Jet concrete fast hardening agent

Abstract

A quick-setting agent for sprayed concrete is prepared from bauxite, sodium carbonate, lime stone and coal through proportional mixing, grinding, calcining at 1250 deg.C, proportionally mixing it with slags of fluidizing furnace, stirring, and grinding. Its advantages are high effect and low cost.

Description

Technical field [0001] The invention relates to a concrete quick-setting admixture, in particular to a sprayed concrete quick-setting admixture used in the construction of mines, tunnels, subways and the like. Background technique [0002] The known accelerator for shotcrete is made by adding lead-oxygen clinker to mixed materials such as alumite, alum mud, and gypsum that have been calcined at a high temperature. As a result, the late-stage strength of the concrete is low, and the rebound rate is high. Adapting to the requirements of the construction process, the quality of the project cannot be guaranteed; at the same time, the high temperature calcination of alunite increases the power consumption, resulting in higher production costs. Summary of the invention [0003] The purpose of the present invention is to provide a shotcrete accelerator produced by using waste boiling slag from a power plant, which greatly re...

AI Technical Summary

Problems solved by technology

[0002] The known quick-setting agent for shotcrete is made by adding lead-oxygen clinker to high-temperature calcined alum stone, alum mud, gypsum and other mixed materials, which leads to low strength of concrete in the later stage and high rebound rate. To meet the requirements of construction technology, the quality of the project cannot be guaranteed; at the same time, due to the need to calcinate alunite at high temperature, the power consumption is increased, resulting in higher production costs