Cementitious capillary crystalline waterproofing agent

Abstract

The invention discloses a cementitious capillary crystalline waterproofing agent, which contains the following raw materials in parts by weight: 50 parts of Portland cement; 25 parts of quartz sand; 9 parts of siliceous dust; 3 parts of calcium hydroxide; 2 parts of sodium bentonite; 1 part of kieselguhr; 3.9 parts of instant sodium silicate; 2.5 parts of aluminum potassium sulfate; 0.3 parts of zinc fluosilicate; 0.20 parts of sodium polyacrylate; 0.2 parts of hydroxypropyl methyl cellulose; 2 parts of zinc stearate; 0.5 parts of naphthalene water reducer; 0.2 parts of sugar lime; 0.1 parts of citric acid; and 0.1 parts of antifoaming agent. After the raw materials are weighed according to the proportions, the raw materials are ground into particles with grain size more than or equal to 200-mesh sieve in a ball mill to obtain the finished product. The invention has the advantages that the cost is low, the anti-permeability is good, the self-healing performance is good, the bonding power is strong, the steel bar corrosion is prevented, no toxicity and no harmfulness are caused and the construction is easy.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a cement-based permeable crystalline waterproofing agent. Background technique [0002] Cement-based permeable crystalline waterproof coatings are mainly made of masterbatches with active chemical components, Portland cement, and refined quartz sand. The active substances are transported and filled in the micropores, micro-slits and capillaries of the concrete, catalyzing the rehydration of the particles and incompletely hydrated components in the concrete, forming insoluble dendritic crystals and combining with the concrete to form a whole, preventing Water and harmful substances from all directions. Even if the concrete structure is partially damaged and leaks (the crack is less than 0.3mm), it will repair and heal itself under the action of crystallization, and has multiple anti-seepage capabilities, thus essentially changing the crack caused by the instability of ...

AI Technical Summary

Problems solved by technology

This core "masterbatch" is expensive and difficult to promote