Bridge bearing grouting material and preparation method thereof

A technology of bridge bearings and grouting materials, which is applied in the field of building materials, can solve problems such as poor construction quality and slow development of grouting material strength, and achieve the effects of adjustable setting time, low production cost, and increased strength

Inactive Publication Date: 2018-06-15
湖北恒利建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims to solve the problems of slow development of grouting material strength and poor construction quality in the prior art, and provides a new bridge support grouting material

Method used

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  • Bridge bearing grouting material and preparation method thereof
  • Bridge bearing grouting material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A bridge bearing grouting material, characterized in that it includes 350 parts of cementitious material, 500 parts of fine aggregate, 20 parts of expansion agent, 50 parts of fly ash, and 7 parts of admixture;

[0025] The cementitious material is a mixture of sulfoaluminate and ordinary Portland cement 42.5, and the mixing mass ratio is 5:3;

[0026] The fine aggregate is quartz sand, and the particle size of the quartz sand is 0.1-4mm;

[0027] The admixture is composed of 2 parts of water reducer and 2.5 parts of early strength agent; the water reducer is polycarboxylate water reducer, the dosage is 2.5 parts, and the water reducing rate is 30-39%.

[0028] High water reduction efficiency and better compatibility with other materials.

[0029] In this embodiment, among the quartz sand, the quartz sand with a particle size of 0.1-0.5 mm accounts for 20% of the total amount of the quartz sand; the quartz sand with a particle size of 0.5-2.5 mm accounts for 50% of the...

Embodiment 2

[0032] A bridge bearing grouting material, characterized in that it includes 500 parts of cementitious material, 800 parts of fine aggregate, 60 parts of expansion agent, 110 parts of fly ash, and 25 parts of admixture;

[0033] The cementitious material is a mixture of sulfoaluminate and ordinary Portland cement 42.5, and the mixing mass ratio is 5:1;

[0034] The fine aggregate is quartz sand, and the particle size of the quartz sand is 0.1-4mm;

[0035] The admixture is composed of 10 parts of water reducer, 6 parts of early strength agent group and 2 parts of defoamer; the water reducer is polycarboxylate water reducer, the dosage is 7 parts, and the water reducing rate is 30 to 39 %.

[0036] High water reduction efficiency and better compatibility with other materials.

[0037] In this embodiment, among the quartz sand, the quartz sand with a particle size of 0.1-0.5 mm accounts for 20% of the total amount of the quartz sand; the quartz sand with a particle size of 0.5...

Embodiment 3

[0043] A bridge bearing grouting material, characterized in that it includes 400 parts of cementitious material, 600 parts of fine aggregate, 50 parts of expansion agent, 80 parts of fly ash, and 12 parts of admixture;

[0044] The cementitious material is a mixture of sulfoaluminate and ordinary Portland cement 52.5, and the mixing mass ratio is 5:2;

[0045] The fine aggregate is quartz sand, and the particle size of the quartz sand is 0.1-4mm;

[0046] The admixture consists of 2 parts of water reducer, 3 parts of early strength agent group, 1 part of defoamer, 0.5 part of water retaining agent, and 0.5 part of retarder; the described water reducer is polycarboxylate water reducer, and the dosage is 7 parts, the water reduction rate is 30-39%.

[0047] High water reduction efficiency and better compatibility with other materials.

[0048] In this embodiment, among the quartz sand, the quartz sand with a particle size of 0.1-0.5 mm accounts for 20% of the total amount of t...

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Abstract

The invention discloses a bridge bearing grouting material and a preparation method thereof, and belongs to the technical field of building materials. The grouting material comprises the following materials: 350-500 parts of a cementing material, 500-800 parts of fine aggregates, 20-60 parts of an expanding agent, 50-110 parts of fly ash and 7-25 parts of admixtures, wherein the cementing materialis a mixture of sulphoaluminate and ordinary Portland cement at a mixing mass ratio of 5: (3-1); the fine aggregates are quartz sand, wherein the particle size of the quartz sand is 0.1-4 mm; and theadmixtures comprise at least a water reducing agent and an early strength agent, wherein the water reducing agent is a polycarboxylic acid water reducing agent. The grouting material provided by theinvention has advantages of fast hardening and high strength.

Description

technical field [0001] The invention relates to a bridge support grouting material and a preparation method thereof, belonging to the technical field of building materials. 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 installation or repair of bearings often becomes the key to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B111/70
CPCC04B28/06C04B2111/70C04B2201/50C04B7/02C04B14/06C04B20/0076C04B2103/302C04B2103/0068C04B18/08C04B2103/50C04B2103/22C04B2103/465
Inventor 黄文明仝浩胜魏运超胡从文陈明中
Owner 湖北恒利建材科技有限公司
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