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Early-strength bracket grouting material and preparation method thereof

A grouting material and bearing technology, which is applied in the field of engineering materials, can solve the problems of slow strength development, affecting construction progress, and lack of close connection of bearings, and achieves the effect of smooth surface, good construction performance, and long operating time.

Inactive Publication Date: 2015-09-16
HUBEI CHIDGE TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The fluidity of traditional grouting materials is easy to lose, and the strength develops slowly. It usually requires more than 7 days of maintenance, which prolongs the equipment turnover period and affects the construction progress; and because the volume shrinks during the hydration process of the grouting material, it is easy to cause the support to be not tightly connected after installation. , affecting the construction quality

Method used

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  • Early-strength bracket grouting material and preparation method thereof
  • Early-strength bracket grouting material and preparation method thereof
  • Early-strength bracket grouting material and preparation method thereof

Examples

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Embodiment

[0017] An early-strength bearing grouting material, comprising the following components in parts by weight:

[0018]

[0019] Wherein, the expansion component in this embodiment can choose UEA expansion agent or / and CSA expansion agent. The thickener can be selected from one or more of hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose and bentonite.

[0020] When in use, the material is directly stirred with water, and the weight ratio of water to material is 0.12-0.14. The early-strength bearing grouting material has good fluidity, durability, filling, early-strength, high-strength, micro-expansion and suitable setting time.

[0021] The material has good construction performance, self-levelling, long operating time, and smooth surface after pouring, which overcomes the shortcomings of traditional mortar such as unevenness, easy cracking, peeling, and powdering. It is often used in bridge supports and large-scale equipment. Secondary groutin...

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Abstract

The invention relates to a grouting material and a preparation method thereof, particularly an early-strength bracket grouting material and a preparation method thereof, belonging to the field of engineering materials. The early-strength bracket grouting material comprises the following components in parts by weight: 390-550 parts of cement, 5-30 parts of fly ash, 350-600 parts of fine aggregate, 20-50 parts of intumescent component, 2-10 parts of water reducing agent, 0.5-10 parts of defoaming agent, 0.5-10 parts of slow setting component, 0.1-2 parts of setting accelerating component and 0.02-1 part of thickener. Therefore, the material has the advantages of favorable workability, long operable time and smooth surface after grouting, can perform natural flow leveling, overcomes the defects of unevenness, high tendency to cracking, peeling and powdering and the like, and is commonly used in the fields of secondary grouting of bridge brackets and large-scale equipment, anchorage of anchor bolts, pavement repair and the like.

Description

technical field [0001] The invention relates to a grouting material and a preparation method, belonging to the field of engineering materials, in particular to an early-strength bearing grouting material and a preparation method. Background technique [0002] In recent years, the infrastructure is in a period of high-speed construction. In the process of bridge construction, the installation of a large number of prefabricated simply supported box girders and basin rubber bearings of cast-in-place girders is involved. It is necessary to grout the connecting parts of the box girder and the bearings. To play the role of support and fixation; in heavy machinery and other industries, when it comes to the installation and repair of large-scale equipment foundation supports, it is also necessary to grout the foundation bolts of the equipment, so that the equipment can run as soon as possible and production can continue. Therefore, how to quickly install and ensure high-quality inst...

Claims

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Application Information

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IPC IPC(8): C04B28/06
Inventor 邓小旭周强程凯斌
Owner HUBEI CHIDGE TECH
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