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A kind of alkali-free liquid accelerator and preparation method thereof

A technology of quick-setting agent and liquid, which is applied in the field of alkali-free liquid quick-setting agent and its preparation, and quick-setting cement-based materials. It can solve the problems of poor cement quick-setting effect and high content of high-mixture materials, and achieve rapid setting. , improve depolymerization, improve the effect of early performance

Active Publication Date: 2022-04-26
山东中岩建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the non-alkali liquid quick-setting agent recorded in the prior art has the advantages of fast setting and wide cement adaptability, it still has the disadvantages of high dosage and poor quick-setting effect on high-mixture cement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Alkali-free liquid quick-setting agent, the parts by mass of each raw material are 35 parts of polyaluminum sulfate, 4 parts of triethanolamine, 5 parts of tartaric acid, 2 parts of cationic polyacrylamide modified by polyaluminum chloride, and 80 parts of water. Test results: Using P·O42.5 cement as the cementitious material, the addition of non-alkali liquid quick-setting agent is 2%, the initial setting time of the clean slurry is 175s, and the final setting time is 430s.

Embodiment 2

[0032] Alkali-free liquid quick-setting agent, the mass parts of each raw material is 38 parts of polyaluminum sulfate, 3 parts of diethanolamine, 8 parts of citric acid, 3 parts of cationic polyacrylamide modified by polyaluminum chloride, and 80 parts of water. Test results: P·O42.5 cement is used as the cementitious material, the amount of non-alkali liquid quick-setting agent is 2%, the initial setting time of the clean slurry is 160s, and the final setting time is 425s.

Embodiment 3

[0034] Alkali-free liquid accelerator, the mass parts of each raw material is 40 parts of polyaluminum sulfate, 5 parts of triethanolamine, 15 parts of citric acid, 3 parts of cationic polyacrylamide modified by polyaluminum chloride, and 80 parts of water. Test results: P·O42.5 cement was used as the cementitious material, the amount of non-alkali liquid quick-setting agent added was 2%, the initial setting time of the clean slurry was 115s, and the final setting time was 320s.

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PUM

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Abstract

The invention relates to an alkali-free liquid quick-setting agent. The raw material is composed of polyaluminum sulfate, alcohol amine substances, complexing agent, coagulation accelerator and water. The product has the technical effect of rapid setting for cement-based building materials. The invention is applied Alkali-free liquid quick-setting agent has good adhesion to shotcrete, low rebound rate, small amount of dust, and is non-alkali and environmentally friendly, safe and non-corrosive. It still has a good quick-setting effect on cement-based materials with high mixture content.

Description

technical field [0001] The invention relates to the technical field of cement-based material admixtures, in particular to an alkali-free liquid quick-setting agent and a preparation method thereof, which are suitable for quick-setting cement-based materials such as shotcrete. Background technique [0002] Shotcrete refers to the use of compressed air, through the spraying machine, the concrete mixture prepared in a certain proportion, transported through the pipeline and sprayed at high speed onto the rock wall or other structural surfaces to solidify and harden. It is widely used In the rapid support of mining, civil engineering and other projects, the quality of shotcrete depends largely on the quality of the accelerator. [0003] At present, alkaline powder accelerators are commonly used in China. Although these accelerators have good coagulation effects and are cheap, they have high alkali content, which will cause serious corrosion to the eyes and skin of construction w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/28C04B103/12
CPCC04B40/0039C04B2103/12C04B22/148C04B24/122C04B24/06C04B24/287C04B22/002
Inventor 李海燕艾春珲曹虎鹿星单立福段文易
Owner 山东中岩建材科技有限公司
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