Anti-crack anti-freezing cement mortar

Abstract

The invention discloses anti-crack anti-freezing cement mortar. The anti-crack anti-freezing cement mortar is prepared by mixing coal ash, silicon ash, quartz sand, an early strength agent, a water reducing agent, water, fiber and a thickening agent. According to the anti-crack anti-freezing cement mortar provided by the invention, the common silicic acid serves as a main cementing material, and auxiliary materials such as the coal ash and the silicon ash are used cooperatively, so that the strength of the mortar is effectively improved; the quartz sand with different grain size are used in a matched way, and a proper amount of water-reducing agent, thickening agent and the early strength agent are added, so the porosity of the mortar is reduced and the earth strength of the mortar is improved; high-quality polyvinyl alcohol fiber and cement are added, so that high affinity and excellent alkali resistance and weather resistance are achieved, and crack caused by plastic shrinkage of the mortar and temperature change can be effectively controlled; moreover, the impact resistance, the permeation resistance and the anti-freezing property of the cement mortar are improved, and the anti-crack anti-freezing cement mortar can be widely applied to water conservancy project, roads and bridges, ports and piers and the like.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an anti-crack and anti-freeze cement mortar. Background technique [0002] The durability of cement mortar structures has always been a major problem that needs to be solved urgently in the engineering field. Cement-based composite materials have very broad application prospects in many fields such as road and bridge construction. At present, steel fibers, glass fibers, carbon fibers, and polypropylene fibers are mainly used to increase cement mortar in China, but they all have problems such as poor dispersion, difficult construction, and high cost. Contents of the invention [0003] The object of the invention is to provide a kind of anti-cracking antifreeze cement mortar, the technical scheme adopted in the present invention is as follows: [0004] An anti-crack and anti-freeze cement mortar prepared by mixing the following components according to weight percentage: [00...

AI Technical Summary

Problems solved by technology

At present, steel fiber, glass fiber, carbon fiber, and polypropylene fiber are mainly used to increase cement mortar in China, but there are problems such as poor dispersion, difficult construction, and high cost.