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Water-borne epoxy resin modified cement grouting material

A water-based epoxy resin and cement grouting technology, used in the field of cement grouting materials, can solve the problems of poor durability, low flexural strength, and poor grouting joints, and achieves improved compressive strength, good bonding performance, and improved The effect of waterproof performance

Active Publication Date: 2016-04-20
天津天盈新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is easy to cause problems with the quality of grouting
At the same time, the existing cement grouting materials have relatively low flexural strength and high elastic modulus, and are brittle materials. If they are used for foundation grouting of vibration equipment, their durability will not be good.
[0003] Cement tends to shrink during the hardening stage. The shrinkage will lead to poor grouting and cracks. However, the existing cement grouting materials generally only use a single-component expansion agent to compensate for the shrinkage.
There is no effective compensation method for the shrinkage in the plastic stage, and it is easy to cause the grouting to be not dense enough to effectively fill the void structure

Method used

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  • Water-borne epoxy resin modified cement grouting material
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The invention relates to a water-based epoxy resin modified cement grouting material. The typical application of this example is bridge tunnel grouting. It is prepared from the following raw materials at room temperature according to weight ratio:

[0028] 10 parts of water-based epoxy resin system, including 4 parts of Shell 828 epoxy resin and 6 parts of American Gas Chemical 721 curing agent

[0029] Tangshan Jidong Cement Co., Ltd. P·O42.5 Ordinary Portland Cement 45 parts

[0030] 10 parts of 200 mesh quartz powder

[0031] 5 parts of calcium carbonate powder with particle size of 300 mesh

[0032] Suzhou FOX8H polycarboxylate superplasticizer 0.6 parts

[0033] Composite expansion agent 8 parts

[0034] 1 part of powder pitch with average particle size ≤ 100um

[0035] 0.02 parts of low-viscosity cellulose with a viscosity of 100mpa.s

[0036] Sodium citrate retarder 0.01 parts

[0037] The amount of water added is 14% of the total weight of the material.

...

Embodiment 2

[0041] The invention relates to a water-based epoxy resin modified cement grouting material. This example is suitable for the use of ordinary grouting grout. It is prepared from the following raw materials at room temperature according to the weight ratio:

[0042] 8 parts of water-based epoxy resin system, including 6 parts of E51 epoxy resin and 2 parts of American Gas Chemical 701 curing agent

[0043] Tangshan Jidong Cement Co., Ltd. P·O42.5 Ordinary Portland Cement 35 parts

[0044] Tangshan Polar Bear Building Materials Co., Ltd. 5 parts of fast-hardening sulfoaluminate cement

[0045] 40 parts of continuously graded quartz sand with particle size less than 2.36m

[0046] Composite expansion agent 6 parts

[0047] Jiangsu Bote New Material Co., Ltd. PCA(Ⅰ) polycarboxylate superplasticizer 0.5 parts

[0048] 1 part powdered asphalt

[0049] 7 parts of 200 mesh particle size calcium carbonate powder

[0050] Viscosity is 0.03 parts of low-viscosity cellulose of 200mpa.s...

Embodiment 3

[0055] The present invention relates to water-based epoxy resin modified cement grouting material, this example is prepared by weight ratio from the following raw materials:

[0056] 7.5 parts of water-based epoxy resin system, including 6 parts of Zhejiang Anbang water-based epoxy resin emulsion (solid content is 50%), and 2 parts of supporting curing agent for Zhejiang Anbang water-based epoxy resin emulsion

[0057] Tangshan Jidong Cement Co., Ltd. P·O42.5 Ordinary Portland Cement 40 parts

[0058] Tangshan Polar Bear Building Materials Co., Ltd. 10 parts of fast-hardening sulfoaluminate cement

[0059] 20 parts of 300 mesh quartz powder

[0060] Composite expansion agent 6 parts

[0061] Sika Viscocrete-125P polycarboxylate superplasticizer 0.2 parts

[0062] 0.50 parts of powder pitch

[0063] Calcium carbonate powder 2.5 parts

[0064] Viscosity is 0.02 parts of low-viscosity cellulose of 300mpa.s

[0065] L-type tartaric acid retarder 0.03 part

[0066] The amoun...

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Abstract

The invention provides a water-borne epoxy resin modified cement grouting material. The material is prepared by the following raw materials in parts by weight: 5-10 parts of water-borne epoxy resin, 30-50 parts of cement, 5-30 parts of quartz powder, 0-40 parts of quartz sand, 5-10 parts of calcium carbonate powder, 5-10 parts of a composite expanding agent, 0.01-0.03 parts of low-viscosity cellulose, 0.5-1 parts of asphalt powder, 0.2-0.6 parts of a water reducer, and 0.001-0.03 parts of a retarder. The material overcomes the deficiency in prior art, the composite expanding agent is used for compensating shrinkage in plastic stage, density of grouting is increased, and interspace structure is effectively filled; at the same time, fluidity is good, and settlement phenomenon disappears; the material is suitable for common cement grouting, and is suitable for repairing and strengthening, duct grouting, crack repairing, and other engineering occasions; furtherly, the materials has the advantages of good fluidity, adhesive property, shrinkage compensation performance and corrosion resistance.

Description

technical field [0001] The invention belongs to the field of cement grouting materials, in particular to a water-based epoxy resin modified cement grouting material. Background technique [0002] If the existing cement grouting materials have a large degree of fluidity, settlement and bleeding often occur. It is easy to cause problems with the quality of grouting. At the same time, the existing cement grouting materials have relatively low flexural strength and high elastic modulus, and are brittle materials. If they are used for foundation grouting of vibration equipment, their durability will not be good. [0003] Cement tends to shrink during the hardening stage, and the shrinkage will lead to poor grouting and cracks. However, the existing cement grouting materials generally only use a single-component expansion agent to compensate for the shrinkage. There is no effective compensation method for the shrinkage in the plastic stage, and it is easy to cause the grouting t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/06C04B24/28C04B22/14C04B111/70
CPCC04B28/06C04B40/0039C04B2103/0068C04B2111/70C04B7/02C04B14/06C04B14/28C04B22/068C04B22/142C04B24/281C04B24/121C04B24/36C04B24/383C04B2103/302C04B2103/22C04B24/24C04B24/06
Inventor 刘凤东王冬梅陈佳宁
Owner 天津天盈新型建材有限公司
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