Cement-based permeable crystalline waterproof material based on nano-silicon-based material modification and its preparation and application

Abstract

The invention relates to a cement-based permeable crystalline waterproof material modified based on nano-silicon-based materials and its preparation and application. The waterproof material includes the following components in parts by weight: 45-65 parts of cement, 14-32 parts of quartz sand, 5-10 parts of retarder, 0.1-0.4 parts of nano-silicon-based material, 2-9 parts of crystal precipitation agent, 0.5-5 parts of surfactant, 0.5-2 parts of complexing agent, 1-5 parts of calcium ion compensator, 0.5-2 parts of water reducer, 0.2-2 parts of cellulose ether. Compared with the prior art, the waterproof material of the present invention is suitable for repairing the internal pore cracks of concrete. When the cement-based material produces cracks (less than 0.4mm), it generates insoluble deposits in the cement-based material cracks under the condition of water , Fill and seal the cracks of cement-based materials, and realize the self-healing of cracks in cement-based materials.

Description

technical field [0001] The invention belongs to the technical field of building waterproof materials, and relates to a cement-based permeable crystalline waterproof material modified based on nano-silicon-based materials and its preparation and application. Background technique [0002] In recent years, my country's construction industry has developed rapidly, and the scale of construction has continued to increase, but more and more building leakage problems have occurred. Relevant surveys have shown that the problem of housing leakage is not optimistic, and most buildings have different degrees of leakage. leak. The order of building leakage rate is the top floor (95%), residential buildings (63.6%), and underground space (57.4%). According to the statistics of the Ministry of Construction, more than half of the complaints about project quality are about building leakage. There are many factors that affect the waterproof quality of buildings, involving many aspects such a...

AI Technical Summary

Problems solved by technology

After the composite admixture is added to the cement-based waterproof material, under the action of water, the active chemical substances in the waterproof material have strong permeability, which promotes the hydration reaction of unhydrated cement particles and generates a large amount of water. The needle-like crystals can fill and close the capillary channels, so that the cement concrete has excellent waterproof and anti-seepage functions. Although the active material in this invention has good permeability, it is difficult to quickly repair the cracks and pores of the concrete and improve the waterproof and anti-seepage performance.

Images