Ecological and environmental protection type pervious concrete prepared from waste concrete

Abstract

The invention discloses ecological and environmental protection type pervious concrete prepared from waste concrete. The pervious concrete is prepared from raw materials in percentage by weight as follows: 65.5%-79.5% of recycled aggregate composition, 1.2%-2.4% of recycled concrete micro-powder, 14-19.5% of cement, 2.4%-4.8% of granulated ferrochrome slag powder, 0.1%-0.3% of a water reducing agent, 0.1%-0.3% of a modifier, 0.1%-0.2% of Welan gum and the balance of water. According to the ecological and environmental protection type pervious concrete, a large quantity of construction garbage and waste residues are consumed, exploitation of natural resources is reduced, the cost is reduced, the added economic value of the construction garbage and the waste residues is increased, development of the construction garbage resource treatment and utilization industry is promoted, and the concrete has the significant economic benefit and social benefit; the modifier and the Welan gum are used, the reactivity of aggregate and an additive in the pervious concrete is improved, and the strength of the concrete is significantly improved on the premise that the permeability performance is guaranteed.

Description

technical field [0001] The invention relates to a permeable concrete, in particular to an ecological environment-friendly permeable concrete prepared by using waste concrete. Background technique [0002] As a new type of pavement paving material with high permeability, permeable concrete has good ecological and environmental benefits. Due to the continuous expansion of modern cities, large areas of forests, grasslands and cultivated land have been destroyed, and the original virtuous cycle of biological ecosystems has been seriously damaged, and the pavement of large areas of impermeable and airtight traditional concrete water-blocking pavement materials , causing great pressure on the virtuous cycle of the urban ecological environment. The increasingly serious urban "heat island effect" has a serious impact on the exchange of water, air and heat in the city. Due to the dense urban buildings, the asphalt pavement and concrete cement pavement absorb a lot of heat during the...

AI Technical Summary

Problems solved by technology

[0005] Ferrochrome slag is chromium-containing waste slag produced during pyrochrome smelting of ferrochrome alloys. At present, the utilization rate of ferrochrome slag is low, resulting in a large amount of accumulation in the slag yard, which not only encroached on a large number of fertile fields, but also polluted groundwater and soil, endangering people and animals in runoff areas. Safety, but also caused a lot of waste of waste resources