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A low-shrinkage and high-temperature-resistant high-strength resin concrete and its preparation method

A high-strength resin and high-temperature-resistant technology, applied in the field of concrete, can solve the problems of resin concrete with little early curing shrinkage and poor high-temperature resistance, and achieve the effects of prolonging curing time, solving volume instability, and increasing stress relaxation

Active Publication Date: 2022-05-20
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • A low-shrinkage and high-temperature-resistant high-strength resin concrete and its preparation method

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with specific embodiments.

[0019] A low-shrinkage and high-temperature-resistant high-strength resin concrete of the present invention is composed of the following components by weight: resin system (including resin, curing agent, accelerator) 8.0%-15.0%, gravel 45.0%-51.0%, sand 20.0% to 38.0%, fly ash 2.0% to 7.0%, heat-resistant filler 0.5% to 3.0%, waste rubber particles 0.0% to 5.0%, waste rubber powder 0.2% to 2.0%, and chopped fiber 0.1% to 6.0% %. The resin is a high-temperature-resistant resin with a heat-resistant deformation temperature > 140°C; the maximum particle size of the stones is no more than 30mm, and the gradation is good; the sand is river sand and machine-made sand (the parent rock is generally granite , basalt) or one or more of desalinated sea sand, etc., and the gradation is good; the fly ash is Class II fly ash and Class I fly ash. The high temperature resistant...

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Abstract

The invention provides a low-shrinkage and high-temperature-resistant high-strength resin concrete and a preparation method thereof, comprising: 8.0% to 15.0% of resin system, 45.0% to 51.0% of gravel, 20.0% to 38.0% of sand, and 2.0% to 7.0% of fly ash %, 0.5% to 3.0% of heat-resistant filler, 0.0% to 5.0% of waste rubber particles and 0.2% to 2.0% of waste rubber powder, and 0.1% to 6.0% of chopped fibers. The invention can reduce the early curing shrinkage of resin concrete by adding waste rubber particles and waste rubber powder; prolong the curing time of resin in resin concrete, increase the stress relaxation of resin concrete, reduce the shrinkage strain of concrete under constraint conditions and eliminate resin concrete Early non-load cracks improve the anti-vibration and energy-absorbing properties of resin concrete, and solve the volume instability problem of resin concrete caused by large early curing shrinkage; it can realize large-area and large-volume pouring of resin concrete in projects, It can replace cement concrete and be used in desulfurization towers, high-temperature liquid chemical pools and other projects that require high temperature resistance, waterproof, corrosion resistance and durability.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/04C04B26/14C04B26/10C04B111/20C04B111/27C04B111/28
CPCC04B26/04C04B26/14C04B26/105C04B2201/52C04B2111/28C04B2111/27C04B2111/20C04B14/02C04B18/08C04B14/14C04B14/048C04B14/068C04B18/141C04B18/16C04B14/303C04B18/22C04B14/42C04B14/4656C04B16/0633C04B14/386C04B14/48C04B16/06C04B2103/0068Y02W30/91
Inventor 吕建福黄建涛沈亦农郝璠马小兵
Owner HARBIN ENG UNIV
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