Lightweight water-permeable concrete containing ceramsite

Abstract

The invention relates to lightweight water-permeable concrete containing ceramsite, and belongs to the field of building materials. The concrete is prepared from, by mass (kg / m<3>), 130-150 parts of mixing water, 410-450 parts of cement, 990-1000 parts of the ceramsite and 1.11-1.80 parts of additives, wherein the ceramsite is continuous grading coal gangue ceramsite with the particle sizes ranging from 5 mm to 10 mm, the ceramsite is shaped like a sphere, the stacking density grade of the coal gangue ceramsite ranges from 900 kg / m<3> to 950 kg / m<3>, the close stacking density ranges from 980 kg / m<3> to 1030 kg / m<3>, and the apparent density ranges from 1700 kg / m<3> to 1800 kg<3>. According to the water-permeable concrete, a larger amount of the coal gangue ceramsite which is formed by sintering the byproduct coal gangue raw materials in the coal mining process is used, the water-permeable concrete is excellent in performance, high in permeation coefficient, excellent in strength, low in weight per unit volume and low in price, the requirement of the concrete for natural stone is reduced, and a positive effect on solving solid emissions and atmospheric pollution is achieved.

Description

technical field [0001] The invention relates to building materials, in particular to a lightweight, permeable concrete. Background technique [0002] Permeable concrete is an eco-friendly concrete with continuous voids, which is prepared by a special process with specific gradation of cement, water, aggregates, admixtures, etc. according to a specific mix ratio. Compared with ordinary concrete, its apparent density, permeable concrete has many excellent performances such as water permeability, air permeability, water purification, sound absorption and noise reduction, protection of groundwater resources, mitigation of urban heat island effect and improvement of soil ecological environment. Therefore, under the guidance of strategic ideas such as sustainable development and maintaining ecological balance, some developed countries such as Japan, South Korea, Europe and the United States began to design, research and develop pervious concrete more than 50 years ago. Its mix ra...

AI Technical Summary

Problems solved by technology

Most of the precipitation can only be discharged through the city's drainage system, which not only increases the burden on the city's drainage system, but also easily causes the problem of water accumulation on urban roads, which brings great troubles to people's daily travel. The lack of proper replenishment will cause the groundwater level to drop and drought disasters to occur frequently