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Inorganic two-component rapid hardening grouting slurry and preparation method thereof

A two-component, grouting material technology, which is applied in the field of coal mine safety reinforcement materials, can solve the problems of reducing the cost of grouting reinforcement and safety, and achieves good reinforcement effect, simple grouting process, and no shrinkage in volume

Inactive Publication Date: 2019-08-16
焦作市中砼科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide an inorganic two-component rapid-hardening grouting material, which can solve the safety problems caused by polymer grouting reinforcement materials during use, and further reduce the grouting rate. The cost of slurry reinforcement

Method used

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  • Inorganic two-component rapid hardening grouting slurry and preparation method thereof

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Effect test

Embodiment 1

[0021] Material A component: calcium sulfoaluminate 68Kg, calcium aluminate 12Kg, polyaluminum chloride 8Kg, sodium gluconate 5Kg, polycarboxylate superplasticizer 4Kg, aluminum sulfate 3Kg.

[0022] B material components: anhydrous gypsum 70Kg, calcium chloride 22Kg, polycarboxylate superplasticizer 4Kg, lithium carbonate 4Kg.

Embodiment 2

[0024] Material A component: calcium sulfoaluminate 70Kg, calcium aluminate 14Kg, polyaluminum chloride 6Kg, sodium gluconate 3Kg, polycarboxylate superplasticizer 4Kg, aluminum sulfate 3Kg.

[0025] B material components: 70Kg of anhydrous gypsum, 25Kg of calcium chloride, 3Kg of polycarboxylate superplasticizer, and 2Kg of lithium carbonate.

Embodiment 3

[0027] Material A component: calcium sulfoaluminate 70Kg, calcium aluminate 13Kg, polyaluminum chloride 7Kg, sodium gluconate 4Kg, polycarboxylate superplasticizer 3Kg, aluminum sulfate 3Kg.

[0028] B material components: 72Kg of anhydrous gypsum, 23Kg of calcium chloride, 3Kg of polycarboxylate superplasticizer, and 2Kg of lithium carbonate.

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Abstract

The invention discloses an inorganic two-component rapid hardening grouting slurry and a preparation method thereof. The grouting slurry is prepared from a component A and a component B according to amass ratio of (0.5-2):1, and the component A comprises, by weight, calcium sulphoaluminate, calcium aluminate, polyaluminum chloride, sodium gluconate, a polycarboxylic water reducer and aluminum sulfate; and the component B comprises anhydrous gypsum, calcium chloride, the polycarboxylic water reducer and lithium carbonate. The prepared slurry has the advantages of low viscosity, good fluidity and strong injectionability, can closely fill large spaces and fine cracks of a goaf, and can be bonded to an earth rock mass to a certain strength after solidifying in order to achieve a good reinforcing effect; the slurry does not shrink after solidifying, so the concretion rate of a reinforcement is 100%; and the final strength can reach 23.6 MPa.

Description

technical field [0001] The invention belongs to the field of coal mine safety reinforcement materials, and in particular relates to an inorganic two-component rapid-hardening grouting material and a preparation method thereof. Background technique [0002] During the mining process of underground coal mines, it is necessary to reinforce the underground roadway in time to ensure the continuous operation of coal mining and the safety of mining personnel. The most commonly used reinforcement method in coal mines is grouting reinforcement. There are three traditional grouting reinforcement materials, the first type is cement-based, the second type is chemical-based cement, and the third type is chemical composite grouting material. Due to the high cost and increasing performance requirements, traditional grouting materials can no longer meet the needs of coal mine roadway reinforcement, and are gradually replaced by new grouting reinforcement materials. In recent years, polymer...

Claims

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Application Information

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IPC IPC(8): C04B28/16C04B111/70C04B111/20
CPCC04B28/16C04B2111/20C04B2111/2092C04B2111/70C04B2201/50C04B22/14C04B22/08C04B22/12C04B24/10C04B2103/302C04B22/148C04B22/124C04B22/10
Inventor 乔集体乔晨阳
Owner 焦作市中砼科技有限公司
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