CN114773085A - Novel foamed concrete, foamed concrete prefabricated part and preparation method of light filling cast-in-place wall - Google Patents

Novel foamed concrete, foamed concrete prefabricated part and preparation method of light filling cast-in-place wall Download PDF

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Publication number
CN114773085A
CN114773085A CN202210419819.6A CN202210419819A CN114773085A CN 114773085 A CN114773085 A CN 114773085A CN 202210419819 A CN202210419819 A CN 202210419819A CN 114773085 A CN114773085 A CN 114773085A
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parts
grade
concrete
mixture
foamed concrete
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何明山
范英海
宋世锋
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Hubei Fengluan New Material Technology Co ltd
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Hubei Fengluan New Material Technology Co ltd
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    • 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
    • C04B28/02—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 containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • 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
    • C04B2111/40—Porous or 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/52—Sound-insulating 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
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G2017/008—Pin and hole connection type

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses novel foamed concrete which comprises the following components in parts by weight: 350 parts of cement-150-grade sand-broken materials, 700 parts of 400-grade 800-grade pumice-150-grade sand-broken materials, 700 parts of furnace slag-150-grade sand-broken materials, 700 parts of 400-grade 800-grade industrial manganese steel slag-150-grade sand-broken materials, 350 parts of phosphogypsum-150-grade sand-broken materials, 700 parts of 400-grade sand-broken materials and industrial fired product waste residues, 0.1-0.4 part of animal protein high-molecular foaming agent, 3-12 parts of admixture and 200 parts of water-120-grade sand-broken materials. The invention has the characteristics of environmental protection and low production cost. The technical scheme is simple in process, simple to operate, high in practicability, high in construction efficiency and low in production cost, and meanwhile, the shaping plastic formwork can be recycled, so that the waste of building tools and the random discarding of building materials are avoided, the energy is saved, the environment is protected, the production cost is reduced, and the economic benefit is good.

Description

Novel foamed concrete, foamed concrete prefabricated part and preparation method of light filling cast-in-place wall
Technical Field
The invention relates to the technical field of non-load-bearing lightweight concrete, in particular to novel foamed concrete, a foamed concrete prefabricated part and a preparation method of a lightweight filling cast-in-place wall body.
Background
The recovery and treatment of solid wastes has been a difficult problem in the industry, and serious pollution is caused to the ecological environment. The phosphogypsum is a common inorganic material, namely limestone or quick lime water, and is widely applied to the fields of home decoration and the like. With the progress and development of social household life, the updating iteration is rapid. The invention effectively organizes the waste materials together to develop the novel light-weight foam concrete. The non-degradable or degradable and difficult-to-recycle waste is recycled, the environmental pollution is improved, and the waste is changed into renewable resources, so that the energy is saved and the environment is protected. The novel light foam concrete has the characteristics of high performance, high strength, light weight, heat preservation, heat insulation, sound insulation, high elastic modulus, strong shock resistance and the like. The application fields are wider, such as municipal works, roads and bridges, civil buildings, highway backfill, roof heat preservation, non-bearing cast-in-situ wall bodies, internal and external walls and the like.
In the aspect of building non-bearing walls in China, gas bricks are mostly used for building construction processes, more than twenty years of history exist, and the traditional building wall has many problems, such as settlement cracks, hollowing of a plaster layer, water leakage, easy oxidation and shedding and other common quality problems, the actual service life of the gas bricks cannot be consistent with the design service life of a main structure, and many potential safety hazards and a series of social problems exist. The traditional building process flow is too complicated, links are multiple, the labor intensity is high, the building gas block bricks are damaged, plastering mortar is wasted, construction waste is too much, the construction waste cannot be recycled in time, the ecological environment is seriously damaged by landfill of waste, the construction labor intensity is high, the new-era young people are not willing to carry out the industry work, the current situation in China is that the labor of clay craftsmen is too much, and the problem that the old fault and the yellow of the clay craftsmen cannot be delayed is solved.
The lightweight concrete is concrete using lightweight aggregate, and has a density of not more than 1900kg/m3. The lightweight concrete has the characteristics of heat preservation and fire resistance and good deformability. The existing lightweight concrete has the problems of difficult concrete construction and inconvenient operation, a large amount of manpower is utilized according to the traditional method during construction, the old construction process is adopted, and in addition, the labor workers in China are aged, and young newborns are often unwilling to enter the field of building labor, so that the construction efficiency is lower, and the production cost is higher.
Disclosure of Invention
An object of the present invention is to provide a novel foamed concrete to solve the problems of the background art.
The invention provides the following technical scheme: the novel foaming concrete comprises the following components in parts by weight: 150-350 parts of cement, 150-700 parts of 400-grade 800 pumice, 150-700 parts of slag, 150-700 parts of 400-grade 800 industrial manganese steel slag, 150-350 parts of phosphogypsum, 150-700 parts of 400-grade 800-grade ceramsite and industrial burned product waste residue, 0.1-0.4 part of animal protein polymer foaming agent, 3-12 parts of admixture and 200 parts of water.
Preferably, the cement is P.O ordinary portland cement.
Cement: the powdered hydraulic inorganic cementing material is added with water and stirred to form slurry. The foaming concrete can be hardened in the air or in water, powdery materials such as pumice, ceramsite, manganese steel slag and the like and aggregate industrial solid wastes and the like can be firmly cemented together according to a proportion to prepare a concrete wet material, and then the concrete wet material is foamed by a foaming agent and is doped into the concrete wet material to be uniformly stirred so as to prepare the foaming concrete.
Preferably, the industrial fired product waste residue comprises one of clay, shale and limestone.
Preferably, the foaming agent is sodium lauryl sulfate.
The animal protein polymer foaming agent has good uniformity and stability, and the foamed foam is not communicated with the foam, so that the pores of the prepared foamed concrete are not communicated with each other. The product has good anti-permeability performance and better sound insulation and heat preservation functions than other foaming agents. The sodium carboxymethyl cellulose is an ionic cellulose gum, has hygroscopicity, and can be easily dispersed in water to form a transparent colloidal solution. The sodium carboxymethylcellulose can be used as a colloidal tackifier for thickening and emulsifying, and is matched with cement to increase the adhesion of each component of the concrete, so that the hardness and toughness of the concrete are enhanced, the compressive strength of the concrete is improved, and the impermeability of the concrete is improved. Meanwhile, molecular acting force is easily formed between the sodium carboxymethylcellulose and the polyurethane, so that the firmness of the concrete is enhanced, the anti-cracking effect of the concrete is improved, the service life of the concrete is prolonged, the stability of the phosphogypsum is improved, the high-temperature resistance and the ageing resistance of the phosphogypsum are improved, and the ageing resistance and the corrosion resistance of the concrete are improved. The sodium carboxymethylcellulose has the characteristics of no odor and no taste, and is stable in chemical property, high in safety, environment-friendly and free of adverse effect on human health. Alkylphenol polyoxyethylene is an important polyoxyethylene type nonionic surfactant, has the characteristics of stable property, acid and alkali resistance, low cost and the like, can increase the dispersion of each component of concrete in the stirring process, has good dispersion performance, prevents the mutual aggregation of particles of each component of the concrete, improves the uniform distribution of each component of the concrete, makes the concrete uniform in quality and further improves the quality of the concrete. In addition, the alkylphenol ethoxylates is a polyoxyethylene type polymer, so that intermolecular acting force is easily formed with the phosphogypsum, the toughness of the concrete is improved, and the impact resistance and the compressive strength of the concrete are improved. The silicone amide has a foam stabilizing function, can improve the viscosity of concrete slurry, has strong dispersibility, can uniformly disperse solid particles in the concrete and uniformly distribute air holes, can improve the air hole structure, reduce the holes, improve the strength and the heat preservation effect of the concrete, reduce the probability of die collapse, and can reduce the material consumption.
Preferably, the admixture is a high-new-energy water-reducing reinforcing agent.
Preferably, the admixture is a polycarboxylic acid water reducing agent.
The polycarboxylate superplasticizer has high water reducing rate, small slump loss, sensitivity to water consumption and obvious effect of improving the concrete strength. Retarding component polyol and derivatives thereof: polyols, amine derivatives, celluloses; the slow setting effect is stable, the stability is good when the temperature changes, and the mixing amount is 0.05-0.2%. The water retention component and the water retention agent have the function of increasing the viscosity of the concrete mixture, so that the concrete does not bleed and separate under the conditions of large water-cement ratio and large slump. The early strength component sulfate is the most widely used early strength agent, wherein the dosage of sodium sulfate is the largest, and the dosage is generally 1-3%, and is preferably 1.5%.
The industrial solid wastes in the raw materials of the foamed concrete, such as phosphogypsum, pumice and manganese steel slag, can be used for processing and preparing the foamed concrete only by simple physical crushing treatment. The industrial solid wastes are phosphogypsum, pumice and manganese steel slag, which are only simply physically crushed, the process is simple, no chemical reagent is used, and the pollution is small. The industrial solid waste is added with the phosphogypsum, pumice and manganese steel slag particles, and because the densities of the phosphogypsum, pumice and manganese steel slag particles are lighter, the density of concrete is reduced, the problem that the building solid waste and the industrial solid waste are difficult to treat is solved, the industrial solid waste is harmlessly treated by the phosphogypsum waste, namely, the environmental pollution is effectively reduced, the ecological balance is protected, the utilization effect of the industrial solid waste manganese steel slag is realized, a new use way is found for the industrial solid waste, the production cost is reduced, and the environment is protected.
The addition of the industrial solid waste phosphogypsum, the slag, the pumice, the manganese steel slag particles and the powder can not only increase the heat preservation effect of the foamed concrete, but also enhance the compressive strength of the foamed concrete and improve the quality of the foamed concrete while reducing the density of the foamed concrete.
In the technical scheme, stone powder is effectively utilized, the production cost is low, and the environment is friendly. Because the density of the materials in the technical scheme is relatively close, the finished product of the foamed concrete mixture prepared according to a certain proportion has uniform texture, and is not easy to generate drum control and cracks. Under the same volume, the foaming agent is properly added to reduce the density of the foamed concrete, uniform gaps are formed inside the foamed concrete, the foamed concrete is not easy to crack, shrink and settle, the density is uniform, the weight of the foamed concrete is reduced, the load of a building is reduced, the service life is prolonged, and the foamed concrete has the characteristics of heat preservation, heat insulation, low heat conductivity and good sound insulation effect.
Because the density of the phosphogypsum is low, the density of the foamed concrete aggregate is reduced by adding the phosphogypsum, so that the density of the foamed concrete is reduced, the phosphogypsum is recycled, and the phosphogypsum is green, energy-saving and low in production cost.
By adding the slag, the recycling of the industrial waste slag is realized, the reutilization and reasonable use of the waste slag resources are realized, the production cost is lower, the environment is protected, the energy is saved, and meanwhile, the strength of the foamed concrete is increased by the slag.
The industrial waste pumice has the advantages that the quantity of industrial waste pumice is large, the industrial waste pumice is difficult to treat, the technical scheme realizes the recycling of the building waste brick residues, not only realizes the utilization of resources and saves energy, but also reduces the production cost, and the design is reasonable and the economic benefit is good. Meanwhile, the construction waste brick slag can be simply physically crushed without adopting a chemical treatment mode, the process is simple, no chemical reagent is used, and the pollution is small.
The industrial solid waste manganese steel slag is a green and pollution-free renewable resource, has light texture, high toughness, a porous structure inside and a good heat preservation effect, and the addition of the pumice, the manganese steel slag, the ceramsite and the slag not only reduces the density of the foamed concrete, but also increases the compressive strength and the elongation at break of the foamed concrete and enhances the toughness of the foamed concrete due to the structure of the small-particle aggregate, so that the compressive strength, the seismic resistance and the heat preservation performance of the foamed concrete are improved, and meanwhile, the ageing resistance of the slag, the building solid waste and the industrial solid waste is improved, so that the ageing resistance of the foamed concrete is improved. The slag, the building solid waste and the industrial solid waste are convenient to obtain, renewable, low in cost, wide in resource, free of pollution and radioactivity, free of formaldehyde and good in environmental protection performance. The foamed concrete has stronger toughness, and the toughness and the strength of the foamed concrete are better enhanced on the premise of ensuring the light weight of the foamed concrete.
The other purpose of the invention is to provide a foamed concrete prefabricated part, which is made of the foamed concrete.
The invention further aims to provide novel foamed concrete for preparing a light filling cast-in-place wall.
Further, the preparation method of the lightweight filling cast-in-place wall body comprises the following steps:
s1, selecting the raw materials in the ratio of the foaming agent in the claim 1, adding the raw materials in other ratios into a stirrer, and uniformly stirring to obtain a mixture;
s2, after uniformly stirring, putting the mixture into a stirring and transporting vehicle, transporting the mixture to a construction site for pouring;
s3, assembling and shaping the mould according to the working condition by using the shaping template or the metal frame, wood, plastic and panel mould which can be used repeatedly, and reinforcing the shaping mould by using the pin;
and S4, adding a foaming agent into the mixture, avoiding vibration, and pouring the foamed mixture into a previously erected mold through a conveying pump for molding.
Compared with the prior art, the invention has the advantages that:
1. the addition of the industrial solid waste manganese steel slag, the phosphogypsum, the pumice and the slag particles not only reduces the density of concrete, but also solves the problem that the solid waste particles are difficult to treat, realizes the harmless treatment of the industrial solid waste phosphogypsum, the pumice, the slag particles and other wastes, namely effectively reduces the environmental pollution, protects the ecological balance, realizes the utilization effect of the industrial solid waste phosphogypsum, the manganese steel slag, the pumice and the slag, finds a new use way for the industrial solid waste phosphogypsum, the pumice and the slag particles, reduces the production cost, and is green and environment-friendly. Meanwhile, as the density of each raw material of the foam concrete is relatively close, the foam concrete has uniform texture, is not easy to bulge and crack, forms uniform gaps in size in the concrete, and has the advantages of heat preservation, heat insulation, low heat conductivity coefficient and better sound insulation effect.
2. The addition of the slag, the manganese steel slag, the ceramsite, the pumice, the phosphogypsum and the like not only enhances the performance of the concrete, but also realizes the reutilization of waste resources, is green and energy-saving, and has lower production cost.
3. The particles such as slag, pumice, ceramsite, industrial solid waste manganese steel slag and the like can effectively prevent the concrete from generating cracks due to plastic shrinkage, dry shrinkage and temperature change, simultaneously enhance the impermeability and impact resistance of the concrete, improve the toughness of the concrete, simultaneously enhance the ageing resistance of the concrete, prolong the service life of the foam concrete and enhance the compressive strength of the concrete. The additive enhances the hardness and toughness of the concrete, improves the compressive strength of the concrete, improves the impermeability of the concrete, improves the crack resistance of the concrete, and improves the ageing resistance and corrosion resistance of the concrete.
4. The technical scheme is simple in process, simple to operate, high in practicability, high in construction efficiency and low in production cost, meanwhile, the shaping plastic template can be recycled, waste of building tools and random discarding of building materials are avoided, energy is saved, environment is protected, production cost is reduced, and economic benefits are good.
Detailed Description
In the embodiments, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of a light filling cast-in-place wall body comprises the following steps:
s1, adding 250 parts of cement, 600 parts of slag, 10 parts of additive and 120 parts of water into a stirrer by mass, and uniformly stirring to obtain a mixture;
s2, after stirring uniformly, putting the mixture into a stirring and transporting vehicle and transporting the mixture to a construction site for pouring;
s3, assembling and shaping the mould by using the recyclable shaping plastic template according to the working condition, and reinforcing the shaping mould by using pins;
and S4, adding 0.1 part of foaming agent by weight into the mixture, avoiding vibration, and pouring the foamed mixture into a previously erected mold through a conveying pump for molding. Wherein the foaming agent is sodium dodecyl sulfate.
Example 2
A preparation method of a lightweight filling cast-in-place wall body comprises the following steps:
s1, adding 200 parts by mass of cement, 500 parts by mass of pumice, 12 parts by mass of an additive, 130 parts by mass of water and 200 parts by mass of phosphogypsum into a stirrer, and uniformly stirring to obtain a mixture;
s2, after uniformly stirring, putting the mixture into a stirring and transporting vehicle, transporting the mixture to a construction site for pouring;
s3, assembling and shaping the mould by using the recyclable shaping plastic template according to the working condition, and reinforcing the shaping mould by using pins;
and S4, adding 0.25 part by weight of foaming agent into the mixture, avoiding vibration, and pouring the foamed mixture into a previously erected mold through a conveying pump for molding. Wherein the foaming agent is sodium dodecyl sulfate.
Example 3
A preparation method of a light filling cast-in-place wall body comprises the following steps:
s1, adding 200 parts by mass of cement, 10 parts by mass of an additive, 500 parts by mass of ceramsite, 130 parts by mass of water, 200 parts by mass of phosphogypsum and 100 parts by mass of slag into a stirrer, and uniformly stirring to obtain a mixture;
s2, after uniformly stirring, putting the mixture into a stirring and transporting vehicle, transporting the mixture to a construction site for pouring;
s3, assembling and shaping the flow-processed mould by using the recyclable shaping plastic template according to the working condition, and reinforcing the shaping mould by using pins;
and S4, adding 0.2 part of foaming agent by weight into the mixture, avoiding vibration, and pouring the foamed mixture into a previously erected mold through a conveying pump for molding. Wherein the foaming agent is sodium dodecyl sulfate.
Example 4
A preparation method of a light filling cast-in-place wall body comprises the following steps:
s1, adding 200 parts by mass of cement, 500 parts by mass of manganese steel slag, 8 parts by mass of additive, 130 parts by mass of water, 200 parts by mass of phosphogypsum and 100 parts by mass of slag into a stirrer, and uniformly stirring to obtain a mixture.
S2, after stirring uniformly, putting the mixture into a stirring and transporting vehicle and transporting the mixture to a construction site for pouring;
s3, assembling and shaping the mould by using the recyclable shaping plastic template according to the working condition, and reinforcing the shaping mould by using pins;
and S4, adding 0.25 part by weight of foaming agent into the mixture, avoiding vibration, and pouring the foamed mixture into a previously erected mold through a conveying pump for molding. Wherein the foaming agent is sodium dodecyl sulfate.
Example 5
A preparation method of a light filling cast-in-place wall body comprises the following steps:
s1, adding 200 parts by mass of cement, 300 parts by mass of phosphogypsum, 8 parts by mass of additive, 120 parts by mass of water and 400 parts by mass of slag into a stirrer, and uniformly stirring to obtain a mixture;
s2, after uniformly stirring, putting the mixture into a stirring and transporting vehicle, transporting the mixture to a construction site for pouring;
s3, assembling and shaping the flow-processed mould by using the recyclable shaping plastic template according to the working condition, and reinforcing the shaping mould by using pins;
and S4, adding 0.3 part of foaming agent by weight into the mixture, avoiding vibration, and pouring the foamed mixture into a previously erected mold through a conveying pump for molding. Wherein the foaming agent is sodium dodecyl sulfate.
Example 6
A preparation method of a lightweight filling cast-in-place wall body comprises the following steps:
s1, adding 200 parts by mass of cement, 600 parts by mass of manganese steel slag, 10 parts by mass of additive, 120 parts by mass of water and 200 parts by mass of phosphogypsum into a stirrer, and uniformly stirring to obtain a mixture;
s2, after uniformly stirring, putting the mixture into a stirring and transporting vehicle, transporting the mixture to a construction site for pouring;
s3, assembling and shaping the mould by using the recyclable shaping plastic template according to the working condition, and reinforcing the shaping mould by using pins;
and S4, adding 0.3 part of foaming agent by weight into the mixture, avoiding vibration, and pouring the foamed mixture into a previously erected mold through a conveying pump for molding. Wherein the foaming agent is sodium dodecyl sulfate.
Example 7
A preparation method of a light filling cast-in-place wall body comprises the following steps:
s1, adding 200 parts by mass of cement, 600 parts by mass of pumice, 8 parts by mass of an additive, 140 parts by mass of water and 200 parts by mass of phosphogypsum into a stirrer, and uniformly stirring to obtain a mixture;
s2, after uniformly stirring, putting the mixture into a stirring and transporting vehicle, transporting the mixture to a construction site for pouring;
s3, assembling and shaping the flow-processed mould by using the recyclable shaping plastic template according to the working condition, and reinforcing the shaping mould by using pins;
and S4, adding 0.3 part of foaming agent by weight into the mixture, avoiding vibration, and pouring the foamed mixture into a previously erected mold through a conveying pump for molding. Wherein the foaming agent is sodium dodecyl sulfate.
Example 8
A preparation method of a lightweight filling cast-in-place wall body comprises the following steps:
s1, adding 200 parts by mass of cement, 600 parts by mass of ceramsite, 12 parts by mass of additive, 150 parts by mass of water and 200 parts by mass of phosphogypsum into a stirrer, and uniformly stirring to obtain a mixture;
s2, after uniformly stirring, putting the mixture into a stirring and transporting vehicle, transporting the mixture to a construction site for pouring;
s3, assembling and shaping the mould by using the recyclable shaping plastic template according to the working condition, and reinforcing the shaping mould by using pins;
and S4, adding 0.3 part of foaming agent by weight into the mixture, avoiding vibration, and pouring the foamed mixture into a previously erected mold through a conveying pump for molding. Wherein the foaming agent is sodium dodecyl sulfate.
Content of the experiment
Taking the concrete prefabricated members prepared in the examples 1-8, 8 parts of the concrete prefabricated members are prepared in each example, and the concrete prefabricated members are respectively subjected to performance tests: the dry density (kg/m) of the concrete was measured according to JG/T266-20113) JG/T266-2011 measures the compressive strength (MPa) of concrete, GB/T10294-2008 measures the thermal conductivity (W/(m.K)) of concrete, GB6566-2010 measures the radioactivity of concrete: an internal irradiation index IRa, an external irradiation index I γ; GB/T5464-2010 tests the combustion performance of the concrete: furnace temperature (. degree. C.); a duration of combustion(s); mass loss (%); total Heat value (MJ/kg), data for each set of examples was recorded, then the maximum and minimum values were discarded, and the remaining values were averaged and recorded.
Characterization of product Properties
The results obtained for each set of experiments are reported in the following table:
example 1
Figure BDA0003607094810000101
Example 2
Figure BDA0003607094810000102
Example 3
Figure BDA0003607094810000103
Example 4
Figure BDA0003607094810000111
Example 5
Figure BDA0003607094810000112
Example 6
Figure BDA0003607094810000113
Example 7
Figure BDA0003607094810000114
Example 8
Figure BDA0003607094810000115
Figure BDA0003607094810000121
According to the data, the parameters (dry density, compressive strength and thermal conductivity) of the concrete tested by the embodiment all meet the standard requirements of JG/T266-2011, the radioactivity detection result all meets the limited requirement of A-class decorative materials in GB6566-2010, and the combustion performance parameters of the concrete all meet the standard requirement of A1 in GB 8624-2012.
The addition of the manganese steel slag, the ceramsite and the pumice lightens the density of concrete aggregate, so that the density of the concrete is reduced, the density of the concrete is further reduced, the light weight characteristic of the concrete is improved, the load of a building is reduced, and the service life is prolonged. The addition of the phosphogypsum not only increases the toughness of the concrete, but also increases the compressive strength of the concrete. The adhesion degree of each component of the concrete is increased, the anti-cracking effect of the concrete is improved, and the service life of the concrete is prolonged. The addition of the foaming agent not only improves the uniform distribution of each component of the concrete and makes the concrete homogeneous, but also can react with the acting force among molecules such as calcium hydroxide, building solid wastes and the like, thereby increasing the toughness of the concrete and improving the impact resistance and the compressive strength of the concrete. The generation of the bubbles not only increases the heat storage capacity of the concrete, can keep the indoor temperature appropriate, and improves the living suitability of people, so that the concrete has competitiveness in economic benefit.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. The novel foaming concrete is characterized by comprising the following components in parts by weight: 350 parts of cement-150-grade sand-broken materials, 700 parts of 400-grade 800-grade pumice-150-grade sand-broken materials, 700 parts of furnace slag-150-grade sand-broken materials, 700 parts of 400-grade 800-grade industrial manganese steel slag-150-grade sand-broken materials, 350 parts of phosphogypsum-150-grade sand-broken materials, 700 parts of 400-grade sand-broken materials and industrial fired product waste residues, 0.1-0.4 part of animal protein high-molecular foaming agent, 3-12 parts of admixture and 200 parts of water-120-grade sand-broken materials.
2. The novel foam concrete according to claim 1, wherein: the cement is P.O ordinary portland cement.
3. The novel foamed concrete according to claim 1, wherein: the industrial fired product waste residue comprises one of clay, shale and calcareous stone.
4. The novel foam concrete according to claim 1, wherein: the foaming agent is sodium dodecyl sulfate.
5. The novel foamed concrete according to claim 1, wherein: the additive is a high-new-energy water-reducing reinforcing agent.
6. The novel foamed concrete according to claim 5, wherein: the additive is a polycarboxylic acid water reducing agent.
7. A foaming concrete prefabricated member is characterized in that: the foamed concrete preform is made using the foamed concrete according to any one of claims 1 to 6.
8. The use of the novel foamed concrete according to any one of claims 1 to 6 for the production of lightweight filled cast-in-place walls.
9. The application of claim 6, wherein the preparation method of the lightweight filling cast-in-place wall body comprises the following steps:
s1, selecting the raw materials in the ratio of the foaming agent in the claim 1, adding the raw materials in other ratios into a stirrer, and uniformly stirring to obtain a mixture;
s2, after uniformly stirring, putting the mixture into a stirring and transporting vehicle, transporting the mixture to a construction site for pouring;
s3, assembling and shaping the mould in a flow process by using a shaping template or a metal frame, wood, plastic and panel mould which can be recycled according to working conditions, and reinforcing the shaping mould by using pins;
and S4, adding a foaming agent into the mixture, avoiding vibration, and pouring the foamed mixture into a previously erected mold through a conveying pump for molding.
CN202210419819.6A 2022-04-21 2022-04-21 Novel foamed concrete, foamed concrete prefabricated part and preparation method of light filling cast-in-place wall Pending CN114773085A (en)

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CN110342887A (en) * 2019-08-07 2019-10-18 福建省兴岩建设集团有限公司 A kind of heat insulation sound-proof light foam concrete material and preparation method thereof
CN113831150A (en) * 2021-07-08 2021-12-24 湖北峰峦新材料科技有限公司 Novel foamed concrete, foamed concrete prefabricated part and preparation method of light filling cast-in-place wall

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CN106518153A (en) * 2016-10-31 2017-03-22 同济大学 Foamed concrete building block mainly prepared from phosphogypsum hydraulic composite binding material and preparation method thereof
CN110342887A (en) * 2019-08-07 2019-10-18 福建省兴岩建设集团有限公司 A kind of heat insulation sound-proof light foam concrete material and preparation method thereof
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Application publication date: 20220722