High-performance concrete prepared from recycled slurry

Abstract

The invention discloses high-performance concrete prepared from recycled slurry water. The concrete comprises the following components in parts by weight: 135-225 parts of cement, 8-12 parts of micropowder, 80-100 parts of coal ash, 750-900 parts of gravels, 500-750 parts of machine-made sand, 120-150 parts of water, 70-120 parts of slurry and 8-12 parts of an additive. The additive is prepared from the following raw materials in percentage by mass: 76% of a slump retaining agent, 6% of an expanding agent, 8% of a retarder and 10% of deionized water. By adjusting the ratio, the bleeding rateof the concrete is reduced. Meanwhile, the bleeding rate is reduced, the viscosity of the concrete is improved, and the segregation resistance is improved.

Description

technical field [0001] The invention relates to the technical field of concrete construction, in particular to a high-performance concrete prepared by utilizing recycled slurry water. Background technique [0002] Due to the current shortage of natural river sand in the market, in response to the sustainable development strategy, local governments are vigorously promoting the use of crushed stone machine-made sand instead of natural river sand. However, when crushed stone machine-made sand is used to make concrete, it is easy to cause unstable concrete quality, bleeding and segregation, resulting in poor workability of concrete, poor concrete pumping performance and other properties, and short pumping distance. , And then cause a series of problems such as pump pipe blockage. In addition, in the process of concrete production, a large amount of waste slurry water is produced, which needs to be recycled and reused. However, most of the existing technologies are only applicab...

AI Technical Summary

Problems solved by technology

However, when crushed stone machine-made sand is used to make concrete, it is easy to cause unstable concrete quality, bleeding and segregation, resulting in poor workability of concrete, poor concrete pumping performance and other properties, and short pumping distance. , and then cause a series of problems such as pump tube blockage

In addition, in the process of concrete production, a large amount of waste slurry water is produced, which needs to be recycled and reused. However, most of the existing technologies are only applicable to concrete prepared from natural sand and gravel, and there are few studies on concrete applied to machine-made sand and gravel.

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