Anti-cracking large-size early-strength, high-strength and micro-expansion M grouting material and construction method thereof

A construction method and technology of grouting materials, which are applied in basic structure engineering, construction, etc., can solve problems such as the impact of structural durability and the inconvenience of construction of large-volume grouting materials, and achieve the effect of preventing cracking, simple and practical preparation, and strong operability Effect

Inactive Publication Date: 2015-06-10
MCC5 GROUP CORP SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The width of such cracks is generally within the allowable limit, and generally does not affect the strength of the structure, but it does affect the durability of the structure.
[0006] Therefore there are above-mentioned inconveniences and problems in known large-volume grouting material construction

Method used

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  • Anti-cracking large-size early-strength, high-strength and micro-expansion M grouting material and construction method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The anti-cracking large-volume early-strength, high-strength, micro-expansion M grouting material of the present invention,

[0059] Including cement, sand, early strength agent, water reducer and expansion agent, characterized in that:

[0060] The cement, P.Ⅱ52.5R, the amount of M grouting material per ton is 440Kg, and the mix ratio is 1;

[0061] The sand, medium sand, the amount of M grouting material per ton is 492Kg, the mix ratio is 1.12; the medium sand is medium sand (Zone II), fineness modulus > 2.6, mud content ≤ 2.0%, mud content > 0.5 %;

[0062] The early strength agent: calcium formate, the amount of per ton of M grouting material is 10Kg, and the mixing ratio is 0.02;

[0063] The water reducing agent: polyacid, the amount of M grouting material per ton is 5Kg, and the mixing ratio is 0.01;

[0064] The expansion agent: calcium sulfoaluminate expansion agent for concrete (UEA Yinge brand), the dosage per ton of M grouting material is 53Kg, and the mixi...

Embodiment 2

[0076] see now figure 1 , figure 1 It is a schematic diagram of on-line reconstruction grouting construction of the track according to the embodiment of the present invention.

[0077] The construction method of anti-cracking large-volume early strength, high strength, micro-expansion M grouting material of the present invention comprises the following steps:

[0078] a. On-site preparation of grouting material for construction immediately

[0079] Add crushed stone and water to the prefabricated M grouting material, the ratio is:

[0080] Prefabricated M grouting material: the amount of grouting material for immediate construction per ton is 512Kg, and the mix ratio is 1;

[0081] Coarse aggregate crushed stone: gradation 5-25mm, the amount of grouting material for construction immediately per ton is 419Kg, and the mix ratio is 0.82;

[0082] Water: tap water, the amount of grouting material for construction immediately per ton is 70Kg, and the mix ratio is 0.14;

[0083...

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Abstract

The invention discloses an anti-cracking large-size early-strength, high-strength and micro-expansion M grouting material which comprises cement, sand, an early strength agent, a water reducing agent and an expanding agent, and is characterized in that the cement refers to P.II 52.5R, has the amount of 440kg in each tonnage of the M grouting material and has a mix proportion of 1; the sand refers to medium sand, has the amount of 492kg in each tonnage of the M grouting material and has a mix proportion of 1.12; the early strength agent refers to calcium formate, has the amount of 10kg in each tonnage of the M grouting material and has a mix proportion of 0.02; the water reducing agent refers to poly-acid, has the amount of 5kg in each tonnage of the M grouting material and has a mix proportion of 0.01; and the expanding agent refers to a calcium sulphoaluminate expanding agent, has the amount of 53kg in each tonnage of the M grouting material and has a mix proportion of 0.12. The anti-cracking large-size early-strength, high-strength and micro-expansion M grouting material and the construction method thereof disclosed by the invention have the advantages that the M grouting material is simple and practical in preparation, high in operability and obvious in anti-cracking effect and is especially suitable for short-construction-period high-strength large-size grouting material engineering projects for on-line transformation, maintenance and rush repair.

Description

technical field [0001] The invention relates to a grouting material for foundation engineering, in particular to a large-volume grouting material and a construction method thereof. Background technique [0002] The grouting material has many advantages such as early strength, high strength, micro-expansion, high fluidity, and convenient use. Compared with the traditional fine stone concrete, it has the characteristics of better fluidity, higher strength and easy construction control. It is different from the traditional environment. Compared with oxygen mortar, it has the characteristics of good expansion, simple and fast construction. In construction, it can improve the installation accuracy of equipment, speed up installation and prolong the service life of equipment, etc. It is often used for anchoring of anchor bolts, secondary grouting of equipment, reinforcement and transformation of concrete structures. [0003] Commonly used grouting materials are generally cement-b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E02D15/02C04B111/70
Inventor 林逸易军徐建平鲁龙德李永慧
Owner MCC5 GROUP CORP SHANGHAI
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