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Early-strength type cement-based grouting material and using method thereof

A technology of cement-based and grouting material, applied in the field of cement-based grouting material, can solve the problems of high cost, poor fluidity, failure to meet architectural design standards, etc., and achieve the effect of high fluidity and low cost

Inactive Publication Date: 2014-01-29
江苏兆佳建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used grouting materials in engineering are mainly cement-based grouting materials. Chemical grouting materials have not been widely used due to their high cost. However, cement-based grouting materials have problems such as slow strength development, poor fluidity, and large shrinkage, which directly lead to The quality of the project is unstable and cannot meet the architectural design standards

Method used

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  • Early-strength type cement-based grouting material and using method thereof
  • Early-strength type cement-based grouting material and using method thereof
  • Early-strength type cement-based grouting material and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An early-strength cement-based grouting material, the mass percentage of its components is as follows:

[0020]

[0021]

[0022] How to use: Put the weighed raw materials in a forced mixer and mix them evenly, then pack them into bags, and then transport them to the construction site after passing the inspection. Add water according to the water-material ratio of 0.15:1, and measure the basic performance:

[0023] Initial fluidity 355mm, 30min fluidity 315mm, 24h compressive strength 27.2MPa, 3d compressive strength 50.4MPa, 28d compressive strength 75.4MPa, 1d vertical expansion rate 0.08%, bleeding rate 0%, in line with JC / T986- The requirements stipulated in the 2005 cement-based grouting material standard.

Embodiment 2

[0025] An early-strength cement-based grouting material, the mass percentage of its components is as follows:

[0026]

[0027] How to use: Put the weighed raw materials in a forced mixer and mix them evenly, then pack them into bags, and then transport them to the construction site after passing the inspection. Add water according to the water-material ratio of 0.15:1, and measure the basic performance:

[0028] Initial fluidity 345mm, 30min fluidity 305mm, 24h compressive strength 29.3MPa, 3d compressive strength 54.1MPa, 28d compressive strength 77.4MPa, 1d vertical expansion rate 0.06%, bleeding rate 0%, in line with JC / T986- The requirements stipulated in the 2005 cement-based grouting material standard.

Embodiment 3

[0030] An early-strength cement-based grouting material, the mass percentage of its components is as follows:

[0031]

[0032] How to use: Put the weighed raw materials in a forced mixer and mix them evenly, then pack them into bags, and then transport them to the construction site after passing the inspection. Add water according to the water-material ratio of 0.15:1, and measure the basic performance:

[0033] Initial fluidity 350mm, 30min fluidity 300mm, 24h compressive strength 30.3MPa, 3d compressive strength 56.1MPa, 28d compressive strength 81.4MPa, 1d vertical expansion rate 0.05%, bleeding rate 0%, in line with JC / T986- The requirements stipulated in the 2005 cement-based grouting material standard.

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Abstract

The invention discloses an early-strength type cement-based grouting material and a using method of the grouting material. The grouting material comprises the following components by mass percent: 34-38% of PO 42.5R cement, 3-5% of 42.5 early-strength sulphoaluminate cement, 44-51% of quartz sand, 10-12% of filler and 0.36-1.16% of additive, wherein the additive comprises a water reducing agent, a water-retaining agent, a retarder and a defoaming agent, and the mixing amounts of the water reducing agent, the water-retaining agent, the retarder and the defoaming agent are respectively 0.15-0.30%, 0.015-0.025%, 0.05-0.15% and 0.15-0.33%. The using method comprises the steps of evenly mixing the components according to the mass percent, packaging into bags, and adding water into the grouting material according to the ratio of 0.15: 1 between water and material for use. The early-strength type cement-based grouting material has the advantages of being early in strength, high in strength, free from shrinkage, high in fluidity, low in cost and free from harmful chemical substances.

Description

technical field [0001] The invention relates to a cement-based grouting material, in particular to an early-strength cement-based grouting material and a using method thereof. Background technique [0002] Cement-based grouting material is a powdery material pre-mixed in the factory by high-strength cementing components, super-inking components, expansion components, preferably graded aggregate components and micro-modified components in appropriate proportions. When used, just add water and stir to become a self-leveling high-strength non-shrinkage grouting material with uniform consistency and suitable consistency that can meet the construction requirements. [0003] At present, the commonly used grouting materials in engineering are mainly cement-based grouting materials. Chemical grouting materials have not been widely used due to their high cost. However, cement-based grouting materials have problems such as slow strength development, poor fluidity, and large shrinkage,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B14/06
Inventor 张超蔡文龙钱建男
Owner 江苏兆佳建材科技有限公司
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