CN108178554A - A kind of preparation method of concrete anti-cracking agent - Google Patents
A kind of preparation method of concrete anti-cracking agent Download PDFInfo
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- CN108178554A CN108178554A CN201711257125.2A CN201711257125A CN108178554A CN 108178554 A CN108178554 A CN 108178554A CN 201711257125 A CN201711257125 A CN 201711257125A CN 108178554 A CN108178554 A CN 108178554A
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Classifications
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B14/38—Fibrous materials; Whiskers
- C04B14/46—Rock wool ; Ceramic or silicate fibres
- C04B14/4643—Silicates other than zircon
- C04B14/4656—Al-silicates, e.g. clay
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
Abstract
The invention discloses a kind of concrete anti-cracking agents, belong to technical field of concrete.The present invention forms fibre mullite crystal by high-temperature calcination kyanite, increase permeance property, improve filling of the antimitotic agent to gap, it is irreversible after kyanite expansion simultaneously, increase internal clearance, load the electroslag after pyrolytic, anionic polyacrylamide is reused to wrap up particle, infiltration, the free calcium ion of absorption, gel of calcium silicate is formed with the substance in antimitotic agent, gap is filled, and it is modified using chitosan, increase the anti-microbial property of antimitotic agent, also improve the intensity of gel, further increase the effect of antimitotic agent.It is stronger that the present invention solves current concrete anti-cracking agent water imbibition, unfavorable to cracking resistance, also results in the problem of antimitotic agent must add water-reducing agent to offset the influence of water suction effect water consumption.
Description
Technical field
The invention belongs to technical field of concrete, and in particular to a kind of preparation method of concrete anti-cracking agent.
Background technology
Concrete is one of the present age most important civil engineering material, has abundant raw material, cheap, production technology
The characteristics of simple, while the concrete after hardening has the features such as compression strength is high, and durability is good, and strength grade range is wide.But
It is, since concrete belongs to hydraulic material, during its preparation, hardening and use, to be often formed in the interior thereof gap
And dehydration drying shrinkage, and concrete is made the defects of impervious poor waterproof properties, desciccation crack is more occur.To solve lacking for above-mentioned concrete
It falls into, usually adds a certain amount of functional additive, such as swelling agent, antimitotic agent into concrete, it is swollen in this kind of additive
Swollen component can compensate for the contraction of concrete, so as to achieve the purpose that prevent concrete shrinkage from cracking.
Antimitotic agent is a kind of novel freedom from cracking material, is with AEBE polysaccharides and the polymerization of 50US cellulose ethers boiomacromolecule
Object make full use of cement mortar and it is concrete curing during physics and chemism chemical industry synthesis, from physics and chemistry two
Aspect carries out anticracking, cracking resistance, can significantly improve cement mortar and the intensity of concrete.It is added in cement mortar and concrete anti-
Agent is split, the crackle of mortar and concrete and the generation of hollowing phenomenon can be greatly reduced, increases mortar strength, improves engineering matter
Amount.It is widely used in work China Democratic National Construction Association, bridge, highway, runway, dam cement components and gypsum, cement products, mortar（It is poly-
Close object mortar, anticracking grout, decorative mortar）In concrete.It is particularly suitable for protecting steel wire net rack in mixing system outside inner-outer wall, exterior wall
The evil spirit that GRG polyphenyl plate surfaces etc. have demand of anti-crack is exempted from mortar.Antimitotic agent type is various at present, but mostly using lime, flyash,
Silicon ash class material adds some auxiliary agents composition again, can a degree of raising intensity, but because its water imbibition is stronger, to cracking resistance
Unfavorable, water-reducing agent must be added to offset the influence of silicon ash water suction effect water consumption by also resulting in the antimitotic agent, increase cracking resistance
The cost of agent.Therefore, we are existing to solve the problems, such as it is necessary to produce a kind of better antimitotic agent.
Invention content
The technical problems to be solved by the invention：It is stronger for current concrete anti-cracking agent water imbibition, it is unfavorable to cracking resistance, together
When cause antimitotic agent that must add water-reducing agent offset water suction effect water consumption influence the problem of, a kind of concrete anticracking is provided
The preparation method of agent.
In order to solve the above technical problems, the present invention is using technical solution as described below：
A kind of preparation method of concrete anti-cracking agent, the preparation method include the following steps：
（1）Take kyanite, carbide slag in mass ratio 1:2 ~ 4, it is put into pulverizer and crushes, collect crushed material, and be put into calcining furnace
In calcined, collect calcined material, by calcined material, additive and ethanol solution in mass ratio 6 ~ 9:1:3, it is put into ball in ball mill
Mill collects ball milling object；
（2）Ball milling object is dried, be sieved, collect sieving particle, count in parts by weight, take 85 ~ 90 parts of ethanol solutions, 45 ~
50 parts of sieving particles, 27 ~ 32 parts of anionic polyacrylamide, 11 ~ 13 parts of chitosans, 5 ~ 9 parts of n-amyl alcohols, 4 ~ 7 parts of catalyst and 3
~ 6 parts of auxiliary agents；
（3）Ethanol solution, sieving particle, anionic polyacrylamide and n-amyl alcohol are put into reactor first, at 80 ~ 90 DEG C
Lower stirring, adds chitosan, catalyst and auxiliary agent, boosts to 1.2 ~ 1.3MPa, is warming up to 105 ~ 110 DEG C, insulation reaction；
（4）It is cooled to room temperature after reaction above-mentioned, discharges, collect out material, be freeze-dried to going out material, ball milling,
Sieving collects sieving particle to get concrete anti-cracking agent.
The step（1）Middle calcining is calcined for program, is warming up to 1000 ~ 1100 DEG C first, is calcined 30 ~ 40min, is warming up to
1250 ~ 1350 DEG C, 1 ~ 2h is calcined, then be warming up to 1480 ~ 1500 DEG C, calcine 2 ~ 3h.
The step（1）Additive is by cetyl trimethylammonium bromide, methyltriethoxysilane in mass ratio 1:1
It mixes.
The catalyst is any one in platinum catalyst, cerous nitrate.
The auxiliary agent is in mass ratio 0.4 ~ 1.3:1:2, by neopelex, cetyl trimethylammonium bromide
And vermiculite granule is stirred evenly to get auxiliary agent.
Compared with other methods, advantageous effects are the present invention：
（1）The present invention forms fibre mullite crystal by high-temperature calcination kyanite, increases permeance property, improves antimitotic agent pair
The filling in gap, at the same it is irreversible after kyanite expansion, internal clearance is increased, loads the electroslag after pyrolytic, then make
Particle is wrapped up with anionic polyacrylamide, is infiltrated, using performances such as anionic polyacrylamide absorption, absorption is free
Calcium ion, in antimitotic agent substance formed gel of calcium silicate, gap is filled, simultaneously because by using methyl three
Modification of the Ethoxysilane to particulate matter increases the water resistance of antimitotic agent, reduces the demand to moisture content, and utilize shell
Glycan is modified it, increases the anti-microbial property of antimitotic agent, also improves the intensity of gel, further increases antimitotic agent
Effect.
（2）The present invention also added vermiculite granule, expands reversibility and water absorbing properties using it, gap is squeezed
Pressure, while provides moisture needed for antimitotic agent, at the same by the use of using neopelex, cetyl trimethylammonium bromide as
Template promotes the calcium silicates gellike internal performance space net structure generated during use, enhances filling effect, and
Since the presence of n-amyl alcohol can reduce the generation of bubble, accelerate the rate of drying of gel, enhance the effect of concrete anti-cracking agent.
Specific embodiment
The preparation of additive：By cetyl trimethylammonium bromide, methyltriethoxysilane in mass ratio 1:1 mixing and
Into.
The selection of catalyst：Platinum catalyst（Shaanxi Ruike New Materials Co., Ltd.：Platinum oxidation Al catalysts）, nitric acid
Any one in cerium.
The preparation of auxiliary agent：In mass ratio 0.4 ~ 1.3:1:2, by neopelex, cetyl trimethyl bromination
Ammonium and 300 mesh vermiculite granules are stirred evenly to get auxiliary agent.
Anionic polyacrylamide is chosen in Henan Sai Ke Environmental Protection Technology Co., Ltd.
A kind of preparation method of concrete anti-cracking agent, the preparation method include the following steps：
（1）Take kyanite, carbide slag in mass ratio 1:2 ~ 4, it is put into pulverizer and 50min is crushed with 800r/min, collect and crush
Object, and be put into calcining furnace and calcined, it is warming up to 1000 ~ 1100 DEG C first, calcines 30 ~ 40min, is warming up to 1250 ~ 1350
DEG C, 1 ~ 2h is calcined, then be warming up to 1480 ~ 1500 DEG C, calcine 2 ~ 3h, calcined material is collected, by calcined material, additive and ethanol solution
In mass ratio 6 ~ 9:1:3, it is put into ball mill with 900r/min ball milling 2h, collects ball milling object；
（2）Ball milling object is dried, crosses 200 mesh sieve, sieving particle is collected, counts in parts by weight, take 85 ~ 90 parts of 1.2mol/L
Ethanol solution, 45 ~ 50 parts sieving particles, 27 ~ 32 parts of anionic polyacrylamide, 11 ~ 13 parts of chitosans, 5 ~ 9 parts of n-amyl alcohols, 4 ~
7 parts of catalyst and 3 ~ 6 parts of auxiliary agents；
（3）Ethanol solution, sieving particle, anionic polyacrylamide and n-amyl alcohol are put into reactor first, at 80 ~ 90 DEG C
Lower stirring 40min, adds chitosan, catalyst and auxiliary agent, boosts to 1.2 ~ 1.3MPa, is warming up to 105 ~ 110 DEG C, heat preservation is anti-
Answer 4 ~ 6h；
（4）It is cooled to room temperature after reaction above-mentioned, discharges, collect out material, be freeze-dried to going out material, ball milling,
200 mesh sieve is crossed, collects sieving particle to get concrete anti-cracking agent.
Example 1
The preparation of additive：By cetyl trimethylammonium bromide, methyltriethoxysilane in mass ratio 1:1 mixes.
The selection of catalyst：Platinum catalyst（Shaanxi Ruike New Materials Co., Ltd.：Platinum oxidation Al catalysts）.
The preparation of auxiliary agent：In mass ratio 0.4:1:2, by neopelex, cetyl trimethylammonium bromide and
300 mesh vermiculite granules are stirred evenly to get auxiliary agent.
Anionic polyacrylamide is chosen in Henan Sai Ke Environmental Protection Technology Co., Ltd.
A kind of preparation method of concrete anti-cracking agent, the preparation method include the following steps：
（1）Take kyanite, carbide slag in mass ratio 1:2, it is put into pulverizer and 50min is crushed with 800r/min, collect crushed material,
And be put into calcining furnace and calcined, it is warming up to 1000 DEG C first, calcines 30min, is warming up to 1250 DEG C, calcines 1h, then heat up
To 1480 DEG C, 2h is calcined, calcined material is collected, by calcined material, additive and ethanol solution in mass ratio 6:1:3, it is put into ball mill
In with 900r/min ball milling 2h, collect ball milling object；
（2）Ball milling object is dried, crosses 200 mesh sieve, sieving particle is collected, counts in parts by weight, take 85 parts of 1.2mol/L second
Alcoholic solution, 45 parts of sieving particles, 27 parts of anionic polyacrylamide, 11 parts of chitosans, 5 parts of n-amyl alcohols, 4 parts of catalyst and 3 parts
Auxiliary agent；
（3）Ethanol solution, sieving particle, anionic polyacrylamide and n-amyl alcohol are put into reactor first, at 80 DEG C
40min is stirred, chitosan, catalyst and auxiliary agent is added, boosts to 1.2MPa, be warming up to 105 DEG C, insulation reaction 4h；
（4）It is cooled to room temperature after reaction above-mentioned, discharges, collect out material, be freeze-dried to going out material, ball milling,
200 mesh sieve is crossed, collects sieving particle to get concrete anti-cracking agent.
Example 2
The preparation of additive：By cetyl trimethylammonium bromide, methyltriethoxysilane in mass ratio 1:1 mixes.
The selection of catalyst：Cerous nitrate.
The preparation of auxiliary agent：In mass ratio 1.3:1:2, by neopelex, cetyl trimethylammonium bromide and
300 mesh vermiculite granules are stirred evenly to get auxiliary agent.
Anionic polyacrylamide is chosen in Henan Sai Ke Environmental Protection Technology Co., Ltd.
A kind of preparation method of concrete anti-cracking agent, the preparation method include the following steps：
（1）Take kyanite, carbide slag in mass ratio 1:4, it is put into pulverizer and 50min is crushed with 800r/min, collect crushed material,
And be put into calcining furnace and calcined, it is warming up to 1100 DEG C first, calcines 40min, is warming up to 1350 DEG C, calcines 2h, then heat up
To 1500 DEG C, 3h is calcined, calcined material is collected, by calcined material, additive and ethanol solution in mass ratio 9:1:3, it is put into ball mill
In with 900r/min ball milling 2h, collect ball milling object；
（2）Ball milling object is dried, crosses 200 mesh sieve, sieving particle is collected, counts in parts by weight, take 90 parts of 1.2mol/L second
Alcoholic solution, 50 parts of sieving particles, 32 parts of anionic polyacrylamide, 13 parts of chitosans, 9 parts of n-amyl alcohols, 7 parts of catalyst and 6 parts
Auxiliary agent；
（3）Ethanol solution, sieving particle, anionic polyacrylamide and n-amyl alcohol are put into reactor first, at 90 DEG C
40min is stirred, chitosan, catalyst and auxiliary agent is added, boosts to 1.3MPa, be warming up to 110 DEG C, insulation reaction 6h；
（4）It is cooled to room temperature after reaction above-mentioned, discharges, collect out material, be freeze-dried to going out material, ball milling,
200 mesh sieve is crossed, collects sieving particle to get concrete anti-cracking agent.
Example 3
The preparation of additive：By cetyl trimethylammonium bromide, methyltriethoxysilane in mass ratio 1:1 mixes.
The selection of catalyst：Platinum catalyst（Shaanxi Ruike New Materials Co., Ltd.：Platinum oxidation Al catalysts）.
The preparation of auxiliary agent：In mass ratio 0.85:1:2, by neopelex, cetyl trimethylammonium bromide and
300 mesh vermiculite granules are stirred evenly to get auxiliary agent.
Anionic polyacrylamide is chosen in Henan Sai Ke Environmental Protection Technology Co., Ltd.
A kind of preparation method of concrete anti-cracking agent, the preparation method include the following steps：
（1）Take kyanite, carbide slag in mass ratio 1:3, it is put into pulverizer and 50min is crushed with 800r/min, collect crushed material,
And be put into calcining furnace and calcined, it is warming up to 1050 DEG C first, calcines 35min, is warming up to 1300 DEG C, calcines 1.5h, then rise
Temperature calcines 2.5h to 1490 DEG C, calcined material is collected, by calcined material, additive and ethanol solution in mass ratio 7.5:1:3, it is put into
With 900r/min ball milling 2h in ball mill, ball milling object is collected；
（2）Ball milling object is dried, crosses 200 mesh sieve, sieving particle is collected, counts in parts by weight, take 87.5 parts of 1.2mol/L
Ethanol solution, 47.5 parts of sieving particles, 29.5 parts of anionic polyacrylamide, 12 parts of chitosans, 7 parts of n-amyl alcohols, 5.5 parts of catalysis
Agent and 4.5 parts of auxiliary agents；
（3）Ethanol solution, sieving particle, anionic polyacrylamide and n-amyl alcohol are put into reactor first, at 85 DEG C
40min is stirred, chitosan, catalyst and auxiliary agent is added, boosts to 1.25MPa, be warming up to 107 DEG C, insulation reaction 5h；
（4）It is cooled to room temperature after reaction above-mentioned, discharges, collect out material, be freeze-dried to going out material, ball milling,
200 mesh sieve is crossed, collects sieving particle to get concrete anti-cracking agent.
Comparative example 1
It is essentially identical with the preparation process of embodiment 2, it has only the difference is that preparing in concrete anti-cracking agent raw material and lacks auxiliary agent.
Comparative example 2
The concrete anti-cracking agent of company of Hefei City production.
One layer of oil is smeared during experiment on the bottom plate in the range of frame surrounds, prevents test specimen moisture from bottom surface evaporation loss.
A desk fan is placed in the side away from mold short side 15cm, fan blade center is parallel with surface of test piece, and the wind speed of concrete surface is
4.0 ~ 5.0m/s, 1000w iodine-tungsten lamp are located at the top 1.2m of test specimen cross central line, and at template long side 15cm, continuous dry is shone
4h is closed.During experiment environment temperature control 20 DEG C ± 3 DEG C, relative humidity be 60 ± 5%, concrete mix is first poured into this
Molding is plugged and pounded in mold, test specimen is respectively placed in mould in the environment of wind lamp photograph by smooth out surface, and fracture width is measured with special
Fracture width detector tracking observation is carried out to the cracking situation of each concrete slab.Under conditions of wind lamp photograph, to test specimen
It is observed for 24 hours.After the test, on each concrete slab of essential record crack initial cracking time（Start to occur crack when
Between）, flaw size（Maximum crack width and longest fracture length when for 24 hours）.Fracture length cotton is walked along crack
To obtaining corresponding length, it is visible that fracture length is subject to naked eyes, its value L is measured with steel tape, in terms of mm；The width d in crack
It is measured with the special fracture width detector for measuring fracture width, the fracture width near fracture length midpoint represents the crack
Maximum crack.Test result is shown in Table 1.The crack occurrence gross area is calculated as follows：
Acr=Σ Aimax*Li
Acr in formula -- the test specimen crack name gross area（mm2）；
Aimax -- the i-th crack name maximum crack width（mm）；
Li -- the i-th crack length（mm）.
Table 1：
By the data of embodiment 1 ~ 3 as it can be seen that example 2 is optimal example, the concrete anti-cracking agent comprehensive performance of gained is best.It is comprehensive
It is above-mentioned, it is found that concrete anti-cracking agent raw material of the invention has synergistic effect, more preferable than commercial product effect, is worth
It promotes.
Claims (5)
1. a kind of preparation method of concrete anti-cracking agent, which is characterized in that the preparation method includes the following steps：
（1）Take kyanite, carbide slag in mass ratio 1:2 ~ 4, it is put into pulverizer and crushes, collect crushed material, and be put into calcining furnace
In calcined, collect calcined material, by calcined material, additive and ethanol solution in mass ratio 6 ~ 9:1:3, it is put into ball in ball mill
Mill collects ball milling object；
（2）Ball milling object is dried, be sieved, collect sieving particle, count in parts by weight, take 85 ~ 90 parts of ethanol solutions, 45 ~
50 parts of sieving particles, 27 ~ 32 parts of anionic polyacrylamide, 11 ~ 13 parts of chitosans, 5 ~ 9 parts of n-amyl alcohols, 4 ~ 7 parts of catalyst and 3
~ 6 parts of auxiliary agents；
（3）Ethanol solution, sieving particle, anionic polyacrylamide and n-amyl alcohol are put into reactor first, at 80 ~ 90 DEG C
Lower stirring, adds chitosan, catalyst and auxiliary agent, boosts to 1.2 ~ 1.3MPa, is warming up to 105 ~ 110 DEG C, insulation reaction；
（4）It is cooled to room temperature after reaction above-mentioned, discharges, collect out material, be freeze-dried to going out material, ball milling,
Sieving collects sieving particle to get concrete anti-cracking agent.
2. the preparation method of concrete anti-cracking agent according to claim 1, which is characterized in that the step（1）Middle calcining is
Program is calcined, and is warming up to 1000 ~ 1100 DEG C first, calcines 30 ~ 40min, is warming up to 1250 ~ 1350 DEG C, calcines 1 ~ 2h, then heat up
To 1480 ~ 1500 DEG C, 2 ~ 3h is calcined.
3. the preparation method of concrete anti-cracking agent according to claim 1, which is characterized in that the step（1）Additive is
By cetyl trimethylammonium bromide, methyltriethoxysilane in mass ratio 1:1 mixes.
4. the preparation method of concrete anti-cracking agent according to claim 1, which is characterized in that the catalyst is platinum catalysis
Any one in agent, cerous nitrate.
5. the preparation method of concrete anti-cracking agent according to claim 1, which is characterized in that the auxiliary agent is in mass ratio
0.4~1.3:1:2, neopelex, cetyl trimethylammonium bromide and vermiculite granule are stirred evenly to help
Agent.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109836111A (en) * | 2019-02-25 | 2019-06-04 | 方建波 | A kind of heat insulation anti-crack mortar |
| CN109912250A (en) * | 2019-04-19 | 2019-06-21 | 湖北恒利建材科技有限公司 | It is a kind of efficiently to reduce water-proofing anticracking agent and preparation method thereof |
| CN112430004A (en) * | 2020-12-14 | 2021-03-02 | 成都果烨菱建筑科技有限公司 | Preparation method of concrete expanding agent |
| CN112456861A (en) * | 2020-12-14 | 2021-03-09 | 成都果烨菱建筑科技有限公司 | Preparation method of concrete waterproof compacting agent |
| CN112592099A (en) * | 2020-12-28 | 2021-04-02 | 成都翎渠杉建筑科技有限公司 | Preparation method of additive for high-strength concrete |
| CN113105167A (en) * | 2021-03-31 | 2021-07-13 | 云南森博混凝土外加剂有限公司 | Premixing process for concrete |
| CN115745452A (en) * | 2021-09-02 | 2023-03-07 | 江苏苏博特新材料股份有限公司 | Concrete anti-cracking material, preparation method and application thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109836111A (en) * | 2019-02-25 | 2019-06-04 | 方建波 | A kind of heat insulation anti-crack mortar |
| CN109912250A (en) * | 2019-04-19 | 2019-06-21 | 湖北恒利建材科技有限公司 | It is a kind of efficiently to reduce water-proofing anticracking agent and preparation method thereof |
| CN112430004A (en) * | 2020-12-14 | 2021-03-02 | 成都果烨菱建筑科技有限公司 | Preparation method of concrete expanding agent |
| CN112456861A (en) * | 2020-12-14 | 2021-03-09 | 成都果烨菱建筑科技有限公司 | Preparation method of concrete waterproof compacting agent |
| CN112592099A (en) * | 2020-12-28 | 2021-04-02 | 成都翎渠杉建筑科技有限公司 | Preparation method of additive for high-strength concrete |
| CN113105167A (en) * | 2021-03-31 | 2021-07-13 | 云南森博混凝土外加剂有限公司 | Premixing process for concrete |
| CN115745452A (en) * | 2021-09-02 | 2023-03-07 | 江苏苏博特新材料股份有限公司 | Concrete anti-cracking material, preparation method and application thereof |
| CN115745452B (en) * | 2021-09-02 | 2024-03-29 | 江苏苏博特新材料股份有限公司 | Concrete anti-cracking material, preparation method and application thereof |
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