Waterproof repair mortar for building wall and preparation method thereof

Abstract

The present invention is a kind of waterproof repair mortar for building wall and its preparation method, which comprises the following components by weight: 2-10 parts of microcapsule hydrophobic material coated with silicon dioxide, 35-55 parts of cement, and 35 parts of quartz sand. ‑50 parts, 5‑8 parts of latex powder, 1‑3 parts of water-retaining thickening material, 0.5‑5 parts of water reducing agent; among them, the core layer of silica-coated microcapsule hydrophobic material is organosilicon hydrophobic Agent and dispersant, the mass ratio of the two is 1:2-3.5, the shell layer is a silica-based polymer-based network polymer, and the mass ratio of the core layer to the shell layer is 1:2-5. The invention also discloses a preparation method of the repair mortar. The repairing mortar prepared by adopting the formula and the preparation method of the invention has good water resistance, excellent penetration resistance, high tensile bonding strength, good water retention performance and no bleeding phenomenon.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a waterproof repair mortar for building walls and a preparation method thereof. Background technique [0002] In recent years, the problems of concrete spalling, cracking, damage and corrosion of steel bars on the surface of buildings have attracted increasing attention, which not only affects the appearance of buildings, but even endangers the normal use and safe service of buildings, and repairs are urgently needed. For this reason, the selection of materials suitable for building repairs is of great significance for protecting buildings, prolonging their service life and reducing maintenance costs. According to different damage problems of buildings, corresponding repair materials should be used, and some performance requirements are different according to different application occasions and engineering parts. Although there are many repair mortars at p...

AI Technical Summary

Problems solved by technology

Although there are many repair mortars at present, with the complexity of the parts to be repaired and the diversification of structures, there is an urgent need for waterproof repair materials to make up for it.