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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 problems such as expansion and cracking of concrete buildings, affecting the safety and service life of buildings, and accelerating chemical corrosion of cement.

Active Publication Date: 2020-10-23
重庆中航建设(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 which comprises Portland cement, composite ultrafine powder, an accelerator, polymer cellulose, modified polypropylene and alkali-free glass fibers. Compared with the prior art, the high-strength water-resistant soil consolidation agent provided by the invention has the advantages that a consolidation product obtained after soil consolidation has relatively large capillary volume density, so that the composite ultrafine powder is further promoted to participate in hydration reaction compounding; the ultrafine powder and the alkali-free glass fiber are doped into the cement consolidated soil to play a filling effect; the permeability of cement consolidated soil is reduced; the air shrinkage performance of the cement solidified soil is improved; the doping of the polymer cellulose and the modified polypropylene can effectively relieve and reduce the corrosion speed of the cement consolidated soil and inhibit, prevent and delay the electrochemical reaction of steel bar corrosion, so that the service life of the cement consolidated soil structureis prolonged, the later strength is stably developed, and the growth rate of the cement consolidated soil structure is obviously superior to that of common consolidated soil along with the increase of age.

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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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 重庆中航建设(集团)有限公司
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