Low-shrinkage, high-corrosion-resistance and high-strength resin concrete and preparation method thereof

A high-strength resin, low-shrinkage technology, used in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of large early curing shrinkage of resin concrete, and solve the problem of unstable concrete volume and reduce curing shrinkage value. , the effect of prolonging the curing time

Active Publication Date: 2020-02-04
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-shrinkage high-corrosion-resistant high-strength resin concrete and its preparation method to solve the serious shrinkage problem caused by the resin in the resin concrete mentioned in the background technology accounting for about 1 / 5 of the concrete volume , to solve the problem of large early curing shrinkage of resin concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] A low-shrinkage high-corrosion-resistant high-strength resin concrete and a preparation method thereof, comprising the steps of:

[0025] S1: Carry out close packing experiments and theoretical calculations of aggregates to determine the dosage of various aggregates;

[0026] S2: Put the coarse aggregate, sand, fly ash, waste rubber particles and waste rubber powder into the drying box to dry, after cooling, accurately weigh the coarse aggregate, sand and various fillers, and then mix and stir evenly;

[0027] S3: Calculate the amount of resin according to the accumulation of aggregates. Accurately weighed resin, accelerator and curing agent are stirred for 2 to 10 minutes and mixed evenly;

[0028] S4: Pour the uniformly mixed coarse aggregate, sand, fly ash, waste rubber particles, waste rubber powder and chopped fibers into the mixer and continue stirring for 2 to 8 minutes. High-strength resin concrete with high shrinkage and high corrosion resistance.

Embodiment 1

[0031] Resin system 10.0%, gravel 50.0%, sand 32.6%, fly ash 6.0%, waste rubber granules 1.0%, waste rubber powder 0.2% and chopped fibers 0.2%.

[0032] The preparation method is to put the coarse aggregate, sand, fly ash, waste rubber particles and waste rubber powder into the drying box to dry, and after cooling to room temperature, accurately weigh the coarse aggregate, sand and various fillers, and then stir and mix Uniform; Stir the resin, accelerator and curing agent for 5 minutes and mix evenly; Pour the mixed aggregate, filler and chopped fiber into the mixer and continue to stir for 5 minutes. After stirring evenly, the low shrinkage and high corrosion resistance High-strength resin concrete.

Embodiment 2

[0034] Resin system 11.0%, gravel 49.0%, sand 31.4%, fly ash 6.0%, waste rubber granules 2.0%, waste rubber powder 0.4% and chopped fiber 0.2%.

[0035] The preparation method is to put the coarse aggregate, sand, fly ash, waste rubber particles and waste rubber powder into the drying box to dry, and after cooling to room temperature, accurately weigh the coarse aggregate, sand and various fillers, and then stir and mix Uniform; Stir the resin, accelerator and curing agent for 5 minutes and mix evenly; Pour the mixed aggregate, filler and chopped fiber into the mixer and continue to stir for 5 minutes. After stirring evenly, the low shrinkage and high corrosion resistance High-strength resin concrete.

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Abstract

The invention provides a low-shrinkage, high-corrosion-resistance and high-strength resin concrete and a preparation method thereof. The concrete comprises 8.0-15.0% of a resin system, 45.0-52.0% of gravels, 20.0-36.0% of sand, 3.0-8.0% of fly ash, 0.5-10.0% of waste rubber particles, 0.2-2.0% of waste rubber powder and 0.1-6.0% of chopped fibers. The waste rubber particles and the waste rubber powder are added to reduce early curing shrinkage of the resin concrete; and the curing time of resin in the resin concrete is prolonged, the stress relaxation of the resin concrete is increased, the shrinkage strain of the concrete under a constraint condition is reduced, the early-stage non-load crack of the resin concrete is avoided, the vibration resistance and the energy absorption property ofthe resin concrete are improved, the problem of volume instability caused by large early curing shrinkage of the resin concrete is solved, large-area and large-volume pouring of the resin concrete inengineering can be achieved, and the resin concrete can be applied to engineering with high requirements for water resistance, corrosion resistance and durability, such as swimming pool walls and sewage treatment pools, and engineering needing vibration resistance, such as machine tool foundations, to replace cement concrete.

Description

technical field [0001] The invention relates to a low-shrinkage and high-corrosion-resistant high-strength resin concrete and a preparation method thereof, which belong to the related technical field of concrete. Background technique [0002] In industrial sewage, domestic sewage, chemical pools and acid pools, there are various substances that cause corrosion to cement concrete, such as chloride ions, sulfate ions, biological acids, strong acids, etc., which will shorten the service life of reinforced concrete. The pool walls built with cement concrete all need surface treatment, such as painting anti-corrosion paint, pasting anti-corrosion bricks and other anti-corrosion measures to protect the concrete from the erosion of corrosive substances in the pool. The deformation of the concrete surface is inconsistent under the action of external temperature, humidity and load, etc., which can easily lead to the detachment of the coating from the concrete surface. At the same tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/18C04B26/14C04B26/12C04B26/10C04B111/26C04B111/34
CPCC04B26/18C04B26/14C04B26/105C04B26/122C04B2111/26C04B2111/34C04B2201/50C04B18/12C04B14/068C04B14/06C04B18/08C04B18/22C04B14/42C04B14/46C04B14/48C04B14/386C04B16/0633C04B20/0068Y02W30/91
Inventor 吕建福张亚杰熊磊马小兵沈亦农黄建涛
Owner HARBIN ENG UNIV
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