Permeable crystallization waterproof agent

Abstract

The invention relates to a permeable crystallization waterproof agent. The agent is prepared by mixing the following components in percentage by mass: 35 to 65 percent of superfine mineral powder, 15 to 30 percent of fly ash, 8 to 20 percent of calcium hydroxide, 1 to 3 percent of nano silicon oxide, 5 to 14 percent of organic silicon aid, 0 to 2.4 percent of sodium polyacrylate and 0.1 to 1.5 percent of polycarboxylic acid water reducing agent. The permeable crystallization waterproof agent is doped into concrete, active substances contained in the agent can react with a cement hydration product in the concrete to generate an insoluble crystal, and the capillary pore channels and micro cracks of the concrete are blocked, so that the density of the concrete is improved, and the permeability resistance and durability of the concrete are improved; and the agent can be widely applied to the permeability-resistant and waterproof construction of subways, ports, docks, dams, ponds, tunnels,basements and the like.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to a composition, in particular to a osmotic crystalline waterproofing agent used for concrete waterproofing of subways, port terminals, dam pools, tunnels, basements and the like. Background technique [0002] Concrete is a kind of heterogeneous porous brittle material, which belongs to porous structure in terms of microstructure, and there are a large number of pores and microcracks inside. These microscopic defects will become the water seepage channels of later concrete. In addition, the shrinkage cracks caused by the evaporation of water on the surface of concrete in the plastic stage and the temperature cracks generated in the hardening stage will also increase the permeability of concrete, which seriously affects the durability of concrete. [0003] Improving the impermeability of concrete structures is the key factor to improve the durability and other properties of ...

AI Technical Summary

Problems solved by technology

At present, osmotic crystalline waterproof materials mainly adopt foreign intellectual property products, such as PENETRON in the United States, XYPEX in Canada, etc. Domestic products are generally finished products that are reprocessed from imported osmotic crystalline masterbatches, such as Chinese patent numbers CN101654351A, CN101362867A, etc. , which is mainly configured with osmotic crystalline masterbatch, without forming its own real intellectual property rights, so the price is relatively expensive, which hinders its application in waterproof engineering

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