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Antifreeze and anti-crack concrete

A concrete and antifreeze technology, which is applied in the field of concrete, antifreeze and anti-crack concrete, can solve the problems that concrete cannot meet the requirements, and achieve the effect of improving strength, solving cracks and high strength

Active Publication Date: 2017-07-18
CHINA THIRD METALLURGICAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the concrete mixed with conventional cement, sand, stones and water cannot meet the requirements.

Method used

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  • Antifreeze and anti-crack concrete

Examples

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Effect test

Embodiment 1

[0018] A kind of antifreeze and anti-crack concrete, suitable for daily minimum temperature: ≥ 5°C, component formula: cement 10.0%, sand 30.0%, gravel 42.0%, water 15.0%, admixture 2.0%, waterproof agent 1.0%, antifreeze agent 0.0% .

[0019] Among them, the cement is ordinary Portland cement, grade 32.5;

[0020] The admixture is a high-performance composite admixture, which is prepared by water reducing agent, expansion agent, cellulose ether, boric acid, aluminum powder, and sodium silicate in a weight ratio of 1:1:1:1:1:1; wherein , the water reducer is one of aliphatic powder water reducer, naphthalene powder water reducer, or polyhydroxy acid powder water reducer; the expansion agent is one of calcium oxide expansion agent, alum expansion agent and iron filings expansion agent ; Cellulose ether is a kind of methyl cellulose, hydroxypropyl methyl cellulose, ethyl cellulose, hydroxyethyl cellulose;

[0021] The waterproofing agent is a silicone-based waterproofing agent...

Embodiment 2

[0027] A kind of antifreeze and anti-crack concrete, suitable for daily minimum temperature: 5℃~-5℃, component formula: cement 12.0%, sand 28.0%, gravel 41.0%, water 14.0%, admixture 2.8%, waterproofing agent 1.2%, antifreeze agent 1.0%.

[0028] Among them, the cement is fly ash portland cement, grade 32.5;

[0029] The admixture is a high-performance composite admixture, which is prepared by water reducing agent, expansion agent, cellulose ether, boric acid, aluminum powder, and sodium silicate in a weight ratio of 1:1:1:1:1:1; wherein , the water reducer is one of aliphatic powder water reducer, naphthalene powder water reducer, or polyhydroxy acid powder water reducer; the expansion agent is one of calcium oxide expansion agent, alum expansion agent and iron filings expansion agent ; Cellulose ether is a kind of methyl cellulose, hydroxypropyl methyl cellulose, ethyl cellulose, hydroxyethyl cellulose;

[0030] The waterproofing agent is a high-grade fatty acid waterproof...

Embodiment 3

[0037] A kind of antifreeze and anti-crack concrete, suitable for daily minimum temperature: -5℃~-15℃, component formula: cement 13.0%, sand 28.0%, gravel 39.7%, water 14.0%, admixture 3.0%, waterproofing agent 1.2%, Antifreeze 1.1%.

[0038] Among them, the cement is fly ash portland cement, grade 42.5;

[0039] The admixture is a high-performance composite admixture, which is prepared by water reducing agent, expansion agent, cellulose ether, boric acid, aluminum powder, and sodium silicate in a ratio of 1:1:1:1:1:1; wherein, The water reducer is one of aliphatic powder water reducer, naphthalene powder water reducer, or polyhydroxy acid powder water reducer; the expansion agent is one of calcium oxide expansion agent, alum expansion agent and iron filings expansion agent; Cellulose ether is a kind of methyl cellulose, hydroxypropyl methyl cellulose, ethyl cellulose, hydroxyethyl cellulose;

[0040] The waterproofing agent is a high-grade fatty acid waterproofing agent;

...

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Abstract

The invention relates to anti-freezing and anti-cracking concrete in the field of building materials. The anti-freezing and anti-cracking concrete comprises following components in percentage by weight, 10-20% of cement, 25-30% of sand, 30-45% of gravel, 10-15% of water, 2.0-5.0% of additives, 1.0-2.0% of water-proof agent and 0.0-1.4% of anti-freezing agent, and is produced by burdening and stirring. Compared with the prior art, the anti-freezing and anti-cracking concrete has the advantages of high strength, good toughness, cracking resistance, leakage resistance, high stability and the like, is capable of effectively solving the problems of cracking, brittleness and water seepage caused by the fact that the concrete is subjected to repeated freezing and thawing due to change of temperature difference, and increasing the indexes such as strength, toughness and stability, and is especially suitable for high and cold areas in north.

Description

technical field [0001] The invention relates to a concrete in the field of building materials, in particular to an antifreeze and crack-resistant concrete. Background technique [0002] Concrete is widely used in underground engineering, bridges, pools, water towers, culverts, tunnels, wharves, dams, hydropower stations and other projects. It not only has high strength, toughness and stability requirements, but also must have certain waterproof performance. In the northern region, it is also necessary to have cold resistance and frost resistance. Especially in the alpine region, the temperature difference changes greatly, and the concrete is prone to cracks, brittleness, and water seepage after repeated freezing and melting processes, and its strength, toughness, and stability are seriously affected. Obviously, conventional cement, sand, and stones mixed with water cannot meet the requirements. Contents of the invention [0003] In order to overcome the defects of the ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B28/08C04B14/06
Inventor 王庆
Owner CHINA THIRD METALLURGICAL GRP
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