Environment-friendly high-strength high-durability airport pavement concrete

Abstract

The invention relates to an environment-friendly high-strength high-durability airport pavement concrete, which is prepared by stirring the following constituents in percentage by weight: 26-27% of Dongchuan river sand, 55-56% of centimeter stone, 11-13% of cement, 5-6% of water and 0.20-0.31% of additive. The Dongchuan river sand is the river sand formed in a manner that mud-rock flows formed by rain wash of weathered rocks on the surface layers of the mountain bodies in small river valley of Dongchuan district and surrounding area are deposited in river channels. Large amounts of river sands in the mud-rock flows are utilized, so the concrete is environment-friendly, safe and lower in selecting and purchasing cost. The concrete is reasonable in formula, simple to prepare, excellent in performance, high in strength, good in durability and good in construction performance, and can meet the requirements on folding resistance, wear resistance and no appearance defect.

Description

technical field [0001] The invention relates to the technical field of building materials, mainly the technical field of concrete. Background technique [0002] At present, due to the rapid development of the construction industry, the demand for raw materials such as sand and gravel for the preparation of concrete has also increased rapidly, resulting in the massive mining of limestone mines and quartz sand mines, which has brought about increasingly serious environmental damage problems. Therefore, in building materials, especially During the use and use of concrete and related materials, how to find new alternative materials to reduce the damage to resources and environment has attracted more attention. [0003] In the Xiaojiang River Basin in Dongchuan District, Kunming City, Yunnan Province and its surrounding areas, severe debris flows are formed every year due to the weathering of mountain surface rocks and erosion by rainwater. The river sand (nominal particle size l...

AI Technical Summary

Problems solved by technology

[0005] In the application of Dongchuan river sand, due to the existing technology, no reasonable technical solution has been developed when using Dongchuan river sand to make concrete, and there is a lack of systematic research proof, which makes the trial-manufactured concrete have quality risks and easily cause quality disputes , which makes Dongchuan river sand can only be limited to a limited area, and cannot be widely used and promoted through the application in concrete, which seriously hinders the use of Dongchuan river sand concrete in building construction