An anti-crack and anti-seepage composite material for concrete

Abstract

The invention relates to an anti-cracking and anti-permeability composite material for concrete. The composite material comprises the following components in parts by weight: 82 to 83 parts of calciumcarbonate, 2 to 5 parts of magnesium carbonate, 0.3 to 4 parts of titanium dioxide, 5 to 6 parts of bone glue powder, 0.2 to 0.3 part of zinc oxide, 0.5 to 0.6 part of lead nitrate, 1 to 20 parts ofstearic acid, 0.5 to 1.0 part of palmatic acid, and 0.2 to 0.3 part of polyethylene glycol. The composite material has the advantages that the composite material has a self-cleaning function and can effectively improve the anti-frost property and erosion resistance of concrete.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to an anti-crack and anti-seepage composite material used for concrete. Background technique [0002] Concrete is one of the most important civil engineering materials in contemporary times and is widely used in all aspects of construction. However, due to the widespread shrinkage of concrete, especially large-volume concrete and high-strength concrete, concrete cracks are caused, and the performance of concrete strength, anti-seepage, and corrosion resistance is reduced. However, the obvious defects of shrinkage-compensated concrete materials currently used in the market are: the heat of hydration of concrete is high, the shrinkage and deformation of concrete are large, and phenomena such as concrete cracking and leakage are common, and at the same time, the strength of concrete is greatly reduced. And domestic various types of concrete shrinkage compensating materials, such as e...

AI Technical Summary

Problems solved by technology

However, due to the widespread shrinkage of concrete, especially large-volume concrete and high-strength concrete, concrete cracks are caused, and concrete strength, anti-seepage, and corrosion resistance are reduced.

However, the obvious defects of shrinkage-compensated concrete materials currently used in the market are: the heat of hydration of concrete is high, the shrinkage and deformation of concrete are large, concrete cracking and leakage are common, and at the same time, the strength of concrete is greatly reduced.

[0005] In view of the above phenomenon, the patent CN 104140219 B discloses an anti-crack and anti-seepage agent for concrete, which includes the following components in the following parts by weight: 10-70 parts of fly ash, 10-50 parts of fluorogypsum, 10-50 parts of phosphate rock slag 70 parts, the anti-cracking and anti-seepage agent for concrete can reduce the heat of hydration, compensate for concrete shrinkage, improve concrete strength, prevent its cracking, leakage, etc., and improve the stability and durability of concrete; but the anti-cracking agent for concrete There are still some defects in the use of anti-seepage agents: 1. The anti-crack and anti-seepage agent for concrete does not have self-cleaning function; Meeting the requirements of society requires further research and improvement

[0006] In addition, in terms of anti-cracking and impermeability composite materials, the industry is currently paying more attention to finding nano-materials such as graphene or other new materials to replace traditional concrete additive formulations, although it can sometimes improve concrete additives to a certain extent. performance, but the production cost is too high. For concrete widely used in civil engineering, the scope of application is narrow

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