A kind of sponge city ecological permeable pavement brick and preparation method thereof

Abstract

The invention discloses a sponge city ecological permeable pavement brick. The pavement brick comprises a sand-based surface layer and a cement concrete structure layer. The sand-based surface layer comprises the following components in parts by weight: coated sand 50-100 8-12 parts of polyethersulfone resin, 2-4 parts of glass fiber, 20-30 parts of epoxy resin, 5-10 parts of alkali lignin. The cement concrete structure layer comprises the following components in parts by weight: 60-80 parts of cement, 50-75 parts of fly ash, 80-100 parts of quartz sand, 20-40 parts of turpentine rock powder, and 1 part of yellow dextrin ‑6 parts, polypropylene fiber 5‑10 parts, water reducing agent 1‑4 parts, water 40‑50 parts. The invention also discloses a preparation method of the ecological permeable pavement brick. The pavement brick prepared by the method has excellent water permeability, good wear resistance and antiskid performance, high flexural compressive strength, good high temperature resistance and low preparation cost.

Description

Technical field: [0001] The invention relates to the field of building materials, in particular to a sponge city ecological permeable pavement brick. Background technique: [0002] With the development of the economy, the surface of modern cities is more and more covered by buildings and concrete. This "hardening" of the surface makes it difficult for atmospheric precipitation to penetrate into the ground in time, and the surface runoff increases, forming the "heat island effect". As well as environmental problems such as waterlogging and urban surface subsidence caused by insufficient drainage. As an environmental material, porous permeable bricks are applied to the paving of roads and squares, which can allow part of the precipitation to infiltrate into the ground and reduce surface runoff, thus better solving the above problems. [0003] In my country, the total area of ​​desert is about 637,000 km 2 , Accounting for about 6.8% of the country's land, mainly distributed ...

AI Technical Summary

Problems solved by technology

The application of desert sand to the preparation of permeable bricks has gradually attracted attention, but the current permeable bricks made of desert sand have insufficient compressive strength, are easy to crack, and have poor flexural properties.