. melting polyethylene at the temperature of 95 ℃, adding nickel nitrate and a material B, magnetically stirring for 40min, sequentially adding latex powder, purified water sludge and the material A, uniformly stirring, pouring into a mold, freezing and molding by using liquid nitrogen, drying in vacuum for 30h, sintering at the temperature of 1050 ℃ for 35h, preserving heat for 3.5h, and taking out to obtain a modified ceramic ball;
s4, preparing modified rubber:
a. waste rubber treatment: adding sodium hydroxide into waste rubber particles, stirring at the rotating speed of 900r/min for 2.5h, filtering and washing with tap water, adding tetraethoxysilane and absolute ethyl alcohol, continuously stirring for 1.8h, drying at the temperature of 75 ℃ for 6h, and shearing to obtain rubber particles;
b. modified rubber solution: setting the temperature to 98 ℃, sequentially adding rubber particles and chloroprene rubber at the rotating speed of 100r/min, stirring for reaction for 30min, adding carbon black, an anti-aging agent and an auxiliary agent A after uniform mixing, uniformly mixing, adding sulfur and an accelerator after reaction for 2h, and continuously stirring for complete reaction to obtain a modified rubber solution;
s5, synthesizing a modified rubber strip;
adding the modified ceramic balls and the modified microbeads into the modified rubber liquid, stirring uniformly, stirring at the rotating speed of 800r/min for 2 hours, standing for 12 hours, drawing into rubber strips, finally vulcanizing at 155 ℃ for 2.5 hours, taking out, and standing at room temperature for 26 hours to obtain the modified rubber strips;
s6, preparing concrete: and (3) feeding materials such as cement, sand stone, basalt fiber and the like into a stirrer, adding water, uniformly stirring, adding the modified rubber strips, and continuously uniformly stirring to obtain the high-temperature-resistant anti-cracking concrete mortar.
The high-temperature-resistant anti-cracking concrete comprises the following raw material components: the cement mortar comprises, by weight, 300 parts of cement, 150 parts of gravel, 600 parts of water, 450 parts of modified rubber strips, 200 parts of a water reducing agent and 200 parts of basalt fibers.
The modified rubber strip comprises the following raw material components: 100 parts of an auxiliary agent A, 80 parts of modified microspheres, 80 parts of modified ceramic balls and 90 parts of modified rubber.
The auxiliary agent A comprises the following raw material components: the paint comprises, by weight, 50 parts of polycarbosilane, 30 parts of superfine magnesium hydroxide, 30 parts of superfine zinc oxide, 15 parts of stearic acid and 15 parts of triaryl phosphate.
The modified microbead comprises the following raw material components: 90 parts of aerogel, 80 parts of modified polypropylene, 60 parts of silane coupling agent and 50 parts of hydrofluoric acid in parts by weight.
The modified ceramic ball comprises the following raw material components: the composite material comprises, by weight, 50 parts of diatom ooze, 50 parts of calcium oxide, 50 parts of sea foam broken stone, 20 parts of sodium hydroxy cellulose, 20 parts of sulfuric acid, 40 parts of N, N-carbonyl diimidazole, 30 parts of epoxy chloropropane, 18 parts of a pore-forming agent, 18 parts of a catalyst, 30 parts of latex powder and 50 parts of purified water sludge.
The modified rubber comprises the following raw material components: the rubber material comprises, by weight, 50 parts of waste rubber particles, 20 parts of sodium hydroxide, 20 parts of ethyl orthosilicate, 20 parts of absolute ethyl alcohol, 45 parts of chloroprene rubber, 25 parts of carbon black, 25 parts of an anti-aging agent, 25 parts of an auxiliary agent A, 24 parts of sulfur and 22 parts of a promoter.
The aerogel comprises the following raw material components, by weight, 30 parts of aluminum sec-butoxide, 30 parts of ethyl orthosilicate, 20 parts of hydrochloric acid and 10 parts of glacial acetic acid.
Example 4
S1, preparing an auxiliary agent A: adding polycarbosilane into xylene, stirring and dissolving, adding superfine magnesium hydroxide, superfine zinc oxide, stearic acid, absolute ethyl alcohol and triaryl phosphate, and stirring at a high speed of 100r/min for 8min to obtain an auxiliary A;
s2, preparing a modified ceramic ball:
a. uniformly mixing diatom ooze, calcium oxide and sea foam broken stone, performing ball milling for 4 hours, and screening by a 250-micrometer sieve to obtain a material A;
b. adding sodium hydroxy cellulose into a sulfuric acid solution at the temperature of 53 ℃, stirring for reaction for 55min, adjusting the pH value to 8, freeze-drying, taking out and placing into an acetone solution, ultrasonically dispersing for 30min, raising the temperature to 80 ℃, reacting at constant temperature for 10h under the nitrogen condition, adding N, N-carbonyl diimidazole, continuing stirring for reaction for 10h, adding epoxy chloropropane, washing with absolute ethyl alcohol, and freeze-drying to obtain a material B;
c. melting polyethylene at the temperature of 95 ℃, adding nickel nitrate and a material B, magnetically stirring for 40min, sequentially adding latex powder, purified water sludge and the material A, uniformly stirring, pouring into a mold, freezing and molding by using liquid nitrogen, drying in vacuum for 30h, sintering at the temperature of 1050 ℃ for 35h, preserving heat for 3.5h, and taking out to obtain a modified ceramic ball;
s4, preparing modified rubber:
a. waste rubber treatment: adding sodium hydroxide into waste rubber particles, stirring at the rotating speed of 900r/min for 2.5h, filtering and washing with tap water, adding tetraethoxysilane and absolute ethyl alcohol, continuously stirring for 1.8h, drying at the temperature of 75 ℃ for 6h, and shearing to obtain rubber particles;
b. modified rubber solution: setting the temperature to 98 ℃, sequentially adding rubber particles and chloroprene rubber at the rotating speed of 100r/min, stirring for reaction for 30min, adding carbon black, an anti-aging agent and an auxiliary agent A after uniform mixing, uniformly mixing, adding sulfur and an accelerator after reaction for 2h, and continuously stirring for complete reaction to obtain a modified rubber solution;
s5, synthesizing a modified rubber strip;
adding the modified ceramic balls into the modified rubber solution, stirring uniformly, stirring at the rotating speed of 800r/min for 2h, standing for 12h, drawing into rubber strips, finally vulcanizing at 155 ℃ for 2.5h, taking out, and standing at room temperature for 26h to obtain the modified rubber strips;
s6, preparing concrete: and (3) feeding materials such as cement, sand stone, basalt fiber and the like into a stirrer, adding water, uniformly stirring, adding the modified rubber strips, and continuously uniformly stirring to obtain the high-temperature-resistant anti-cracking concrete mortar.
Example 5
S1, preparing an auxiliary agent A: adding polycarbosilane into xylene, stirring and dissolving, adding superfine magnesium hydroxide, superfine zinc oxide, stearic acid, absolute ethyl alcohol and triaryl phosphate, and stirring at a high speed of 100r/min for 8min to obtain an auxiliary A;
s2, preparing modified microbeads;
a. placing the glass beads in hydrofluoric acid for soaking for 75min to obtain beads A;
b. preparing aerogel: adding aluminum sec-butoxide into an ethanol solution at 78 ℃, fully stirring and dissolving, cooling to room temperature, sequentially adding tetraethoxysilane and hydrochloric acid, stirring at the rotating speed of 200r/min for 1-2h, adding glacial acetic acid, and stirring for reacting for 45min to obtain aerogel liquid;
c. adding the microbeads A into the aerogel liquid, stirring for reacting for 24 hours, taking out, standing for aging for 36 hours, washing with ethanol and drying to obtain microbeads B;
d. preparing modified polypropylene;
e. adding the microbeads B into a silane coupling agent at the temperature of 68-78 ℃, stirring and reacting at the rotating speed of 1300r/min for 8 hours, taking out and placing in modified polypropylene liquid, raising the temperature to 250 ℃, simultaneously reducing the rotating speed to 800r/min, stirring and reacting for 7 hours, taking out, and cooling to room temperature to obtain modified microbeads;
s3, preparing modified rubber:
a. waste rubber treatment: adding sodium hydroxide into waste rubber particles, stirring at the rotating speed of 900r/min for 2.5h, filtering and washing with tap water, adding tetraethoxysilane and absolute ethyl alcohol, continuously stirring for 1.8h, drying at the temperature of 75 ℃ for 6h, and shearing to obtain rubber particles;
b. modified rubber solution: setting the temperature to 98 ℃, sequentially adding rubber particles and chloroprene rubber at the rotating speed of 100r/min, stirring for reaction for 30min, adding carbon black, an anti-aging agent and an auxiliary agent A after uniform mixing, uniformly mixing, adding sulfur and an accelerator after reaction for 2h, and continuously stirring for complete reaction to obtain a modified rubber solution;
s5, synthesizing a modified rubber strip;
adding the modified microspheres into the modified rubber solution, uniformly stirring, stirring at the rotating speed of 800r/min for 2 hours, standing for 12 hours, drawing into rubber strips, finally vulcanizing at 155 ℃ for 2.5 hours, taking out, and standing at room temperature for 26 hours to obtain the modified rubber strips;
s6, preparing concrete: and (3) feeding materials such as cement, sand stone, basalt fiber and the like into a stirrer, adding water, uniformly stirring, adding the modified rubber strips, and continuously uniformly stirring to obtain the high-temperature-resistant anti-cracking concrete mortar.
Example 6
S1, preparing an auxiliary agent A: adding polycarbosilane into xylene, stirring and dissolving, adding superfine magnesium hydroxide, superfine zinc oxide, stearic acid, absolute ethyl alcohol and triaryl phosphate, and stirring at a high speed of 100r/min for 8min to obtain an auxiliary A;
s2, preparing modified microbeads;
a. placing the glass beads in hydrofluoric acid for soaking for 75min to obtain beads A;
b. preparing aerogel: adding aluminum sec-butoxide into an ethanol solution at 78 ℃, fully stirring and dissolving, cooling to room temperature, sequentially adding tetraethoxysilane and hydrochloric acid, stirring at the rotating speed of 200r/min for 1-2h, adding glacial acetic acid, and stirring for reacting for 45min to obtain aerogel liquid;
c. adding the microbeads A into the aerogel liquid, stirring for reacting for 24 hours, taking out, standing for aging for 36 hours, washing with ethanol and drying to obtain microbeads B;
d. preparing modified polypropylene;
e. adding the microbeads B into a silane coupling agent at the temperature of 68-78 ℃, stirring and reacting at the rotating speed of 1300r/min for 8 hours, taking out and placing in modified polypropylene liquid, raising the temperature to 250 ℃, simultaneously reducing the rotating speed to 800r/min, stirring and reacting for 7 hours, taking out, and cooling to room temperature to obtain modified microbeads;
s3, preparing a modified ceramic ball:
a. uniformly mixing diatom ooze, calcium oxide and sea foam broken stone, performing ball milling for 4 hours, and screening by a 250-micrometer sieve to obtain a material A;
b. adding sodium hydroxy cellulose into a sulfuric acid solution at the temperature of 53 ℃, stirring for reaction for 55min, adjusting the pH value to 8, freeze-drying, taking out and placing into an acetone solution, ultrasonically dispersing for 30min, raising the temperature to 80 ℃, reacting at constant temperature for 10h under the nitrogen condition, adding N, N-carbonyl diimidazole, continuing stirring for reaction for 10h, adding epoxy chloropropane, washing with absolute ethyl alcohol, and freeze-drying to obtain a material B;
c. melting polyethylene at the temperature of 95 ℃, adding nickel nitrate and a material B, magnetically stirring for 40min, sequentially adding latex powder, purified water sludge and the material A, uniformly stirring, pouring into a mold, freezing and molding by using liquid nitrogen, drying in vacuum for 30h, sintering at the temperature of 1050 ℃ for 35h, preserving heat for 3.5h, and taking out to obtain a modified ceramic ball;
s4, preparing concrete: and (3) feeding materials such as cement, sand stone, basalt fiber and the like into a stirrer, adding water, uniformly stirring, adding the modified ceramic balls and the modified microspheres, and continuously uniformly stirring to obtain the high-temperature-resistant anti-cracking concrete mortar.
Example 7
S1, preparing an auxiliary agent A: adding polycarbosilane into xylene, stirring and dissolving, adding superfine magnesium hydroxide, superfine zinc oxide, stearic acid, absolute ethyl alcohol and triaryl phosphate, and stirring at a high speed of 100r/min for 8min to obtain an auxiliary A;
s2, preparing modified microbeads;
a. placing the glass beads in hydrofluoric acid for soaking for 75min to obtain beads A;
b. preparing aerogel: adding aluminum sec-butoxide into an ethanol solution at 78 ℃, fully stirring and dissolving, cooling to room temperature, sequentially adding tetraethoxysilane and hydrochloric acid, stirring at the rotating speed of 200r/min for 1-2h, adding glacial acetic acid, and stirring for reacting for 45min to obtain aerogel liquid;
c. adding the microbeads A into the aerogel liquid, stirring for reacting for 24 hours, taking out, standing for aging for 36 hours, washing with ethanol and drying to obtain modified microbeads;
s3, preparing a modified ceramic ball:
a. uniformly mixing diatom ooze, calcium oxide and sea foam broken stone, performing ball milling for 4 hours, and screening by a 250-micrometer sieve to obtain a material A;
b. adding sodium hydroxy cellulose into a sulfuric acid solution at the temperature of 53 ℃, stirring for reaction for 55min, adjusting the pH value to 8, freeze-drying, taking out and placing into an acetone solution, ultrasonically dispersing for 30min, raising the temperature to 80 ℃, reacting at constant temperature for 10h under the nitrogen condition, adding N, N-carbonyl diimidazole, continuing stirring for reaction for 10h, adding epoxy chloropropane, washing with absolute ethyl alcohol, and freeze-drying to obtain a material B;
c. melting polyethylene at the temperature of 95 ℃, adding nickel nitrate and a material B, magnetically stirring for 40min, sequentially adding latex powder, purified water sludge and the material A, uniformly stirring, pouring into a mold, freezing and molding by using liquid nitrogen, drying in vacuum for 30h, sintering at the temperature of 1050 ℃ for 35h, preserving heat for 3.5h, and taking out to obtain a modified ceramic ball;
s4, preparing modified rubber:
a. waste rubber treatment: adding sodium hydroxide into waste rubber particles, stirring at the rotating speed of 900r/min for 2.5h, filtering and washing with tap water, adding tetraethoxysilane and absolute ethyl alcohol, continuously stirring for 1.8h, drying at the temperature of 75 ℃ for 6h, and shearing to obtain rubber particles;
b. modified rubber solution: setting the temperature to 98 ℃, sequentially adding rubber particles and chloroprene rubber at the rotating speed of 100r/min, stirring for reaction for 30min, adding carbon black, an anti-aging agent and an auxiliary agent A after uniform mixing, uniformly mixing, adding sulfur and an accelerator after reaction for 2h, and continuously stirring for complete reaction to obtain a modified rubber solution;
s5, synthesizing a modified rubber strip;
adding the modified ceramic balls and the modified microbeads into the modified rubber liquid, stirring uniformly, stirring at the rotating speed of 800r/min for 2 hours, standing for 12 hours, drawing into rubber strips, finally vulcanizing at 155 ℃ for 2.5 hours, taking out, and standing at room temperature for 26 hours to obtain the modified rubber strips;
s6, preparing concrete: and (3) feeding materials such as cement, sand stone, basalt fiber and the like into a stirrer, adding water, uniformly stirring, adding the modified rubber strips, and continuously uniformly stirring to obtain the high-temperature-resistant anti-cracking concrete mortar.
Example 8
S1, synthesizing a modified rubber strip;
adding common porous ceramic balls and common glass beads into chloroprene rubber liquid, uniformly stirring, stirring at the rotating speed of 800r/min for 2h, standing for 12h, drawing into rubber strips, finally vulcanizing at 155 ℃ for 2.5h, taking out, and standing at room temperature for 26h to obtain modified rubber strips;
s2, preparing concrete: and (3) feeding materials such as cement, sand stone, basalt fiber and the like into a stirrer, adding water, uniformly stirring, adding the modified rubber strips, and continuously uniformly stirring to obtain the high-temperature-resistant anti-cracking concrete mortar.
Examples 1-3 were run with only control variables, examples 4-8 were comparative examples, and the data for examples 4-8 were referenced to example 2; in the embodiment 4, the modified ceramic balls are added into the modified rubber to prepare modified rubber strips, and the modified rubber strips are mixed with cement, sand, a water reducing agent and basalt fibers to obtain a high-temperature-resistant anti-cracking concrete sample; in the embodiment 5, the modified microspheres are added into the modified rubber to prepare modified rubber strips, and the modified rubber strips are mixed with cement, sand, a water reducing agent and basalt fibers to obtain a high-temperature-resistant anti-cracking concrete sample; in the embodiment 6, the modified micro-beads and the modified ceramic balls are directly mixed with cement, sand, a water reducing agent and basalt fibers to obtain a high-temperature-resistant and anti-cracking concrete sample; the modified microspheres in example 7 are not wrapped by modified polypropylene, the modified microspheres and modified ceramic balls are directly added into modified rubber to prepare modified rubber strips, and the modified rubber strips are mixed with cement, sand, a water reducing agent and basalt fibers to obtain a high-temperature-resistant anti-cracking concrete sample; in the embodiment 8, common porous ceramic balls and common glass beads are added into chloroprene rubber to prepare modified rubber strips, and the modified rubber strips are mixed with cement, sand, a water reducing agent and basalt fibers to obtain a high-temperature-resistant and anti-cracking concrete sample; the concrete samples obtained in examples 1 to 8 were tested with the same controlled parameters and plotted.
Experiment: the concrete samples prepared in examples 1-8 were each placed in a cube mold, the cube mold was placed in standard laboratory air, a plastic film was applied over the cube mold to prevent water evaporation, cured for 24 hours, removed, and immersed in water for curing.
And (3) testing high-temperature resistance: after the concrete samples prepared in the examples 1 to 8 are subjected to standard curing for 28 days, the compressive strength, the bending strength and the chloride ion diffusion coefficient of the concrete samples are respectively tested, the samples are placed in a high-temperature furnace for 4 hours, the temperature is continuously increased to 900 ℃ and kept constant for 28 days, and the change of the concrete samples is observed.
And (3) testing the water permeability resistance: the test is carried out according to a step-by-step pressurization method in the standard GB/T50082 of test methods for durability and long-term performance of common concrete.
And (3) testing the chloride ion penetration resistance: the test is carried out according to an electric flux test method in the standard GB/T50082 of the test method for the durability and the long-term performance of the common concrete.
And (3) testing the radiation protection performance: the samples prepared in examples 1-8 were made into walls of 200mm thickness, with a 120Sv/h radiation source on one side of the wall, and the radiation was detected on the other side of the wall using a radiation detector.
Testing the sound absorption performance: the sound absorption coefficients of the concrete samples prepared in examples 1 to 8 were measured in accordance with GBJ47-1983 Specification for measuring sound absorption coefficient by the reverberant room method and GB/T16731-1997 Classification of sound absorption properties of building sound-absorbing products.
And (3) testing the heat conductivity coefficient: the method is carried out by the method specified in GB/T10294 and 2008 ' determination of the steady-state thermal resistance of the heat-insulating material and the related characteristics thereof ' heat-proof plate method '.
And (3) testing the heat transfer coefficient: the method is carried out by adopting the method specified in GB/T13475 + 2008 'determination and calibration of the steady-state thermal resistance of the heat-insulating material and the related characteristics thereof and the protection hot box method'.
The test results are shown in the following table:
Figure BDA0002629401910000171
Figure BDA0002629401910000181
according to the data in the table, the modified ceramic balls are added into the modified rubber to prepare the modified rubber strips in the embodiment 4, and the high-temperature-resistant and crack-resistant concrete sample obtained by mixing the modified rubber strips with cement, sand, a water reducing agent and basalt fibers has general compressive strength, poor heat insulation performance and corrosion resistance, and almost the rest performances are similar to those of the embodiments 1-3; in the embodiment 5, the modified microspheres are added into the modified rubber to prepare the modified rubber strip, and the modified rubber strip is mixed with cement, gravel, a water reducing agent and basalt fibers to obtain a high-temperature-resistant and anti-cracking concrete sample which has the advantages of common compressive strength and corrosion resistance, no high temperature resistance, insufficient heat preservation and heat insulation performance and excellent performance of other various performances; in example 6, the high-temperature-resistant and crack-resistant concrete sample obtained by directly mixing the modified microspheres and the modified ceramic balls with cement, gravel, a water reducing agent and basalt fibers has poor bending strength, general compressive strength and corrosion resistance, and good sound absorption effect and heat insulation effect; the modified microspheres in the example 7 are not wrapped by modified polypropylene, the modified microspheres and the modified ceramic balls are directly added into the modified rubber to prepare modified rubber strips, the compression strength of the high-temperature-resistant anti-cracking concrete sample obtained by mixing the modified rubber strips with cement, sand, a water reducing agent and basalt fibers is slightly lower than that of the concrete samples in the examples 1 to 3, and the performance performances of the rest of the concrete samples are excellent; in the example 8, the common porous ceramic balls and the common glass beads are added into the chloroprene rubber to prepare the modified rubber strips, and the modified rubber strips are mixed with cement, sand, a water reducing agent and basalt fibers to obtain the high-temperature-resistant and anti-cracking concrete sample, wherein the performances of the concrete sample are not ideal compared with those of the concrete samples in the examples 1 to 3.
From the above data and experiments, we can conclude that: according to the invention, the aerogel is adsorbed on the rough surface of the glass microspheres and is coated by the modified polypropylene layer, so that the problem of easy breakage of the aerogel is avoided, the direct contact between the glass microspheres is reduced, and the heat-insulating property is enhanced, wherein the radiation-proof substance is specially added, so that the radiation-proof property of concrete is enhanced; the modified ceramic prepared by using natural wastes such as sepiolite and the like as raw materials has very good heat preservation, heat insulation, corrosion resistance, noise reduction and high and low temperature resistance; the modified ceramic balls and the modified microbeads are effectively combined to prepare the modified rubber strips, the mechanical property and the elastic modulus of concrete can be effectively increased through the modified rubber strips, the modified rubber strips and substances such as cement are mixed together to prepare the concrete, and a prepared concrete sample has the advantages of good high-temperature and low-temperature resistance, excellent flame retardance, stronger hydrophobicity, difficulty in fracture and stronger practicability.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The high-temperature-resistant anti-cracking concrete is characterized in that: the raw material components are as follows: by weight, 100-300 parts of cement, 100-150 parts of sand, 300-600 parts of water, 250-450 parts of modified rubber strips, 100-200 parts of water reducing agent and 100-200 parts of basalt fibers.
2. The high temperature resistant and crack resistant concrete according to claim 1, wherein: the modified rubber strip comprises the following raw material components: 90-100 parts of assistant A, 70-80 parts of modified microspheres, 70-80 parts of modified ceramic balls and 80-90 parts of modified rubber.
3. The high temperature resistant and crack resistant concrete according to claim 2, wherein: the auxiliary agent A comprises the following raw material components: 30-50 parts of polycarbosilane, 20-30 parts of superfine magnesium hydroxide, 20-30 parts of superfine zinc oxide, 10-15 parts of stearic acid and 10-15 parts of triaryl phosphate.
4. The high temperature resistant and crack resistant concrete according to claim 2, wherein: the modified microbead comprises the following raw material components: 80-90 parts of aerogel, 60-80 parts of modified polypropylene, 40-60 parts of silane coupling agent and 30-50 parts of hydrofluoric acid in parts by weight.
5. The high temperature resistant and crack resistant concrete according to claim 2, wherein: the modified ceramic ball comprises the following raw material components: 30-50 parts of diatom ooze, 30-50 parts of calcium oxide, 30-50 parts of sea foam broken stone, 10-20 parts of sodium hydroxy cellulose, 10-20 parts of sulfuric acid, 30-40 parts of N, N-carbonyl diimidazole, 20-30 parts of epoxy chloropropane, 16-18 parts of pore-forming agent, 16-18 parts of catalyst, 20-30 parts of emulsion powder and 30-50 parts of purified water sludge.
6. The high temperature resistant and crack resistant concrete according to claim 2, wherein: the modified rubber comprises the following raw material components: by weight, 30-50 parts of waste rubber particles, 10-20 parts of sodium hydroxide, 10-20 parts of ethyl orthosilicate, 10-20 parts of absolute ethyl alcohol, 35-45 parts of chloroprene rubber, 15-25 parts of carbon black, 15-25 parts of anti-aging agent, 15-25 parts of auxiliary agent A, 20-24 parts of sulfur and 18-22 parts of accelerator.
7. The high temperature resistant and crack resistant concrete according to claim 4, wherein: the preparation of the modified polypropylene mainly comprises the following steps: melting polypropylene at the temperature of 175-195 ℃, adding a rare earth polypropylene beta nucleating agent, stirring and reacting for 30-40min at the temperature of 200-300r/min, adding an auxiliary agent A, nano iron ore and nano barite, and continuously stirring and reacting for 1-2h to obtain a modified polypropylene solution.
8. The high-temperature-resistant and crack-resistant concrete as claimed in claim 4, wherein the aerogel comprises, by weight, 20-30 parts of aluminum sec-butoxide, 20-30 parts of ethyl orthosilicate, 15-20 parts of hydrochloric acid, and 8-10 parts of glacial acetic acid.
9. The preparation method of the high-temperature-resistant anti-cracking concrete is characterized by comprising the following steps of:
s1, preparing an auxiliary agent A;
s2, preparing modified microbeads;
s3, preparing a modified ceramic ball;
s4, preparing modified rubber;
s5, synthesizing a modified rubber strip;
s6, preparing concrete.
10. The method for preparing the high-temperature-resistant and crack-resistant concrete according to claim 9, wherein the method comprises the following steps: the method specifically comprises the following steps:
s1, preparing an auxiliary agent A: adding polycarbosilane into xylene, stirring and dissolving, adding superfine magnesium hydroxide, superfine zinc oxide, stearic acid, absolute ethyl alcohol and triaryl phosphate, and stirring at a high speed of 100r/min for 3-8min by 800-;
s2, preparing modified microbeads;
a. soaking the glass beads in hydrofluoric acid for 45-75min to obtain beads A;
b. preparing aerogel: adding aluminum sec-butoxide into an ethanol solution at the temperature of 58-78 ℃, fully stirring and dissolving, cooling to room temperature, sequentially adding tetraethoxysilane and hydrochloric acid, stirring at the rotating speed of 100-;
c. adding the microbeads A into the aerogel liquid, stirring and reacting for 18-24h, taking out, standing and aging for 24-36h, washing with ethanol and drying to obtain microbeads B;
d. preparing modified polypropylene;
e. adding the microbeads B into a silane coupling agent at the temperature of 68-78 ℃, stirring and reacting for 6-8h at the rotation speed of 1300r/min of 1100-;
s3, preparing a modified ceramic ball:
a. uniformly mixing the diatom ooze, the calcium oxide and the sea foam broken stone, performing ball milling for 2-4h, and sieving through a 150-fold sieve of 250 mu m to obtain a material A;
b. adding sodium hydroxy cellulose into a sulfuric acid solution at the temperature of 43-53 ℃, stirring for reaction for 35-55min, adjusting the pH value to 6-8, freeze-drying, taking out and placing into an acetone solution, ultrasonically dispersing for 20-30min, raising the temperature to 70-80 ℃, reacting for 6-10h at constant temperature under the condition of nitrogen, adding N, N-carbonyldiimidazole, continuously stirring for reaction for 6-10h, adding epichlorohydrin, washing with absolute ethyl alcohol, and freeze-drying to obtain a material B;
c. melting polyethylene at the temperature of 88-95 ℃, adding nickel nitrate and a material B, magnetically stirring for 20-40min, sequentially adding latex powder, purified water sludge and the material A, uniformly stirring, pouring into a mold, freezing and molding by using liquid nitrogen, vacuum drying for 20-30h, sintering at the temperature of 850-1050 ℃ for 25-35h, preserving heat for 2.5-3.5h, and taking out to obtain a modified ceramic ball;
s4, preparing modified rubber:
a. waste rubber treatment: adding sodium hydroxide into the waste rubber particles, stirring at the rotating speed of 900r/min for 1.5-2.5h at 700-;
b. preparing modified rubber: setting the temperature to be 78-98 ℃, sequentially adding rubber particles and chloroprene rubber under the condition of a rotating speed of 80-100r/min, stirring and reacting for 20-30min, adding carbon black, an anti-aging agent and an auxiliary agent A after uniform mixing, uniformly mixing, reacting for 1-2h, adding sulfur and an accelerator, and continuously stirring and reacting completely to obtain a modified rubber solution;
s5, synthesizing a modified rubber strip;
adding the modified ceramic balls and the modified microbeads into the modified rubber solution, uniformly stirring and mixing, stirring at the rotating speed of 800r/min for 1-2h, standing for 8-12h, drawing into rubber strips, finally vulcanizing at 155 ℃ for 1.5-2.5h, taking out, and standing for 20-26h at room temperature to obtain the modified rubber strips;
s6, preparing concrete: and (3) feeding materials such as cement, sand stone, basalt fiber and the like into a stirrer, adding water, uniformly stirring, adding the modified rubber strips, and continuously uniformly stirring to obtain the high-temperature-resistant anti-cracking concrete mortar.
CN202010806707.7A 2020-08-12 2020-08-12 High-temperature-resistant anti-cracking concrete and preparation method thereof Pending CN111925160A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010806707.7A CN111925160A (en) 2020-08-12 2020-08-12 High-temperature-resistant anti-cracking concrete and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010806707.7A CN111925160A (en) 2020-08-12 2020-08-12 High-temperature-resistant anti-cracking concrete and preparation method thereof

Publications (1)

Publication Number Publication Date
CN111925160A true CN111925160A (en) 2020-11-13

Family

ID=73311226

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010806707.7A Pending CN111925160A (en) 2020-08-12 2020-08-12 High-temperature-resistant anti-cracking concrete and preparation method thereof

Country Status (1)

Country Link
CN (1) CN111925160A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112592133A (en) * 2020-12-24 2021-04-02 泰安市同达建材有限公司 Flexible early-strength concrete and preparation method thereof
CN113121174A (en) * 2021-04-25 2021-07-16 南通市国石商品混凝土有限公司 High-temperature-resistant flame-retardant explosion-proof high-strength concrete and preparation method thereof
CN113582596A (en) * 2021-08-16 2021-11-02 陈肖飞 Heat-insulating cement mortar and processing method thereof
CN115819042A (en) * 2022-12-09 2023-03-21 杭州瑞鼎建材有限公司 Modified high-strength concrete and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102557555A (en) * 2011-12-28 2012-07-11 河南大学 Mineral fiber-modified flexible rubber concrete
CN103865113A (en) * 2012-12-18 2014-06-18 曾祥菊 Anti-ageing rubber promoter
CN106082823A (en) * 2016-06-20 2016-11-09 安徽金丰新型建材有限公司 A kind of modified asphalt concrete

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102557555A (en) * 2011-12-28 2012-07-11 河南大学 Mineral fiber-modified flexible rubber concrete
CN103865113A (en) * 2012-12-18 2014-06-18 曾祥菊 Anti-ageing rubber promoter
CN106082823A (en) * 2016-06-20 2016-11-09 安徽金丰新型建材有限公司 A kind of modified asphalt concrete

Non-Patent Citations (9)

* Cited by examiner, † Cited by third party
Title
巩桂芬等: ""纳米纤维素接枝环氧基的制备与表征"", 《高分子材料科学与工程》 *
张俊: ""海泡石多孔陶瓷的制备、表面改性及其油水分离性能研究"", 《中国优秀硕士学位论文全文数据库工程科技I辑》 *
张海波编著: "《废旧橡胶水泥混凝土界面与性能》", 30 September 2018, 冶金工业出版社 *
张立飞等: ""聚碳硅烷改性氢氧化镁对PP复合材料阻燃性能的影响"", 《功能材料》 *
李月光等: ""ZnO超疏水表面材料用于路面抗凝冰技术性能研究"", 《武汉理工大学学报（交通科学与工程版）》 *
柴春鹏等编著: "《高分子合成材料学》", 31 January 2019, 北京理工大学出版社 *
汪俊等: ""界面自组装在聚丙烯基体内构筑绒球状玻璃微珠"", 《塑料工业》 *
王文琴等: ""耐高温硅-铝复合气凝胶的制备和表征"", 《稀有金属材料与工程》 *
陈伟等: ""废橡胶颗粒联合改性用于制备水泥砂浆机理研究"", 《硅酸盐通报》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112592133A (en) * 2020-12-24 2021-04-02 泰安市同达建材有限公司 Flexible early-strength concrete and preparation method thereof
CN113121174A (en) * 2021-04-25 2021-07-16 南通市国石商品混凝土有限公司 High-temperature-resistant flame-retardant explosion-proof high-strength concrete and preparation method thereof
CN113582596A (en) * 2021-08-16 2021-11-02 陈肖飞 Heat-insulating cement mortar and processing method thereof
CN115819042A (en) * 2022-12-09 2023-03-21 杭州瑞鼎建材有限公司 Modified high-strength concrete and preparation method thereof
CN115819042B (en) * 2022-12-09 2023-10-03 杭州瑞鼎建材有限公司 Modified high-strength concrete and preparation method thereof

Similar Documents

Publication Publication Date Title
CN111925160A (en) High-temperature-resistant anti-cracking concrete and preparation method thereof
Adhikary et al. Aerogel based thermal insulating cementitious composites: A review
Abdullah et al. Use of fly-ash geopolymer incorporating ground granulated slag for stabilisation of kaolin clay cured at ambient temperature
CN108641361B (en) Fiber-reinforced organic silicon aerogel heat-insulation composite material and preparation method thereof
CN111039624A (en) Recycled concrete and preparation method thereof
Peng et al. Facile preparation for gelatin/hydroxyethyl cellulose‐SiO2 composite aerogel with good mechanical strength, heat insulation, and water resistance
CN114105561B (en) Recycled concrete based on inorganic fibers and preparation method thereof
CN111056794B (en) Ecological nano photocatalytic recycled concrete and preparation method thereof
CN110563368A (en) concrete recycled aggregate and preparation process thereof
Ren et al. Constructing a novel nano-TiO2/Epoxy resin composite and its application in alkali-activated slag/fly ash pastes
CN108640628B (en) Haematitum zeolite perlite phase change intelligent board
CN108249943B (en) Preparation method of waterproof aerogel material
Jia et al. Applications of aerogel in cement-based thermal insulation materials: an overview
Chang et al. Effect of silicate modulus on tensile properties and microstructure of waterproof coating based on polymer and sodium silicate-activated GGBS
Sakr et al. Effect of coatings on concrete resistance to physical salt attack
Zhong et al. Self-assembly of zinc hydroxystannate on polyethyleneimine supported boron nitride to improve the flame protection properties of waterborne epoxy coatings
CN112390597B (en) Preparation method of composite plant fiber cement board
CN113480270A (en) Lightweight aggregate concrete and preparation method thereof
CN111116116B (en) Compression-resistant carbonization-resistant recycled concrete and preparation method thereof
El-Seidy et al. Alkali activated materials with recycled unplasticised polyvinyl chloride aggregates for sand replacement
CN115340322B (en) Shell powder-based light sound insulation exterior wall coating and preparation method thereof
Xue et al. Effects of inorganic‐organic surface modification on the mechanical and thermal properties of poly (vinyl chloride) composites reinforced with fly‐ash
Yue et al. Hydrothermal synthesis of an expanded perlite based lightweight composite for indoor humidity regulating
Gong et al. Laboratory research on composite tunnel fire-retardant coating
Sugama et al. Toughness improvement of geothermal well cement at up to 300 C: using carbon Microfiber

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination