High-porosity epoxy resin pervious concrete

Abstract

The invention provides high-porosity epoxy resin pervious concrete, which comprises the following components in part by mass: 100 parts of epoxy resin, 0-50 parts of reactive diluent, 20-80 parts of curing agent, 2,000-10,000 parts of aggregate and 0-30 parts of dye. The invention has the beneficial effects that (1) the pervious concrete with porosity of greater than 40% is prepared by using the epoxy resin as gel material; (2) the pervious concrete the maximum breaking strength of which is 12 MPa can be prepared, which can bear relatively large impact load and prevent the aggregate from falling compared with the cement-based pervious concrete; (3) when the steel slag is used as the aggregate, the steel slag can be used without special treatment; and (4) the pervious concrete with variouscolors can be prepared by adding the dye.

Description

technical field [0001] The invention relates to a permeable concrete, in particular to a permeable concrete with epoxy resin as a cementitious material. Background technique [0002] With the continuous improvement of the level of urbanization, more and more urban grounds are covered by dense and impermeable concrete, which prevents rainwater from seeping into the ground, forming pavement water and affecting the replenishment of urban groundwater, resulting in ecological imbalance. . Permeable concrete is a new type of concrete born to make up for the impermeability of ordinary concrete. It is an ecological and environmentally friendly concrete. It is different from ordinary concrete in that it has a certain compressive strength and water permeability. Chinese invention patent CN101190833A discloses a permeable concrete and a manufacturing method thereof. The method uses cement as the cementitious material and natural stones or slag waste as the aggregate. [0003] Steel s...

AI Technical Summary

Problems solved by technology

Chinese invention patent CN1891654A discloses a kind of permeable concrete using steel slag as aggregate, but there is a requirement for free calcium oxide in steel slag, and the content cannot exceed 5%, which determines that its steel slag utilization area is very narrow

[0005] Generally, the preparation of permeable concrete uses cement as the cementitious material, and its porosity is generally below 20%. Although it has good compressive strength, because the bonding ability of cement to aggregate is very weak, the prepared permeable concrete is resistant to The bending strength is relatively low, and the aggregate will fall off after being impacted or used for a period of time, resulting in uneven road surface

At the same time, because the cement itself is colored, it is very difficult to adjust the color of the permeable concrete prepared with cement