A zero-constrained shrinkage and high corrosion-resistant lightweight resin concrete and its preparation method

A resin concrete, lightweight technology, applied in the direction of ceramic products, applications, sustainable waste treatment, etc., can solve problems such as easy cracks, achieve the effects of reducing early curing shrinkage, increasing stress relaxation, and reducing shrinkage

Active Publication Date: 2022-05-20
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 a light resin concrete with zero constraint shrinkage and high corrosion resistance and a preparation method thereof, which is composed of the following components by weight: resin system (including resin, curing agent, accelerator, and an appropriate amount of diluent is added according to the viscosity of the resin) )10.0%~18.0%, lightweight porous coarse aggregate 40.0%~48.0%, sand 15.0%~32.0%, fly ash 4.0%~9.0%, waste rubber particles 2.0%~15.0%, waste rubber powder 0.2%~ 2.0% and chopped fiber 0.1 to 8.0%. The invention mixes waste rubber particles, waste rubber powder and lightweight aggregate, which can reduce the early free shrinkage of resin concrete and shrinkage under restraint conditions; prolong the curing time of resin in resin concrete, increase the stress relaxation of resin concrete, and greatly The amplitude reduces the shrinkage strain of concrete under constraint conditions and eliminates the early non-load cracks of resin concrete, solves the volume instability problem caused by the early curing shrinkage of resin concrete, and also improves the anti-vibration and energy absorption characteristics of resin concrete.

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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Patent Type & Authority Patents(China)
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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