CN116283119A - Anti-cracking and anti-seepage concrete and preparation method thereof - Google Patents
Anti-cracking and anti-seepage concrete and preparation method thereof Download PDFInfo
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- 239000004567 concrete Substances 0.000 title claims abstract description 107
- 238000005336 cracking Methods 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 42
- 239000004568 cement Substances 0.000 claims abstract description 30
- 239000010881 fly ash Substances 0.000 claims abstract description 16
- 239000004576 sand Substances 0.000 claims description 14
- 238000010276 construction Methods 0.000 claims description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 8
- 239000011575 calcium Substances 0.000 claims description 8
- 229910052791 calcium Inorganic materials 0.000 claims description 8
- 239000000292 calcium oxide Substances 0.000 claims description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 239000011398 Portland cement Substances 0.000 claims description 4
- 229920001732 Lignosulfonate Polymers 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000007822 coupling agent Substances 0.000 abstract description 6
- 239000012744 reinforcing agent Substances 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003204 osmotic effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920002748 Basalt fiber Polymers 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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
- 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
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to anti-cracking and anti-seepage concrete and a preparation method thereof, wherein the anti-cracking and anti-seepage concrete comprises the following components in parts by weight: 300-360 parts of cement; 140-160 parts of water; 600-800 parts of fine aggregate; 900-1100 parts of coarse aggregate; 60-70 parts of fly ash; 9-10 parts of water reducer; 30-50 parts of an expanding agent; 0.6 to 1 portion of compacting agent. The anti-cracking and anti-seepage concrete adopts the components of cement, water, fine aggregate, coarse aggregate, fly ash, a water reducing agent, an expanding agent and a compacting agent, does not need to adopt a fibrous reinforcing agent or a coupling agent, only needs to adopt a small amount of compacting agent, has a simple preparation method, is convenient to operate, and can be widely popularized and applied; in addition, as the concrete is added with the materials such as the compacting agent, the expanding agent and the like, the cracking resistance and the impermeability of the concrete are improved, the long-term strength of the concrete is fully improved, and the durability of engineering is effectively improved.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to anti-cracking and anti-seepage concrete and a preparation method thereof.
Background
For marine construction, sea sand construction and saline-alkali area construction, coastal areas or surrounding environments contain a large amount of chloride ions and sulfate ions, so that corrosion effects on steel bars and concrete are easy to generate, the alkalinity of the concrete is reduced, passivation films on the surfaces of the steel bars are damaged, corrosion and expansion of the steel bars are caused, further cracking and peeling of a concrete protection layer are caused, the using function and mechanical property of the structure are continuously deteriorated, and meanwhile, the structure is subjected to high Wen Shaoyu and windy local climatic dry seasons; the weather influences such as wet rainy season reduce the durability of building, and the outer wall of building often appears fracture, infiltration, oozes white phenomenon, very influences outward appearance and the usability of building. Therefore, various measures are proposed by domestic and foreign specialists to improve the cracking resistance of the concrete structure.
In recent years, along with the development of national economy and the improvement of living standard, the materials used for the outer wall of a building are more and more various, but the phenomenon of water seepage of the outer wall is also more and more slowly. For this phenomenon, the engineering world analysis is not the same, and two main remarks are put together: one opinion considers the leakage phenomenon to be caused by the use of novel wall materials; one opinion is that the construction is not related to wall materials, and is mainly improper. Surface plastering is one of the very important items in the construction of building construction. In this process, if the raw materials are not standardized or if the worker is not technically closed or is not standardized in the construction process, the leakage phenomenon of the outer wall of the concrete plastering surface may occur. In addition, in the area of the exterior wall plaster, shrinkage of the plastered concrete and irregular operation which may occur at the time of construction may cause hollowing and even cracks to occur in the plastered part, which are factors causing leakage.
Particularly in coastal areas, seawater or air contains a large amount of corrosive molecules or ions, has serious corrosiveness to building walls and the like, and once the walls are cracked, the appearance is affected, so that the walls are water-permeable and the like. It is therefore necessary to develop a concrete which is itself resistant to cracking and to seepage and which has high strength.
The anti-seepage and anti-cracking concrete disclosed in Chinese patent No. CN108911625A adopts the following components in order to improve the connection strength inside the concrete and the anti-cracking performance of the concrete: cement, water, medium sand, broken stone, fly ash, mineral powder, a water reducing agent, an impervious agent, a reinforcing agent and a coupling agent, wherein the reinforcing agent is basalt fiber and carbon fiber, and the weight ratio of the basalt fiber to the carbon fiber is 1: (1.1-1.3); the compatibility of the fiber material and the concrete is improved by using the coupling agent, so that the preparation process is complex and the cost is high.
Therefore, the development of the concrete with low cost and crack resistance and impermeability is a technical problem to be solved in the industry.
Disclosure of Invention
The invention provides anti-cracking and anti-seepage concrete and a preparation method thereof, aiming at solving the technical problems of complex components and preparation process and high cost of the existing anti-seepage and anti-cracking concrete.
The technical scheme of the invention is as follows:
the anti-cracking and anti-seepage concrete is characterized by comprising the following components in parts by weight:
300-360 parts of cement;
140-160 parts of water;
600-800 parts of fine aggregate;
900-1100 parts of coarse aggregate;
60-70 parts of fly ash;
9-10 parts of water reducer;
30-50 parts of an expanding agent;
0.6 to 1 portion of compacting agent.
The invention according to the above-mentioned scheme is characterized in that the cement is Portland cement.
Further, the cement is 42.5R cement.
The invention according to the scheme is characterized in that the fine aggregate is river sand, and the fineness modulus is 2.7-2.9; the coarse aggregate is crushed stone, and the grain size of the coarse aggregate is 5-25 mm.
Further, the fine aggregate is river sand with fineness modulus of 2.84, and the particle size of the coarse aggregate is 10 mm.
The present invention according to the above-described aspect is characterized in that the water reducing agent is at least one of a polycarboxylic acid water reducing agent, a naphthalene water reducing agent, and a lignosulfonate water reducing agent.
Further, the water reducer is a polycarboxylic acid water reducer.
Furthermore, the water reducer adopts BMQ-06 brand water reducer.
The present invention according to the above aspect is characterized in that the expanding agent is at least one of calcium sulfoaluminate, calcium sulfoaluminate-calcium oxide, and calcium oxide.
Further, the expanding agent is one of calcium sulfoaluminate.
Furthermore, the swelling agent is BMQ-KANA6 type swelling agent.
Further, the compacting agent is a waterproof compacting agent for impervious concrete.
The invention according to the above scheme is characterized in that the concrete consists of the following components in parts by weight: 330 parts of cement; 154 parts of water; 714 parts of fine aggregate; 1050 parts of coarse aggregate; 68 parts of fly ash; 9.5 parts of water reducer; 44 parts of an expanding agent; and 0.8 parts of a compacting agent.
The invention according to the above scheme is characterized in that the concrete consists of the following components in parts by weight: 359 parts of cement; 152 parts of water; 678 parts of fine aggregate; 1055 parts of coarse aggregate; 68 parts of fly ash; 10 parts of water reducer; 46 parts of an expanding agent; 0.85 parts of compacting agent.
The invention also provides a preparation method of the anti-cracking and anti-seepage concrete, which is used for preparing the anti-cracking and anti-seepage concrete according to any one of claims 1 to 9, and is characterized in that cement, river sand, an expanding agent and a compacting agent are sequentially added into a concrete mixer to be uniformly stirred, meanwhile, a water reducing agent is added into water for concrete mixing to be uniformly mixed, then, the mixed liquid of the water and the water reducing agent is added into the concrete mixer to be fully stirred for 1 to 3 minutes, and then, the concrete is taken out after construction, so that the anti-cracking and anti-seepage concrete is obtained.
The invention according to the scheme has the beneficial effects that:
the anti-cracking and anti-seepage concrete adopts the components of cement, water, fine aggregate, coarse aggregate, fly ash, a water reducing agent, an expanding agent and a compacting agent, does not need to adopt a fibrous reinforcing agent or a coupling agent, only needs to adopt a small amount of the compacting agent, has the components of 0.6-1, has a simple preparation method, is convenient to operate, and can be widely popularized and applied;
the compacting agent in the concrete component is easy to melt with water, the using effect is not affected even if the water reducer is doped, the compacting agent is uniformly distributed in the concrete after stirring and chemically reacts with cement hydration precipitate to generate crystals and gel, the volume shrinkage of the concrete is reduced, and the crack resistance of the concrete is improved;
the concrete component is doped with the compacting agent and the expanding agent, so that the impermeability is obviously improved, the shrinkage is reduced, the cracking is prevented, and the permeation of water molecules is effectively prevented, thereby improving the impermeability of the concrete;
the compacting agent adopted by the invention has the characteristic of low chloride ion content, has no corrosion to steel bars and no rust corrosion, and is more suitable for coastal areas;
therefore, the components and the dosage thereof adopted by the invention can effectively improve the crack resistance, the impermeability and the durability of the concrete and fully improve the long-term strength of the concrete.
Detailed Description
In order to better understand the objects, technical solutions and technical effects of the present invention, the present invention will be further explained with reference to examples. Meanwhile, it is stated that the embodiments described below are only for explaining the present invention and are not intended to limit the present invention.
The invention provides anti-cracking and anti-seepage concrete which comprises the following components in parts by weight:
300-360 parts of cement;
140-160 parts of water;
600-800 parts of fine aggregate;
900-1100 parts of coarse aggregate;
60-70 parts of fly ash;
9-10 parts of water reducer;
30-50 parts of an expanding agent;
0.6 to 1 portion of compacting agent.
In the embodiment, the new construction project of the Baoan Jiang Bi environmental protection technology innovation industrial park-industrial wastewater centralized treatment is supported, the concrete mixing proportion design is mainly carried out by selecting raw materials such as concrete cement, sand, a water reducing agent, an expanding agent, a compacting agent and the like, the compacting agent with certain components is added in the concrete mixing proportion, the concrete mixing proportion design is carried out, and the project is coastal in Guangdong, relatively near the sea side and is easily corroded by chloride ions, and the expanding agent and the compacting agent are added, so that the compacting agent is an active chemical substance consisting of alkali metal and complex compounds; the compacting agent is uniformly distributed in the concrete after stirring, and chemically reacts with cement hydration precipitate to generate crystals and gel, so that the volume shrinkage of the concrete is reduced, and the crack resistance of the concrete is improved; the compacting agent and the expanding agent obviously improve the impermeability, reduce shrinkage and prevent cracking, and effectively prevent water molecules from penetrating, thereby improving the impermeability of the concrete; the compacting agent is low in chloride ion content, is more suitable for coastal areas, further meets the requirements of high crack resistance and impervious concrete performance of coastal area buildings, and solves the practical application problem of engineering.
The invention does not need to adopt a fiber-containing reinforcing agent or additionally use a coupling agent, the compacting agent is used as one of the additives, only a small amount of compacting agent is needed, and the compacting agent is easy to melt in water. The incoming detection report of the compacting agent can be seen in: concrete admixture detection report.
In the invention, the cement is ordinary Portland cement, specifically, 42.5R cement is adopted, the cement is hardened into concrete in air after being mixed with water, the compressive strength of the cement in 28 days is more than 42.5MPa, the hardness is very high, and the quick construction requirement is met. See: general Portland Cement detection report provided by Shenzhen Water service engineering detection Co.
In the invention, the fine aggregate is river sand, and the fineness modulus is 2.7-2.9; the coarse aggregate is crushed stone, and the grain size of the coarse aggregate is 5-25 mm. The fine aggregate is preferably river sand with fineness modulus of 2.84, and the grain size of the coarse aggregate is 10 mm. See: the Shenzhen water service engineering detection Limited company provides a sand detection report for common concrete and a pebble and broken stone detection report for common concrete.
In the invention, the fly ash is F-class fly ash, and is obtained by burning anthracite or bituminous coal, so that the strength of the hardened concrete can be improved, and the change of the volume of the hardened concrete can be reduced.
In the invention, the water reducer is at least one of a polycarboxylic acid water reducer, a naphthalene water reducer and a lignosulfonate water reducer, and in a preferred scheme, the water reducer is selected from the polycarboxylic acid water reducer, and BMQ-06 brand water reducer can be adopted. The water reducing agent has a dispersing effect on cement particles, can improve the workability, reduce the unit water consumption, and improve the fluidity of concrete mixtures (namely concrete mixtures in which stones, sand, cement and water are stirred together and not finally solidified).
In the invention, the expanding agent is at least one of calcium sulfoaluminate, calcium sulfoaluminate-calcium oxide and calcium oxide, and the expanding agent is compensating shrinkage concrete, thereby having the functions of compensating concrete shrinkage and compacting concrete and improving the impermeability of the concrete. In the preferred scheme, the expanding agent is one of calcium sulfoaluminate, BMQ-KANA6 type expanding agent can be adopted, sodium salt is not contained, and the alkali aggregate reaction of the concrete is not caused.
According to the concrete composition, experimental groups K1-K5 and control groups D1-D4 are designed according to different weight ratios, wherein the control groups lack a compacting agent or an expanding agent, such as:
table 1 contains the components and weight proportions thereof
According to the concrete, concrete waterproofing agent, JC474-2008 standard and the building concrete basic performance test method, JGJ/T70-2009 standard, the long-term performance, waterproof and impervious performance, crack resistance and other performances of the concrete with different proportions in the table 1 are detected, and the results are as follows:
table 2 comparison of concrete Properties of the groups
As can be seen from comparison of the experimental group and the control group, the components of the invention are added with the compacting agent and the expanding agent, so that the anti-permeability and the anti-cracking performance of the concrete are greatly improved.
Comparing test results of the concrete in the K1 group in the experimental groups K1 to K5: the 28d osmotic pressure is 0.8MPa, the 7-day compressive strength is 41.7MPa, and the 28-day compressive strength is 52.2MPa; test results for K2 group concrete: the 28d osmotic pressure is 0.6MPa, the 7-day compressive strength is 52.5MPa, and the 28-day compressive strength is 65.1MPa. It can be seen that at least one of the 28-day osmotic pressure and the 28-day compressive strength measured in the experimental groups shown in K1 and K2 is superior to the other groups, and therefore, the K1 group and the K2 group are more preferable weight ratios of the components in the present invention.
Specifically, in the K1 example, the concrete consisted of the following components in parts by weight: 330 parts of cement; 154 parts of water; 714 parts of fine aggregate; 1050 parts of coarse aggregate; 68 parts of fly ash; 9.5 parts of water reducer; 44 parts of an expanding agent; 0.8 parts of a compacting agent; the measured impervious grade is P8, and the chloride ion content of the prepared concrete is 0.027%; and the consistency value is higher, and the workability is better.
Specifically, in the K2 example, the concrete consisted of the following components in parts by weight: 359 parts of cement; 152 parts of water; 678 parts of fine aggregate; 1055 parts of coarse aggregate; 68 parts of fly ash; 10 parts of water reducer; 46 parts of an expanding agent; 0.85 parts of a compacting agent; the measured impervious grade is P6, and the chloride ion content of the prepared concrete is 0.026%; and the consistency value is higher, and the workability is better. See: shenzhen Water service engineering detection Limited provides concrete mix ratio test report.
The invention also provides a preparation method of the anti-cracking and anti-seepage concrete, which is used for preparing the anti-cracking and anti-seepage concrete, cement, river sand, an expanding agent and a compacting agent are sequentially added into a concrete mixer to be uniformly stirred, meanwhile, a water reducing agent is added into water for concrete mixing to be uniformly mixed, then the mixed liquid of the water and the water reducing agent is added into the concrete mixer to be fully stirred for 1-3 minutes, and then the concrete is taken out, and the anti-cracking and anti-seepage concrete is obtained after construction.
In conclusion, the anti-cracking and anti-seepage concrete adopts the components of cement, water, fine aggregate, coarse aggregate, fly ash, water reducer, expanding agent and compacting agent, so that the anti-cracking, anti-seepage and anti-seepage properties of the concrete can be effectively improved, and the long-term strength of the concrete can be fully improved; the invention does not need to adopt fiber-containing reinforcing agent or coupling agent, adopts a small amount of compacting agent (the components are only 0.6-1), has simple preparation method and convenient operation, and can be widely popularized and applied.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The anti-cracking and anti-seepage concrete is characterized by comprising the following components in parts by weight:
300-360 parts of cement;
140-160 parts of water;
600-800 parts of fine aggregate;
900-1100 parts of coarse aggregate;
60-70 parts of fly ash;
9-10 parts of water reducer;
30-50 parts of an expanding agent;
0.6 to 1 portion of compacting agent.
2. The crack resistant, impervious concrete of claim 1, wherein said cement is preferably portland cement.
3. The anti-cracking and anti-seepage concrete according to claim 1, wherein the fine aggregate is river sand, and the fineness modulus is 2.7-2.9; the coarse aggregate is crushed stone, and the grain size of the coarse aggregate is 5-25 mm.
4. The crack-resistant, impervious concrete according to claim 3, wherein the fine aggregate is river sand having a fineness modulus of 2.84, and the coarse aggregate has a particle size of 10 mm.
5. The anti-crack, anti-penetration concrete according to claim 1, wherein the water reducing agent is at least one of a polycarboxylic acid water reducing agent, a naphthalene water reducing agent, and a lignosulfonate water reducing agent.
6. The crack resistant, impervious concrete of claim 1, wherein said expansion agent is at least one of calcium sulfoaluminate, calcium sulfoaluminate-calcium oxide, calcium oxide.
7. The anti-cracking and anti-seepage concrete according to claim 1, wherein the compacting agent is an anti-seepage concrete waterproof compacting agent.
8. The anti-cracking and anti-seepage concrete according to claim 1, which is characterized by comprising the following components in parts by weight: 330 parts of cement; 154 parts of water; 714 parts of fine aggregate; 1050 parts of coarse aggregate; 68 parts of fly ash; 9.5 parts of water reducer; 44 parts of an expanding agent; and 0.8 parts of a compacting agent.
9. The anti-cracking and anti-seepage concrete according to claim 1, which is characterized by comprising the following components in parts by weight: 359 parts of cement; 152 parts of water; 678 parts of fine aggregate; 1055 parts of coarse aggregate; 68 parts of fly ash; 10 parts of water reducer; 46 parts of an expanding agent; 0.85 parts of compacting agent.
10. The preparation method of the anti-cracking and anti-seepage concrete is used for preparing the anti-cracking and anti-seepage concrete according to any one of claims 1 to 9, and is characterized in that cement, river sand, an expanding agent and a compacting agent are sequentially added into a concrete mixer to be uniformly stirred, meanwhile, a water reducing agent is added into water for concrete mixing to be uniformly mixed, then water and water reducing agent mixed liquid are added into the concrete mixer to be fully stirred for 1 to 3 minutes, and then the concrete is taken out, and the anti-cracking and anti-seepage concrete is obtained after construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211590419.8A CN116283119A (en) | 2022-12-12 | 2022-12-12 | Anti-cracking and anti-seepage concrete and preparation method thereof |
Applications Claiming Priority (1)
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