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Composite concrete antiseptic agent

A concrete preservative and composite technology, applied in the field of concrete admixtures, can solve problems such as technical performance not really solving problems, achieve good self-corrosion performance, improve workability, improve slump and pumpability. Effect

Active Publication Date: 2009-07-08
YUNNAN INST OF BUILDING RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mostly focused on the market without really addressing the issues in terms of technical performance

Method used

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  • Composite concrete antiseptic agent

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Effect test

Embodiment 1

[0018] A. Naphthalene-based superplasticizer 10%

[0019] B. Na 2 PO 4 2%

[0020] C. Fatty alcohol sulfonate 1%

[0021] D. Expansion agent 47%

[0022] E. Silica fume 40%

[0023] This formula is mainly used for high-fluidity concrete, such as underground cast-in-situ piles, drainage channels and other concrete with poor construction conditions and high requirements. The amount of antiseptic is 10% of the cement amount.

Embodiment 2

[0025] A. Naphthalene superplasticizer 5%

[0026] B. Na 2 PO 4 2%

[0027] C. Fatty alcohol sulfonate 0.5%

[0028] D. Expansion agent 80%

[0029] E. Silica fume 12.5%

[0030] This formula is mainly used for concrete that does not require high fluidity but requires high anti-seepage. Such as basement post-pouring tape, pool wall, etc., the amount of preservatives is 10% of the cement amount.

[0031] At present, our composite concrete preservative has been well applied in engineering. The "Golden Water Bay" project constructed by China Nonferrous Metallurgical No. 4 Company, the "Xishuangbanna Golden Land Hotel" project constructed by Yunnan Construction Engineering Group No. In projects such as the staff housing foundation project and the "Guodian Yangzonghai Power Generation Co., Ltd." developed by the No. Requirements, the performance of concrete meets the requirements of national standards, and has obtained obvious economic and social benefits.

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Abstract

The invention relates to a compound concrete corrosion remover. Aiming at the serious hazard brought to concrete by corrosion, the foreign standards and the advanced technical ideas are used for reference so as to improve the anti-corrosive property of the concrete starting from improving four technical points of intensity, compactness, reduction of bleeding and rust resistance of the concrete. The compound concrete corrosion remover changes the prior concrete corrosion prevention thought and technical means. The developed compound concrete corrosion remover can ensure that the concrete has good comprehensive anti-corrosive property. Besides, the compound concrete corrosion remover can improve the construction operation working performance, improve the workability, the cohesive quality and the water preserving capability, and improve the slump and the pumpability. While satisfying the anti-corrosive property, the compound concrete corrosion remover still has the performances of a water reducing agent, a pumping agent and a waterproofing agent. The application of the compound concrete corrosion remover can substantially improve the lasting quality and the comprehensive corrosion resistance of the concrete, remarkably prolong the service life of a building and bring remarkable economic and social benefits.

Description

1. Technical field [0001] The invention relates to a concrete admixture, in particular to the improvement of the compound concrete preservative formula. 2. Background technology [0002] Under the physical damage and chemical erosion of concrete in the natural environment, surface cracking, peeling and corrosion of steel bars usually occur, which seriously affect the service life of buildings. Especially chemical corrosion, the current annual loss in our country is as high as 600 billion yuan, and 10 million tons of steel become rust due to corrosion. The problem has reached a point where it has to be solved. [0003] Concrete is susceptible to corrosion, that is, the concrete has insufficient ability to resist physical and chemical erosion such as carbonation, freeze-thaw, chloride ion, and sulfate erosion. The traditional concrete anti-corrosion methods are: (1) Use of sulfate-resistant cement: due to its poor resistance to Cl- corrosion, the Cl- - , SO 4 2- In the co...

Claims

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Application Information

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IPC IPC(8): C04B24/08C04B22/16
Inventor 邓岗李勤刘光宗李家祥李宏雷杜庆檐谢晓兰
Owner YUNNAN INST OF BUILDING RES
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