process for the application of spray concrete with reduced effect of rebound

摘要

the subject of the invention is a process for improving the properties of rebound concrete applied to spray which consists of including in it a micro silica that has been preliminarmind treated with 2 to 25% by weight of a liquid selected from among water, a alcanolammina, a polyol, and an aqueous solution of at least one additive for concrete, a alcanolammina.a polyol and a cellulosic compound soluble in water. the process is particularly effective when used together with a process of spraying dry.