Concrete waterproof agent

Abstract

The invention provides a concrete waterproof agent, which is prepared from the following raw materials by weight: 1-60 parts of ammonium ferric sulfate, 1-30 of glacial acetic acid, 1-40 parts of 8-hydroxyquinoline, and 1-50 parts of sodium pyrosulfate. According to the present invention, the waterproof agent has good adaptability to concrete, has advanced and reasonable waterproof mechanism, andcan generate iron hydroxide colloid at the appropriate timing of cement hydration, wherein the colloid can be generated at the micro-gap, and block the gap, and has characteristics of good waterproofand anti-crack performance, good aging resistance, high anti-penetration strength and environmental protection.

Description

technical field [0001] The invention relates to a waterproofing agent, in particular to a waterproofing agent for concrete. [0002] technical background [0003] The present invention relates to the field of concrete. There are a large number of micro-cracks inside the concrete, which is the essential property of concrete. All kinds of waterproofing agents before the present invention have not taken effective measures to block the micro-cracks and fundamentally solve the problem of concrete leakage. The ferric chloride waterproofing agent recommended by GB50119-2013 immediately and completely generates a large amount of Fe(OH)3 colloids at the moment of adding water, but at this time the concrete structure has not yet formed, and the beneficial Fe(OH)3 colloids are not used to block later concrete. The micro-cracks formed; although expansive materials can cause beneficial expansion of concrete, they cannot decisively reduce the number of micro-cracks and block the gaps; the ...

AI Technical Summary

Problems solved by technology

The ferric chloride waterproofing agent recommended by GB50119-2013 immediately and completely generates a large amount of Fe(OH)3 colloids at the moment of adding water, but at this time the concrete structure has not yet formed, and the beneficial Fe(OH)3 colloids are not used to block later concrete. The micro-cracks formed; although expansive materials can cause beneficial expansion of concrete, they cannot decisively reduce the number of micro-cracks and block the gaps; the properties of organic compounds and concrete inorganic substances are very different, and the edges and corners of cement particles do not produce crystal nuclei Induction effect, such substances will not properly gather in the gaps and block the gaps; some people have found a new way, trying to reduce the shrinkage of concrete by reducing the surface tension, reduce the micro-cracks of concrete, and achieve the purpose of waterproofing

But this is the same as the expansion agent, it does not change the natural properties of the concrete itself with a large number of micro-cracks