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High-corrosion-resistance light resin concrete without restrained shrinkage and preparation method thereof

A resin concrete, lightweight technology, used in ceramic products, sustainable waste treatment, solid waste management, etc., can solve problems such as easy cracks, reduce early curing shrinkage, reduce shrinkage, and solve the problem of unstable concrete volume. Effect

Active Publication Date: 2020-02-11
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The early shrinkage of the current cement concrete is generally much smaller than that of resin concrete, but it is prone to cracks in the early stage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] A zero-constraint shrinkage and high corrosion-resistant lightweight resin concrete and a preparation method thereof, comprising the following steps:

[0029] S1: Carry out close packing experiments and theoretical calculations of aggregates to determine the dosage of various aggregates;

[0030] S2: Put the coarse aggregate, sand, fly ash, waste rubber particles and waste rubber powder into the drying box to dry, and after cooling, accurately weigh the coarse aggregate, sand and various fillers, and then stir and mix them evenly;

[0031] S3: Stir the resin, accelerator and curing agent for 2 to 10 minutes, and mix well;

[0032] S4: Pour the mixed aggregates, fillers and chopped fibers into the mixer and continue stirring for 2-8 minutes. After stirring evenly, a lightweight resin concrete with zero constraint shrinkage and high corrosion resistance is prepared.

Embodiment 1

[0035] Resin system 13.0%, lightweight porous coarse aggregate 43.8%, sand 32.9%, fly ash 6.8%, waste rubber particles 2.0%, waste rubber powder 1.2% and chopped fiber 0.3%.

[0036] Preparation method: put lightweight porous coarse aggregate, sand, fly ash, waste rubber particles and waste rubber powder into a drying box to dry, after cooling, accurately weigh the mass of various coarse aggregates and fillers, and then mix and stir Uniformly; then stir the resin, accelerator and curing agent for 5 minutes, and mix well; pour the mixed aggregate, filler and chopped fiber into the mixer and continue to stir for 4 minutes, after stirring evenly, a zero-constraint shrinkage high corrosion resistance lightweight resin concrete.

Embodiment 2

[0038] 14.0% resin system, 42.8% lightweight porous coarse aggregate, 32.9% sand, 6.5% fly ash, 2.0% waste rubber particles, 1.5% waste rubber powder and 0.3% chopped fiber.

[0039] Preparation method: put lightweight porous coarse aggregate, sand, fly ash, waste rubber particles and waste rubber powder into a drying box to dry, after cooling, accurately weigh the mass of various coarse aggregates and fillers, and then mix and stir Uniformly; then stir the resin, accelerator and curing agent for 5 minutes, and mix well; pour the mixed aggregate, filler and chopped fiber into the mixer and continue to stir for 4 minutes, after stirring evenly, a zero-constraint shrinkage high corrosion resistance lightweight resin concrete.

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Abstract

The invention provides high-corrosion-resistance light resin concrete without restrained shrinkage and a preparation method thereof. The high-corrosion-resistance light resin concrete comprises the following components in parts by weight: 10.0%-18.0% of a resin system (composed of resin, a curing agent and an accelerant, wherein a proper amount of a diluent is added according to the viscosity of the resin), 40.0%-48.0% of light porous coarse aggregate, 15.0%-32.0% of sand, 4.0%-9.0% of fly ash, 2.0%-15.0% of waste rubber particles, 0.2%-2.0% of waste rubber powder and 0.1%-8.0% of chopped fibers. According to the invention, the waste rubber particles, the waste rubber powder and the lightweight aggregate are doped, so early free shrinkage of the resin concrete and shrinkage of the resin concrete under constraint conditions can be reduced; the curing time of the resin in the resin concrete is prolonged; stress relaxation of the resin concrete is increased; shrinkage strain of the concrete under constraint conditions is greatly reduced; early non-load cracks of the resin concrete are eradicated; and the problem of volume instability caused by large early curing shrinkage of the resinconcrete is solved, and meanwhile, vibration resistance and energy absorption characteristics of the resin concrete are also improved.

Description

technical field [0001] The invention relates to a lightweight resin concrete with zero-constraint shrinkage and high corrosion resistance and a preparation method thereof, belonging to the related technical field of concrete. Background technique [0002] The solutions of industrial sewage, domestic sewage, chemical pools and acid pools contain a variety of substances that are corrosive to cement concrete, such as chloride ions, sulfate ions, biological acids, strong acids, etc., which seriously affect the reinforced concrete in the contact parts. durability. Due to the easy availability of cement concrete raw materials, free shape, high strength, strong fire resistance, and low cost, cement concrete has become the main building material for various civil and industrial buildings. However, due to the harshness of the service environment of these industrial sewage tanks and other projects, the surface of the concrete structure needs to be treated with anti-corrosion, such as...

Claims

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Application Information

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IPC IPC(8): C04B38/08C04B26/02C04B111/40
CPCC04B26/02C04B2201/52C04B2111/40C04B14/06C04B18/08C04B18/027C04B18/22C04B14/42C04B14/386C04B14/4643C04B14/48C04B16/0633Y02W30/91
Inventor 吕建福马小兵何雨涵黄建涛郝璠
Owner HARBIN ENG UNIV
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