High-strength permeable concrete and method for preparing same

Abstract

The invention discloses high-strength permeable concrete and a method for preparing the same. The high-strength permeable concrete comprises, by weight, 30-40 parts of coarse aggregate, 20-30 parts ofsulphoaluminate cement, 5-10 parts of converter steel slag, 2-4 parts of calcined meta-bentonite powder, 4-8 parts of fly ash, 1-3 parts of silicon powder, 3-8 parts of iron tailings sand, 4-8 partsof ceramsite, 2-5 parts of coal gangue powder, 2-8 parts of reinforcing fibers, 2-5 parts of sodium silicate, 2-4 parts of bauxite, 0.5-1.5 parts of adhesion agents, 0.3-0.8 part of water reducing agents, 1-3 parts of gel and 0.1-0.5 part of dispersing agents. The high-strength permeable concrete and the method have the advantages that the high-strength permeable concrete is excellent in permeability performance, strength and frost resistance, and the method is simple, is easy to implement and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of road paving materials, in particular to a high-strength permeable concrete and a preparation method thereof. Background technique [0002] With the development of social economy and the continuous improvement of urbanization level, more and more urban surfaces are gradually covered by reinforced concrete buildings and impervious roads. Compared with natural soil, concrete pavement lacks the ability to breathe, absorb heat, and infiltrate rainwater, resulting in the inability of rainwater to penetrate into the ground, forming a large amount of water on the pavement and affecting the replenishment of urban groundwater, causing damage to the ecological environment. [0003] Permeable concrete is a new type of concrete born to make up for the impermeability of ordinary concrete. It is an environmentally friendly and ecological concrete material with water permeability and air permeability. It is mainly compos...

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Problems solved by technology

[0004] However, the strength of permeable concrete currently on the market is low, which cannot meet the requirements for laying high-performance pavements; the water permeability coefficient is low, generally lower than 10mm / s, which cannot meet the drainage requirements in rainy seasons, and it is easy to cause ground water phenomenon. ; In addition, ordinary permeable concrete has poor weather resistance, low freeze-thaw resistance, and is prone to freeze-thaw damage, which seriously hinders the application and development of permeable concrete