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Magnesium acrylate-superfine cement compounded grouting material and preparation method thereof

A technology of ultra-fine cement and magnesium acrylate, which is applied in the field of building materials, can solve the problems of limited groutability and applicability, and achieve the effects of good groutability, good durability, and high stone strength

Inactive Publication Date: 2013-02-20
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented new type of grinding material made up of certain types of plastic mixed together creates strong particles that are easy to mix into water without losing their shape when they harden quickly due to hydrations caused during mixing process. These granules have excellent durability even at very small sizes such as those found within crack formations. They also work well against soil environments compared to traditional methods involving sand fillings.

Problems solved by technology

Technological Problem addressed in this patented technical problem relates to improving the properties (strength) and behavioral characteristics of grouts made up of chemically treated and non metals during excavations underground without causing damage caused by conventional methods involving expensive raw materials. Grounding reintroduction agents containing polysaccharides could provide improved resistance against stress failure while reducing costs associated with manufacturing processes.

Method used

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  • Magnesium acrylate-superfine cement compounded grouting material and preparation method thereof
  • Magnesium acrylate-superfine cement compounded grouting material and preparation method thereof
  • Magnesium acrylate-superfine cement compounded grouting material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0012] The weight proportion of each component of embodiment 1 is:

[0013]

[0014] After the materials are mixed and stirred evenly, the obtained grouting material has good fluidity, high permeability, good slurry stability, and large grouting range. The initial setting time is about 14 minutes, the final setting time is about 45 minutes, and the grouting material after 60 minutes The compressive strength of serous stones is about 4MPa.

[0015] After changing the ratio test, the main ingredients are superfine cement: 36% ~ 40% magnesium acrylate aqueous solution: water: triethanolamine: sodium chloride: sodium nitrite: sodium persulfate = 100: 10 ~ 30: 30 ~ 70: In the range of 0.1-0.5: 0.5-1: 1-3: 0.01-0.05, all have the basic effects of good groutability and high strength of serous stones.

[0016] In a further preferred experiment, the weight ratio of each component is controlled at: superfine cement: 36%~40% magnesium acrylate aqueous solution: water: triethanolamine...

Embodiment 2

[0017] The weight proportion of each component of embodiment 2 is:

[0018]

[0019] After the materials are mixed and stirred evenly, the obtained grouting material has the properties of high fluidity, high permeability, good slurry stability, and high grout stone strength. The initial setting time is about 4 minutes, the final setting time is about 35 minutes, and the final setting time after 60 minutes. The compressive strength of slurry stones is about 12MPa.

Embodiment 3

[0020] The weight proportion of each component of embodiment 3 is:

[0021]

[0022] After the above raw materials are mixed and stirred evenly, the obtained grouting material has the characteristics of good slurry stability, fast setting time, and high strength of slurry stones. The initial setting time is about 2 minutes, and the final setting time is about 25 minutes. The compressive strength is about 16MPa.

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Abstract

The present invention discloses a magnesium acrylate-superfine cement compounded grouting material and a preparation method thereof. The grouting material is provided for stratum reinforcement in a construction process. Main materials of the grouting material comprise, by weight, 100 parts of superfine cement, 10-30 parts of a magnesium acrylate aqueous solution, 30-70 parts of water, 0.1-0.5 part of trolamine, 0.5-1 part of sodium chloride, 1-3 parts of sodium nitrite, and 0.01-0.05 part of sodium persulfate. According to the present invention, the polymer and the superfine cement are compounded to obtain the quick setting high strength grouting material, wherein the material has advantages of good groutability, adjustable setting time, high slurry consolidating strength and the like; and the magnesium acrylate-superfine cement compounded grouting material has wide application prospects in loose stratum consolidation breaking, foundation improvement, building foundation reinforcement and other fields.

Description

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Claims

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Application Information

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Owner SOUTHWEST JIAOTONG UNIV
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