Set retarding reinforcing agent for permeable concrete and method for preparing set retarding reinforcing agent

Abstract

The invention discloses a set retarding reinforcing agent for permeable concrete. The set retarding reinforcing agent is characterized in that the set retarding reinforcing agent comprises, by weight,5-8% of water reducing agents, 3-5% of set retarders, 10-15% of mineral powder, 20-28% of anti-crack components, 5-8% of air entraining agents, 15-20% of silicon dioxide, 5-8% of water-retaining agents and 20-30% of spherical inorganic substance materials; the spherical inorganic substance materials comprise, by weight, 58% of calcium oxide, 22% of silicon dioxide, 5.5% of aluminum trioxide, 3.5%of sodium oxide and 11% of quartz sand. The set retarding reinforcing agent has the advantages that the excellent flowability and workability of permeable concrete grout can be kept in the time of approximately 2.5 h when the set retarding reinforcing agent is used, and long-acting water retention effects can be realized.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to a retarding enhancer for permeable concrete and a preparation method thereof. Background technique [0002] Permeable concrete has good water permeability, high water storage capacity and good decoration. It is a new type of material worth promoting in the construction of "sponge city". Permeable concrete is not mixed with fine aggregate, and is made by mixing cementitious material, coarse aggregate, admixture and water in a certain proportion, and is called sand-free permeable concrete. The characteristic of permeable concrete is that it does not contain fine aggregate, and single-size coarse aggregate is used as the skeleton. A thin layer of cement slurry is wrapped on the surface of the coarse aggregate particles, which acts as a cementing layer between the aggregate particles to form a skeleton-pore structure. porous concrete material. For example, patent 10816...

AI Technical Summary

Problems solved by technology

However, when the permeable concrete in this invention is transported over a long distance and stirred for a long time, the water content of the concrete that has been stirred for a long time will lose a lot, the heat of hydration time will be prolonged, the slurry of the concrete will be thickened, and the fluidity of the concrete will be severely damaged. , the slurry itself loses its working performance and will gradually sink to the bottom

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