Leakage self-repairing waterproof mortar and preparation method thereof

Abstract

The invention discloses waterproof mortar with a leakage self-repair function and a method for preparing the waterproof mortar. The waterproof mortar comprises, by weight, 10-40% of silicate cement, 5-20% of sulphoaluminate cement, 5-15% of polymers with high water absorption, 3-10% of silicon dioxide powder, 1-3% of dispersing agents, 1-3% of water reducing agents, 5-10% of water-soluble polymers, 3-5% of calcium hydroxide, 10-30% of quartz sand and the balance fillers. The waterproof mortar and the method have the advantages that the problem of leakage due to shrinkage cracking of concrete (mortar) can be solved by the aid of water self-repair processes; the waterproof mortar is convenient and easy to construct; the waterproof mortar can be self-repaired after cracking, and accordingly the problem of trouble of leaking stopping construction on air faces after leakage occurs can be solved; the waterproof mortar can be intelligently self-repaired, a self-repair idea for the waterproof mortar is a combination of stiffness and flexibility, accordingly the waterproof mortar can be used even in dry and wet alternate environments, and effects of the waterproof mortar still can be realized under repeated cracking conditions; the curing time of the waterproof mortar can be controlled, and the waterproof mortar can be used under leaking stopping conditions.

Description

technical field [0001] The invention belongs to the technical field of building waterproof materials, and in particular relates to a leakage self-repairing waterproof mortar capable of automatically repairing leakage defects after leakage and a preparation method thereof. Background technique [0002] The current waterproof materials are mainly waterproof membranes and waterproof coatings. [0003] Modified asphalt membranes, such as SBS and APP membranes, which are more popular in the waterproof material market at present, require flame spray guns to carry out on-site surface melting, require open flames, have high technical requirements, and easily cause the surface hot melt adhesive to coke. The width of the membrane is only one meter, and there are many overlaps during laying. Due to the shape requirements of the base layer, it needs to be cut, and the amount of overlap is increased, which is likely to cause hidden dangers of joint waterproofing; self-adhesive asphalt wa...

AI Technical Summary

Problems solved by technology

This is a common problem in construction at present. Although scholars have made great efforts in various aspects, due to construction, maintenance and human factors, cracks in mortar and concrete are still inevitable.