Moisture steaming blocking agent for plastic concrete

Abstract

A water evaporating inhibitor for plastic concrete is prepared in the following proportion by weight by the following raw materials: 10-50% wax or the wax-mixture; 2-35% non-ionic and / or anionic emulsifier; 19.5-81% water and / or organic solvent made up of hydrocarbons or esters or ketenes with boiling point at 60-320 Deg C; 0-16% auxiliary agent. Spray said substance to the surface of plastic concrete without initial setting which could decreases the evaporation of water on the surface of said concrete. The application of said invention is not affected by construction yard, element shape and position with convenient construction, which could not only guarantee engineering quality, but also save labor force, water, improve construction conditions, accelerate job progress with no change to the strength, abradability and durability of concrete. The surface bonding property is not affected by re-handling on surface. It also deduces or eliminates plastic constriction cracking on the concrete surface and raised shell phenomenon caused by heavy wind.

Description

technical field [0001] The invention relates to the field of concrete, in particular to a water evaporation inhibitor for plastic concrete which sprays a wax-containing water dispersion system or a self-emulsifying solution in an organic solvent on the surface of plastic concrete in a form of low concentration to reduce water evaporation. Background technique [0002] In the process of concrete site construction, it is often encountered that the concrete surface dries quickly, such as plateau concrete and / or concrete with high ambient temperature, low humidity, high wind speed, direct sunlight, cold external ambient temperature and huge internal heat generation, large Area paved with concrete (airport pavement), etc. Under the above conditions, the water evaporation rate on the concrete surface is higher than the bleeding rate of the concrete, and the concrete surface is prone to plastic shrinkage, cracking, crusting, and stickiness, and the surface has a spongy structure be...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem of rapid drying of the concrete surface in engineering, and provides a surface evaporation inhibitor for plastic concrete with labor saving, time saving, water saving and low cost

Images