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Aggregate-free cement-based grouting material

A grouting material, cement-based technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of high price, toxic pollution of the environment, poor repair effect of fine seams, etc., and achieve high density , the effect of high fluidity

Inactive Publication Date: 2011-09-07
URUMQI MUNICIPAL BUILDING MATERIALS SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problem that in the prior art, when it is applied to special projects such as narrow gaps with a gap width ≤ 15mm, if chemical grouting materials are used, they are expensive, toxic and may pollute the environment; if ordinary grouting materials are used Cement-based grouting materials have the disadvantage of poor repairing effect on fine seams. We provide an aggregate-free cement-based grouting material specially used for repairing gaps with a width of less than 15mm. This grouting material does not "bleed" and condenses during the pouring Adjustable time; no shrinkage, slight expansion, no cracking, high strength after coagulation

Method used

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  • Aggregate-free cement-based grouting material

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Embodiment 1

[0030] Embodiment 1: A kind of aggregate-free cement-based grouting material is made up of cement, gypsum, expansion material, thickener, superplasticizer, coagulation regulator, admixture, and each raw material is by weight ratio: 700 parts of cement, 0-40 parts of gypsum, 50-80 parts of expansive material, 0.5-1 part of thickener, 3-6 parts of superplasticizer, 0-5 parts of coagulation regulator, and 160-200 parts of admixture.

[0031] Among them, the cement is 700 parts of ordinary Portland cement that can be purchased on the market with a strength grade of 52.5. The expansion material is 80 parts of commercially available calcium aluminate (AEA) expansion agent. The thickener is 0.5 part of methyl hydroxypropyl cellulose. The superplasticizer is 6 parts of casein. The coagulation regulator is 5 parts of calcium formate. The admixture is 70 parts of lithium slag powder and 110 parts of fly ash, and the fineness specification of the admixture is that the specific surface...

Embodiment 2

[0032] Embodiment 2: A kind of aggregate-free cement-based grouting material is made up of cement, gypsum, expansion material, thickener, superplasticizer, coagulation regulator, admixture, and each raw material is by weight ratio: 700 parts of cement, 0-40 parts of gypsum, 50-80 parts of expansive material, 0.5-1 part of thickener, 3-6 parts of superplasticizer, 0-5 parts of coagulation regulator, and 160-200 parts of admixture.

[0033] Among them, the cement is 650 parts of ordinary Portland cement and 50 parts of aluminate cement that can be purchased on the market with a strength grade of 42.5. Gypsum is 40 parts of anhydrous gypsum. Anhydrous gypsum fineness specification is specific surface area: 400~600 m 2 / kg. The expansion material is 60 parts of commercially available calcium sulfoaluminate (UEA) expansion agent and 0.05 part of aluminum powder. The thickener is 2 parts of carboxymethyl cellulose. The superplasticizer is 4 parts of polycarboxylate powder. The ...

Embodiment 3

[0034] Embodiment 3: A kind of aggregate-free cement-based grouting material is made up of cement, gypsum, expansion material, thickener, superplasticizer, coagulation regulator, admixture, and each raw material is by weight ratio: 700 parts of cement, 0-40 parts of gypsum, 50-80 parts of expansion component, 0.5-1 part of thickener, 3-6 parts of superplasticizer, 0-5 parts of coagulation regulator, 160-200 parts of admixture .

[0035]Among them, the cement is 680 parts of ordinary Portland cement and 20 parts of aluminate cement that can be purchased on the market with a strength grade of 42.5. Gypsum is 16 parts of hemihydrate gypsum, and the fineness specification of hemihydrate gypsum is specific surface area: 400-600 m 2 / kg. The expansion materials are 50 parts of commercially available calcium sulfoaluminate (UEA) expansion agent and 10 parts of quicklime. The thickener is 0.5 parts of hydroxyethyl cellulose, and the superplasticizer is 3 parts of polycarboxylate po...

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Abstract

The invention belongs to the technical field of inorganic cement-based grouting materials, in particular relating to an aggregate-free cement-based grouting material. The grouting material comprises the following components in parts by weight: 700 parts of cement, 0-40 parts of gypsum, 50-80 parts of expanded material, 0.5-1 part of thickener, 3-6 parts of super-plasticizer, 0-5 parts of coagulation regulating agent and 160-200 parts of admixture. In the invention, mainly aiming at gap width less than or equal to 15mm, when in grouting, the aggregate-free cement-based grouting material has the advantages of good self-flowability and adjustable coagulation time; water is not secreted in the process of grouting; and after coagulation, the grouting material has the characteristics of no shrinkage, micro-expansion, no crack and high strength. Simultaneously, the aggregate-free cement-based grouting material has the advantages of low cost, easiness for construction and environmental friendliness.

Description

technical field [0001] The invention belongs to the technical field of inorganic cement-based grouting materials, in particular to an aggregate-free cement-based grouting material. Background technique [0002] At present, in the actual production, there are more and more special projects such as narrow gaps with a gap width of ≤15mm. The application effect of traditional grouting materials in such projects is not ideal. For example, in the secondary grouting of large-scale precision equipment installation, when there are obstacles such as anchor bolts in the space of the secondary grouting layer, and the grouting channel is narrow, it is difficult to really fill it, and unfilled cavities are often formed. Ordinary cement slurry has drying shrinkage, so that the grouting layer cannot form a tight bond between the equipment base and the concrete foundation after hardening, causing the equipment base to loosen and affect long-term use; Ordinary grouting material has a large ...

Claims

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Application Information

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IPC IPC(8): C04B28/14
CPCC04B2103/32C04B28/142C04B2103/24C04B28/06Y02W30/91C04B7/02C04B14/04C04B18/08C04B18/141C04B18/144C04B22/008C04B22/04C04B22/064C04B2103/44C04B22/143C04B24/383C04B24/14C04B24/2641C04B22/124C04B22/126C04B22/147C04B22/16C04B24/04C04B24/06C04B24/10C04B7/32
Inventor 白建飞陈永利冯涛
Owner URUMQI MUNICIPAL BUILDING MATERIALS SCI RES INST
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