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A kind of cement concrete with high slump retention and high strength and preparation method thereof

A cement concrete and high-strength technology, applied in the field of building materials, can solve problems such as the influence of concrete setting time, unfavorable concrete water-cement ratio, and damage to the good gradation of sand, and achieve the effect of promoting dust suppression, improving compressive strength, and reducing slump The effect of drop loss

Active Publication Date: 2021-12-24
合江县天佳建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, washing is easy to cause environmental pollution and damage the good gradation of sand, which is not conducive to effectively controlling the water-cement ratio of concrete, and also increases the production cost of concrete; increasing the amount of polycarboxylate superplasticizer also improves the concrete. Production cost; also starting from the polycarboxylate water reducer itself, using hydroxyethyl acrylate and white sugar to develop a mud-resistant polycarboxylate slump-retaining agent, the white sugar is preferentially absorbed by the soil particles, resulting in the adsorption of the soil to the polycarboxylate reduce the mud resistance, but the addition of white sugar increases the cost of the admixture formula on the one hand, and on the other hand has a serious impact on the setting time of concrete in winter

Method used

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  • A kind of cement concrete with high slump retention and high strength and preparation method thereof
  • A kind of cement concrete with high slump retention and high strength and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high-slump high-strength cement concrete, comprising 200 parts of cement, 700 parts of medium sand, 600 parts of gravel, 60 parts of admixture, 4 parts of admixture and 140 parts of water by mass; the admixture includes 1 part of anti-mud agent, 3 parts of polycarboxylate superplasticizer and 1 part of calcium chloride.

[0026] The admixture is coal ash.

[0027] The anti-mud agent is composed of fluorocarbon surfactant, calcium stearate and hexametaphosphoric acid, and the mass ratio is 3:1:2.

[0028] The polycarboxylate superplasticizer is prepared from polycarboxylate water-reducing mother liquor, polycarboxylate slump-preserving mother liquor, sodium lauryl sulfate, glucose sulfonate and water, with a mass ratio of 350:80 :5:1:500.

Embodiment 2

[0030] A high-slump high-strength cement concrete, comprising 500 parts of cement, 1100 parts of medium sand, 1100 parts of gravel, 150 parts of admixture, 10 parts of admixture and 200 parts of water by mass; the admixture includes 2 parts of anti-mud agent, 6 parts of polycarboxylate superplasticizer, 2 parts of calcium chloride.

[0031] The admixture is coal ash.

[0032] The particle size of the gravel is 20-30mm.

[0033] The anti-mud agent is composed of fluorocarbon surfactant, calcium stearate and hexametaphosphoric acid, and the mass ratio is 3:1:2.

[0034] The polycarboxylate superplasticizer is prepared from polycarboxylate water-reducing mother liquor, polycarboxylate slump-preserving mother liquor, sodium lauryl sulfate, glucose sulfonate and water, with a mass ratio of 350:80 :5:1:500.

Embodiment 3

[0036] A high-slump high-strength cement concrete, comprising 240 parts of cement, 1000 parts of medium sand, 940 parts of gravel, 70 parts of admixture, 5 parts of admixture and 155 parts of water by mass; the admixture includes 1-2 parts of anti-mud agent, 3-6 parts of polycarboxylate superplasticizer, 1-2 parts of calcium chloride.

[0037] The admixture is coal ash.

[0038] The particle size of the gravel is 20-30mm.

[0039] The anti-mud agent is composed of fluorocarbon surfactant, calcium stearate and hexametaphosphoric acid, and the mass ratio is 3:1:2.

[0040] The polycarboxylate superplasticizer is prepared from polycarboxylate water-reducing mother liquor, polycarboxylate slump-preserving mother liquor, sodium lauryl sulfate, glucose sulfonate and water, with a mass ratio of 350:80 :5:1:500.

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Abstract

The invention discloses a cement concrete with high slump retention and high strength, which comprises, by mass, 200-500 parts of cement, 700-1100 parts of medium sand, 600-1100 parts of gravel, 60-150 parts of admixture, and 4 parts of admixture -10 parts and 140-200 parts of water; the admixtures include 1-2 parts of anti-mud agent, 3-6 parts of polycarboxylate superplasticizer, and 1-2 parts of calcium chloride. By adding anti-mud component and polycarboxylate superplasticizer, it has obvious anti-mud effect, significantly reduces the slump of concrete, and the strength of concrete is high.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to cement concrete with high slump retention and high strength. Background technique [0002] While the construction industry is constantly developing, it also has higher requirements for its own quality. Concrete is the most widely used construction material in construction engineering. It plays a great role in the safety, reliability and durability of buildings. Its construction quality has a great impact on the safety performance and service life of the entire building. . Therefore, controlling the quality of concrete has a great effect on improving the construction quality of construction projects. [0003] Concrete is a building material made by mixing cement, fine aggregate, coarse aggregate, and water in a certain proportion. To obtain good concrete construction quality, the quality of raw materials must first be ensured to prepare better quality conc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/02C04B111/20C04B111/27
CPCC04B28/02C04B2201/50C04B2111/27C04B2111/2092C04B2111/00293C04B14/06C04B14/02C04B24/005C04B24/085C04B22/165C04B18/08C04B18/103C04B22/124C04B24/16C04B2103/302
Inventor 唐家熙
Owner 合江县天佳建材有限公司
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