Cement-based grouting material applicable to narrow-space and long-distance grouting operation

A grouting material, cement-based technology, applied in the field of preparation of the cement-based grouting material, can solve problems such as viscous resistance, ignoring the viscosity requirements of the slurry, unfavorable grouting operations, etc., to achieve low viscosity performance and continuously expand the flow capacity Effect

Inactive Publication Date: 2014-07-30
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual construction applications, although many grouting materials have high fluidity, there is a large viscous resistance in the grouting process, which is not conducive to the grouting operation.
The reason is that these materials mainly rely on continuous expansion flow ability to achieve high fluidity, but the viscosity of the slurry is very high
Therefore, the fluidity measured by the truncated cone method is beneficial to characterize the continuous flow ability of cement-based grouting materials, but it ignores the requirement for the viscosity of the slurry

Method used

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  • Cement-based grouting material applicable to narrow-space and long-distance grouting operation
  • Cement-based grouting material applicable to narrow-space and long-distance grouting operation
  • Cement-based grouting material applicable to narrow-space and long-distance grouting operation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The ratio of raw materials for cement-based grouting materials suitable for narrow spaces and long-distance grouting operations is as follows:

[0023]

[0024] Among them, based on the total weight of the composite water reducer, the polycarboxylate ether water reducer accounts for 20%, and the melamine water reducer accounts for 80%;

[0025] The thixotropic anti-settling agent is based on the total weight of the thixotropic anti-settling agent, attapulgite (325 mesh fineness) accounts for 90%, and hydroxypropyl methylcellulose ether (viscosity 15000mPa·s) accounts for 10%.

[0026] Preparation: Put the above-mentioned components into the mixer according to their respective parts by mass, and mix uniformly to obtain a dry mix; when in use, add water with 17% of the total mass of the dry mix to the obtained dry mix, and mix evenly. That is, a cement-based grouting material suitable for narrow spaces and long-distance grouting operations can be obtained.

[0027] Me...

Embodiment 2

[0029] The ratio of raw materials for cement-based grouting materials suitable for narrow spaces and long-distance grouting operations is as follows:

[0030]

[0031] Among them, based on the total weight of the composite water reducer, the polycarboxylate ether water reducer accounts for 30%, and the melamine water reducer accounts for 70%;

[0032] The thixotropic anti-settling agent is based on the total weight of the thixotropic anti-settling agent, attapulgite (325 mesh fineness) accounts for 95%, and hydroxypropyl methylcellulose ether (viscosity 15000mPa·s) accounts for 5%.

[0033] Preparation: put the above-mentioned components into the mixer according to their respective parts by mass, and mix uniformly to obtain a dry mix; when in use, add water with 16% of the total mass of the dry mix to the obtained dry mix, and mix evenly. That is, a cement-based grouting material suitable for narrow spaces and long-distance grouting operations can be obtained.

[0034] Mea...

Embodiment 3

[0036] The ratio of raw materials for cement-based grouting materials suitable for narrow spaces and long-distance grouting operations is as follows:

[0037]

[0038] Among them, based on the total weight of the composite water reducer, the polycarboxylate ether water reducer accounts for 30%, and the melamine water reducer accounts for 70%;

[0039] The thixotropic anti-settling agent is based on the total weight of the thixotropic anti-settling agent, attapulgite (325 mesh fineness) accounts for 90%, and hydroxypropyl methylcellulose ether (viscosity 15000mPa·s) accounts for 10%.

[0040] Preparation: Put the above-mentioned components into the mixer according to their respective mass parts, and mix uniformly to obtain a dry mix; when in use, add water with 15% of the total mass of the dry mix to the obtained dry mix, and mix evenly. That is, a cement-based grouting material suitable for narrow spaces and long-distance grouting operations can be obtained.

[0041] Measu...

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Abstract

The invention relates to a cement-based grouting material applicable to narrow-space and long-distance grouting operation and a preparation method thereof. The cement-based grouting material applicable to narrow-space and long-distance grouting operation comprises the following materials in parts by weight: 100 parts of sand, 60-70 parts of cement, 20-40 parts of mineral admixture, 5-10 parts of expanding agent, 0.5-1 part of compound water reducer, 0.2-0.4 part of thixotropic anti-settling agent, and 0.1-0.3 part of defoaming agent. The cement-based grouting material disclosed by the invention has continuously expanded fluid ability and low viscosity, and flowing property simultaneously satisfies fluidity not less than 380mm of fluidity requirements of grouting materials I in GB / T50448-2008 and flow time not more than 35 seconds of ASTM-C939 flow time requirements, therefore, a more effective solution can be provided for narrow-space and long-distance grouting operation.

Description

technical field [0001] The invention relates to a cement-based grouting material suitable for narrow spaces and long-distance grouting operations. Compared with ordinary cement-based grouting materials, it has both continuous expansion flow capacity and low viscosity performance. The invention also relates to a preparation method of the cement-based grouting material. Background technique [0002] Since the early 1990s, the cement-based grouting materials independently developed and produced by my country have been successfully applied for the first time in Tianjin Seamless Steel Tube Company. ", JC / T986-2005 "Cement-based Grouting Materials", GB / T50448-2008 "Technical Specifications for the Application of Cement-based Grouting Materials" and other industry and national standards. [0003] The test methods for the fluidity of cement-based grouting materials in the three standards are the same, and the maximum free expansion diameter of the material slurry under its own weigh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/06C04B111/70
Inventor 高汉青杨晓光于大第郑旗宋涛文屈海峰任恩平张剑李伟陈夙陈博
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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