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High-strength water-resistant soil consolidation agent

A soil consolidation agent, high-strength technology, applied in the field of building materials, can solve the problems of expansion cracking of concrete buildings, accelerating chemical corrosion of cement, affecting the safety and service life of buildings, etc.

Active Publication Date: 2022-04-19
重庆千变科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For a long time, it has been used as an important cementing material, widely used in civil engineering, water conservancy, national defense and other projects. In construction projects near the ocean and construction projects in saline areas, after a long period of accumulation, the concrete pores The concentration of the salt solution accelerates the chemical corrosion of the cement. At the same time, the salt crystallizes and expands in the pores, which will cause the concrete buildings made of cement to expand and crack, seriously affecting the safety and service life of the buildings.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0018] 50 parts of Portland cement, 17 parts of composite superfine powder, 2 parts of accelerator, 10 parts of polymer cellulose, 21 parts of modified polypropylene, 6 parts of alkali-free glass fiber; It is made of slag powder, fly ash, desulfurized gypsum, metakaolin, coal gangue and polydimethylsiloxane at the ratio of 20:10:10:5:12:40, and the particle size D50 of the material is below 8 μm. D95 is less than 20μm, and the specific surface area is 850-900m2 2 / kg;

[0019] Among them, the polymer cellulose is hydroxypropyl methylcellulose and polyvinyl alcohol fiber with a mass ratio of 5:2; the Portland cement is a mixture of sulphoaluminate cement and ordinary Portland cement Compound cement, sulfoaluminate cement accounts for 7-9% of the total mass of cement, and the balance is ordinary Portland cement; the alkali-free glass fiber is a powder with a diameter of 9-13 μm and a length of 30-50 μm; The quick-setting agent is prepared from sodium aluminate, sodium carbonat...

Embodiment 2

[0021] 82 parts of Portland cement, 38 parts of composite ultrafine powder, 9 parts of accelerator, 16 parts of polymer cellulose, 24 parts of modified polypropylene, 10 parts of alkali-free glass fiber; It is made of slag powder, fly ash, desulfurized gypsum, metakaolin, coal gangue and polydimethylsiloxane at the ratio of 30:22:15:8:18:60, and the particle size D50 of the material is below 8 μm. D95 is less than 20μm, and the specific surface area is 850-900m2 2 / kg;

[0022] Among them, the polymer cellulose is hydroxypropyl methylcellulose and polyvinyl alcohol fiber with a mass ratio of 5:12; the Portland cement is a mixture of sulphoaluminate cement and ordinary Portland cement Compound cement, sulfoaluminate cement accounts for 7-9% of the total mass of cement, and the balance is ordinary Portland cement; the alkali-free glass fiber is a powder with a diameter of 9-13 μm and a length of 30-50 μm; The quick-setting agent is prepared from sodium aluminate, sodium carbon...

Embodiment 3

[0024] 65 parts of Portland cement, 20 parts of composite superfine powder, 6 parts of accelerator, 13 parts of macromolecular cellulose, 22 parts of modified polypropylene, 8 parts of alkali-free glass fiber; It is made of slag powder, fly ash, desulfurized gypsum, metakaolin, coal gangue and polydimethylsiloxane at the ratio of 22:12:12:6:15:45, and the particle size D50 of the material is below 8 μm. D95 is less than 20μm, and the specific surface area is 850-900m2 2 / kg;

[0025] Among them, the polymer cellulose is hydroxypropyl methylcellulose and polyvinyl alcohol fiber with a mass ratio of 5:8; the Portland cement is a mixture of sulphoaluminate cement and ordinary Portland cement Compound cement, sulfoaluminate cement accounts for 7-9% of the total mass of cement, and the balance is ordinary Portland cement; the alkali-free glass fiber is a powder with a diameter of 9-13 μm and a length of 30-50 μm; The quick-setting agent is prepared from sodium aluminate, sodium c...

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Abstract

The invention relates to the technical field of building materials, in particular to a high-strength water-resistant soil consolidation agent, including Portland cement, composite superfine powder, quick-setting agent, high molecular cellulose, modified polypropylene and alkali-free glass fiber. Compared with the prior art, the high-strength water-resistant soil consolidation agent proposed by the present invention has a larger bulk density of the solidified product after the soil is consolidated, which further promotes the composite ultrafine powder to participate in the hydration reaction and composite; The incorporation of fine powder and alkali-free glass fiber exerts a filling effect inside the cement-consolidated soil, reduces the permeability of the cement-consolidated soil, improves the drying shrinkage of the cement-consolidated soil, and the polymer cellulose and modified polypropylene Incorporation can effectively alleviate and reduce the corrosion rate of cement-consolidated soil, inhibit, prevent and delay the electrochemical reaction of steel bar corrosion, thereby prolonging the service life of cement-consolidated soil structure, and the strength develops steadily in the later stage, and with age, Its growth rate is also significantly better than ordinary consolidated soil.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a high-strength water-resistant soil consolidation agent. Background technique [0002] Concrete is a general term for engineering composite materials in which aggregates are cemented into a whole by cementitious materials. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. Concrete can be divided into inorganic cementitious concrete and organic cementitious concrete according to cementitious materials. Inorganic cementitious concrete includes lime siliceous cementitious concrete, Portland cement-based concrete, calcium-aluminum cement-based concrete, and gypsum concrete. , magnesia cement concrete, sulfur concrete, water glass sodium fluorosilicate concrete and metal con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B18/08C04B18/141C04B18/12C04B14/106C04B24/42C04B24/383C04B24/2611C04B14/42C04B2103/12C04B16/0641C04B18/064
Inventor 赖文友郑小军周斌
Owner 重庆千变科技有限公司
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