Water-resistant dispersion concrete and preparation method thereof

Abstract

The invention belongs to the technical field of building materials, and particularly relates to water-dispersion-resistant concrete and a preparation method thereof, and the water-dispersion-resistant concrete comprises the following components by weight: 300-600 parts of cement; 60 to 200 parts of fly ash; 600 to 800 parts of recycled fine aggregate; 800 to 1100 parts of recycled coarse aggregate; 100 to 200 parts of regenerated micro powder; 5-15 parts of a water reducing agent; 100 to 200 parts of metakaolin; 160 to 240 parts of a modified nano silicon oxide dispersion liquid; 3 to 10 parts of organosilane; 1-5 parts of polyvinyl alcohol; 5 to 15 parts of polymethyl acrylate; 3 to 5 parts of triethanolamine; 1 to 3 parts of polyacrylamide; 1-5 parts of polyethylene glycol and 0-6 parts of synthetic fiber. The water-resistant dispersion concrete provided by the invention realizes direct pouring of concrete in water, no segregation when encountering water, no loss of cement, self-leveling and self-compacting when entering water, no need of vibration, no environmental pollution to construction water areas, uniform and reliable concrete quality, and significant positive influence on durability, workability and cost control of underwater concrete.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to concrete, in particular to a water-resistant dispersion concrete and a preparation method thereof. Background technique [0002] So far, in underwater engineering, concrete is still one of the most important and largest building materials. The performance of concrete will directly affect the quality and progress of underwater projects. When ordinary concrete is directly poured in a water environment, it will be affected by water, resulting in separation, cement loss, strength decline, and environmental pollution. The cofferdam water isolation method is usually used to solve the problem of underwater pouring of concrete, but this method will complicate the construction process, lengthen the construction period, greatly increase the project cost, and it is difficult to ensure the quality of underwater concrete. [0003] In view of the defects existing in the above-mention...

AI Technical Summary

Problems solved by technology

When ordinary concrete is poured directly in a water environment, it will be affected by water and cause separation, cement loss, and strength decline and cause environmental pollution.

The cofferdam water isolation method is usually used to solve the problem of underwater concrete pouring, but this method will make the construction process more complicated, the construction period will be longer, the project cost will be greatly increased, and it is difficult to ensure the quality of underwater concrete

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