Waterproofing agent capable of enhancing waterproofing performance and water impermeability of concrete

Abstract

The invention discloses a waterproofing agent capable of enhancing waterproofing performance and water impermeability of concrete, which is composed of the following components in percentage by weight: 3% of alum, 11% of copper sulfate, 30% of fly ash, 4% of polycarboxylic acid water reducing agent, 26% of expanding agent, 0.6% of air entraining agent, 0.4% of alkyl sodium sulfonate, 17% of silica fume, 2% of epoxy resin, 1% of 6-dehydroprogesterone and 5% of lineae ablicantes arrowroot leaf powder. The fly ash is first-grade fly ash; the expanding agent is an alunite expanding agent EA-L, U-type cement expanding agent UEA, composite expanding agent CEA or calcium aluminate expanding agent AEA; and the air entraining agent is a non-rosin air entraining agent. The waterproofing agent can reduce the porosity, promote the hydration of the cement, enhance the density of the concrete, reduce the shrinkage of the concrete and improve the comprehensive durability of the concrete.

Description

technical field [0001] The invention relates to a waterproof agent capable of improving the waterproof and anti-seepage performance of concrete. Background technique [0002] Waterproofing is an important measure, even a fundamental measure, to improve the durability of cement concrete structures. The waterproof performance of cement concrete structure basically determines its durability. Hardened cement concrete, according to the traditional point of view, is a dense substance, but in fact, according to a large number of current research results, under the requirements of 50 or even 100 years of use, ordinary cement concrete is not only not good for water. Dense and permeable. Water is an important substance that causes durability damage to cement concrete structures and reinforced concrete structures. Whether it is soft water erosion of cement concrete, freeze-thaw damage, alkali-aggregate reaction, steel bar corrosion and sulfate corrosion, etc., or steel bar oxidation...

AI Technical Summary

Problems solved by technology

Practice has proved that most waterproofing agents can improve the impermeability of stick concrete. However, in the actual application process of the first three methods, there are often phenomena of concrete shrinkage and cracking that cause leakage.

Although the fourth method can avoid the shrinkage and cracking of concrete, it is expected that the amount of common expansion agent will be large.

cause waterproof failure