Preparation method of early-strength micro-expansion grouting material

A grouting material and micro-expansion technology, applied in the field of building materials, can solve the problems of poor bonding strength and stability, insufficient strength, and slurry shrinkage, etc., and achieve good volume stability, excellent bonding performance, and enhanced adhesion. The effect of knot strength

Inactive Publication Date: 2017-09-15
周益铭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: the grouting materials used today cannot achieve sufficient strength in the early stage, the slurry shrinks severely, and at the same time, it is prone to shrinkage and cracking during the application process, and the defects of poor bonding strength and stability , providing a preparation method for early strength micro-expansion grouting material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028]Weigh blast furnace slag, red mud, kaolin and hydrotalcite respectively by mass ratio 5:2:2:1, add in pulverizer and pulverize and sieve to obtain mixed powder, count parts by weight, choose 40 parts of mixed powder, 5 parts respectively 1 part of carbon black, 3 parts of hydroxypropyl methylcellulose and 100 parts of water were mixed, stirred and mixed at 150r / min for 2 hours, and the slurry obtained after mixing was component 1; according to the mass ratio of 3:2, weigh Add potato starch and deionized water into a three-necked flask, put the three-necked flask into a water bath, and raise the temperature to 80°C, stir and mix for 20 minutes, then add 5% potato starch and 30% hydrogen peroxide dropwise to the three-necked flask to control the dropping rate 2g / min, after dripping, keep stirring and react for 1h, reduce the temperature of the water bath to 50°C after the reaction, add 0.5% borax by potato starch mass and 8% polyvinyl alcohol solution by mass fraction 30% b...

example 2

[0031] Weigh blast furnace slag, red mud, kaolin and hydrotalcite respectively by mass ratio 5:2:2:1, add in pulverizer and pulverize and sieve to obtain mixed powder, count parts by weight, choose 50 parts of mixed powder, 7 parts respectively 1 part of barium carbonate, 5 parts of hydroxypropyl methylcellulose and 120 parts of water were mixed, stirred and mixed at 200r / min for 3 hours, and the slurry obtained after mixing was component 1; according to the mass ratio of 3:2, weighed Add potato starch and deionized water into a three-necked flask, put the three-necked flask into a water bath, and raise the temperature to 90°C, stir and mix for 30 minutes, then add 7% of potato starch and 30% hydrogen peroxide dropwise to the three-necked flask to control the dropping rate 3g / min, after dripping, keep stirring and react for 2h, reduce the temperature of the water bath to 60°C after the reaction, add 0.8% borax of potato starch quality and 8% polyvinyl alcohol solution of 50% of...

example 3

[0034] Take blast furnace slag, red mud, kaolin and hydrotalcite respectively by mass ratio 5:2:2:1, add in pulverizer and sieve to obtain mixed powder after pulverizing, by weight, choose 45 parts of mixed powder, 6 parts respectively 1 part of sodium bicarbonate, 4 parts of hydroxypropyl methylcellulose and 110 parts of water were mixed, stirred and mixed at a speed of 175r / min for 2.5h, and the slurry obtained after mixing was component 1; according to the mass ratio of 3:2, respectively Weigh potato starch and deionized water into a three-necked flask, put the three-necked flask into a water bath, and raise the temperature to 85°C, stir and mix for 25 minutes, then add potato starch mass fraction 30% hydrogen peroxide dropwise to the three-necked flask, control The dropping rate is 2g / min. After the dropping, keep stirring and react for 1.5h. After the reaction, lower the temperature of the water bath to 55°C. Add 0.7% borax by mass of potato starch and 8% polyvinyl alcohol...

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PUM

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Abstract

The invention belongs to the technical field of building materials and particularly relates to a preparation method of an early-strength micro-expansion grouting material. The preparation method comprises the following steps: firstly crushing blast furnace slag, red mud and the like, mixing with a foaming agent, a thickening agent and water to obtain a component 1, then mixing potato starch and deionized water, raising the temperature and adding hydrogen peroxide, reducing the temperature and adding a borax and polyvinyl alcohol solution; freezing, drying, adding into dimethyl sulfoxide and performing ultrasonic reaction to obtain dispersion liquid; then raising the temperature of polyadipic acid-1,4-butanediol dialcohol and sequentially dropwise adding isophorone diisocyanate, 2,2-dimethylolpropionic acid, stannous octoate and the dispersion liquid; adding triethylamine and acetone after the end of reaction, stirring and adding deionized water to obtain a component 2; finally mixing the component 1 and the component 2 and dropwise adding a curing agent to obtain the micro-expansion grouting material. The grouting material prepared by the preparation method provided by the invention is adjustable and controllable in setting time, optimal in durability and safety, high in bonding strength, good in anti-water dispersion property and long in service life.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a preparation method of an early-strength micro-expansion grouting material. Background technique [0002] Grouting technology has been widely used in water leakage control, reinforcement and anti-seepage of dam foundation, water stop and reinforcement of underground structures, reinforcement and water stop in tunnel engineering, water stop of cracked rock mass and reinforcement of broken rock mass And in the repair of existing building concrete crack defects, the requirements for grouting materials for filling and anti-seepage projects are different from rock mass reinforcement, deformation control, house subsidence control and various foundation reinforcement projects. The grout material for the purpose of anti-seepage and anti-seepage does not have high requirements on strength, as long as it plays the role of filling and sealing, it can meet the needs o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/28C04B24/28C04B38/02
CPCC04B26/285C04B24/282C04B38/02C04B2201/10C04B2201/50C04B18/141C04B18/0409C04B14/106C04B14/26C04B22/002C04B2103/0068
Inventor 周益铭葛明月李雪晴
Owner 周益铭
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