A kind of permeable concrete reinforcing agent and preparation method thereof

Abstract

The invention discloses a pervious concrete reinforcing agent. The pervious concrete reinforcing agent comprises, by weight, 7-15 parts of sodium nitrite, 5-11 parts of a polycarboxylate superplasticizer, 55-71 parts of silica fume, 12-20 parts of calcium sulfate whiskers, 1-3 parts of an alkylol amine compound and 1-3 parts of a cellulose water-retaining material. The pervious concrete reinforcing agent greatly improves the compressive strength and the wear resistance of the obtained concrete on the premise of guaranteeing the good water permeability of pervious concrete, and expands the application field of the pervious concrete; the pervious concrete reinforcing agent saves 14-18% of the use amount of cement on the premise of guaranteeing the same strength grade, and has significant economic and environmental benefits; and the reinforcing agent greatly improves the performances of the pervious concrete when applied to the production of the pervious concrete, effectively solves a series of urban rainwater drainage problems, is suitable for being used as a sponge city building material, and has great social benefits.

Description

technical field [0001] The invention belongs to the technical field of concrete admixtures, and in particular relates to a permeable concrete reinforcing agent and a preparation method thereof. Background technique [0002] In recent years, many cities have experienced frequent waterlogging problems, and the impermeable pavement used in cities is one of the important reasons for urban waterlogging. When heavy rain occurs, the rainwater cannot penetrate naturally, but quickly forms surface runoff and flows to the low-lying areas. Due to the limitation of the drainage capacity of underground drainage pipes, the low-lying areas of some large cities in my country have formed a strange circle of "every heavy rain will flood the areas". Urban waterlogging is rare in developed countries. On the one hand, due to reasonable planning and strong drainage capacity of underground pipe networks, on the other hand, the widespread use of permeable pavements has also relieved the pressure on...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of permeable concrete reinforcing agent for the existing problems of permeable concrete such as insufficient strength and substandard water permeability, which can be applied to the preparation of permeable concrete. On the basis of ensuring good water permeability of permeable concrete, it can Greatly improve the compressive strength and wear resistance of concrete, realize the synchronous improvement of the strength performance and water permeability of permeable concrete; and can effectively reduce the amount of cement added; and the raw materials involved are wide in source and the preparation method is simple, which has important economic and social benefit

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