Dongchuan river sand concrete

Abstract

The invention relates to Dongchuan river sand concrete. The Dongchuan river sand concrete is prepared through the following method: mixing and stirring raw materials to obtain the Dongchuan river sand concrete, wherein the raw materials comprise, by mass, 24.4-36.2% of Dongchuan river sand, 44.8-45.8% of crushed stone, 5.4-16.9% of cement, 3.0-4.8% of fly ash, 1.0-2.3% of slags, 6.8-8.3% of water and 0.1-0.6% of an additive. In the Dongchuan district of Kunming city of Yunnan province, and Xiaojiang watershed surrounding the Dongchuan district, surface rocks of the mountains are weathered and eroded through rain water to form debris flow, which is deposited in the river to form the Dongchuan river sand. According to the present invention, a large amount of the Dongchuan river sand are adopted, the method has characteristics of environmental protection, safety and low mining cost; the formula is reasonable; the preparation method is simple; the prepared Dongchuan river sand concrete has characteristics of excellent performance, high strength, good durability and good construction performance, and further provides broad application space for development and utilization of the Dongchuan river sand.

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