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Non-shrinkage investment

A grouting, non-shrinking technology, applied in the field of inorganic cement mortar materials, can solve the problems of poor material uniformity, easy loss of fluidity, poor water retention, etc., and achieve the effects of stable volume, convenient use and stable product quality.

Inactive Publication Date: 2008-03-05
SHANGHAI HUANYU ARCHITECTURE ENG MATERIALCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional non-shrinkage grouting materials mainly have poor water retention, easy loss of fluidity, and easy segregation and bleeding problems. The actual engineering shows that the material uniformity of the pouring body is poor, and the pouring body is easy to crack. Due to the shrinkage of the material, the pouring body is separated from the bottom plate of the equipment. Failure to achieve the purpose of non-shrinkage grouting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of preparation method of non-shrinkage grouting material is:

[0018] Step 1. take each raw material by weight percentage;

[0019] Ordinary Portland cement (42.5R) 40.694, CSA expansion agent 3, FDN water reducing agent 0.3, ordinary construction medium sand 56, methyl hydroxypropyl cellulose ether 0.006;

[0020] Viscosity is 500maps / 20℃(2%)

[0021] Step 2. Put the weighed raw materials in a forced mixer and mix them for 10 minutes, then pack them into bags, and then transport them to the construction site after passing the inspection. When using, add 14% of tap water to use.

Embodiment 2

[0023] A kind of preparation method of non-shrinkage grouting material is:

[0024] Step 1. take each raw material by weight percentage;

[0025] Ordinary Portland cement (42.5R) 40.644, CSA expansion agent 3, FDN superplasticizer 0.35, medium sand 56 for ordinary construction, methyl hydroxypropyl cellulose ether 0.006.

[0026] Viscosity is 500maps / 20℃(2%)

[0027] Step 2. Put the weighed raw materials in a forced mixer and mix them for 10 minutes, then pack them into bags, and transport them to the construction site after passing the inspection. When using, add 13.5% of tap water to use.

Embodiment 3

[0029] A kind of preparation method of non-shrinkage grouting material is:

[0030] step 1. Take each raw material by weight percentage;

[0031] Ordinary Portland cement (42.5R) 41.594, CSA expansion agent 3, FDN superplasticizer 0.4, medium sand for ordinary construction 55, methyl hydroxypropyl cellulose ether 0.006;

[0032] Viscosity is 500maps / 20℃(2%)

[0033] Step 2. Put the weighed raw materials in a forced mixer and mix them for more than 5 minutes, then pack them into bags, and transport them to the construction site after passing the inspection. When using, add 13.5% of tap water to use.

[0034] Embodiment 1-3 each performance test result and former reinforcing material performance are shown in the following table:

[0035] Original grouting material

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PUM

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Abstract

The no-shrinkage grout material consists of Portland cement 35-50 wt%, expansion agent 1-6 wt%, water reducing agent 0.1-0.8 wt%, sand for building 45-60 wt%, and cellulose ether 0.001-0.08 wt%. It is prepared through weighing the materials, mixing in a mixer for over 5 min, and packing. It has the features of high flowability, no shrinkage, high strength, etc.

Description

technical field [0001] The invention relates to a non-shrinkage grouting material, which is applied to the foundation grouting of various equipment installations and steel structure installations. The invention belongs to the technical field of inorganic cement mortar materials. Background technique [0002] Traditional non-shrinkage grouting materials mainly have poor water retention, easy loss of fluidity, and easy segregation and bleeding problems. The actual engineering shows that the material uniformity of the pouring body is poor, and the pouring body is easy to crack. Due to the shrinkage of the material, the pouring body is separated from the bottom plate of the equipment. The purpose of non-shrinkage grouting cannot be achieved. Contents of the invention [0003] The purpose of the present invention is to provide a non-shrinkage grouting material with high fluidity, high water retention, anti-bleeding and anti-segregation. [0004] In order to achieve the above ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/06C04B24/38
CPCC04B2111/70C04B2111/34C04B28/02
Inventor 闵轶
Owner SHANGHAI HUANYU ARCHITECTURE ENG MATERIALCO