Low-contraction, high-temperature-resistant, and high-strength resin concrete and preparation method thereof

Abstract

The invention provides a low-contraction, high-temperature-resistant, and high-strength resin concrete and a preparation method thereof. The resin concrete comprises following components in percentageby weight: 8.0 to 15.0% of a resin system, 45.0% to 51.0% of broken stone, 20.0 to 38.0% of sand, 2.0 to 7.0% of fly ash, 0.5 to 3.0% of a heatproof filling material, 0.0 to 5.0% of waste rubber particles, 0.2 to 2.0% of waste rubber powder, and 0.1 to 6.0% of chopped fibers. By adding waste rubber particles and waste rubber powder, the curing and contraction of the resin concrete in the early stage are prevented; the curing time of resin in the resin concrete is prolonged; the stress relaxation of the resin concrete is improved; under a constraint condition, the contraction strain of concrete is reduced, and the non-loaded cracks of the resin concrete are prevented in the early stage. The vibration-resistant performance and energy-absorbing performance of the resin concrete are improved.The problem of unstable volume due to the large curing-shrinkage of the resin concrete in the early stage is solved. Large-scale and large-volume casting of the resin concrete in a project can be realized. The resin concrete can replace cement concrete in some engineering projects, which have high requirements on high temperature resistant performance, waterproof performance, corrosion resistantperformance, and durability, such as desulfurization towers, high temperature chemical liquid ponds, and the like.

Description

technical field [0001] The invention relates to concrete, in particular to a low-shrinkage and high-temperature-resistant high-strength resin concrete and a preparation method thereof. Background technique [0002] In some projects such as desulfurization towers of thermal power plants, the service environment of concrete is harsh, with the characteristics of high temperature and strong corrosive acids and salts. Although the concrete structure is treated with anti-corrosion, the durability of the anti-corrosion layer is insufficient. Falling off, so that the durability of the desulfurization tower structure can no longer meet the needs of the project. Resin concrete refers to concrete made of resin as a cementitious material. Compared with cement concrete, it has the characteristics of lighter weight and stronger corrosion resistance. Therefore, it has a very broad application prospect in corrosive environments such as desulfurization tower anti-corrosion coatings in power...

AI Technical Summary

Problems solved by technology

However, so far, there are few studies on the early cure shrinkage of resin concrete.

In addition, most resins have the characteristics of poor high temperature resistance, and the resin concrete used as the anti-corrosion layer in the desulfurization tower must consider its high temperature resistance, and the research on the high temperature resistance of resin concrete is still in its infancy

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