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Polymer-type water glass curing agent and application in water glass chemical grouting materials

A technology of chemical grouting and water glass, applied in application, fertilizer mixture, soil conditioning materials, etc., can solve the problems of brittle performance, low strength of consolidated body, difficult control of curing time, etc., to improve toughness, convenient construction, and not easy to corrode The effect of grouting equipment

Inactive Publication Date: 2010-11-17
GUANGZHOU CHEM GROUTING CO LTD CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims at the shortcomings of current inorganic and organic water glass curing agents, and develops a new polymeric water glass chemical grouting material. The curing agent combines the advantages of organic acids and ester water glass curing agents. And the consolidated body also avoids the disadvantages of low strength of inorganic curing agent consolidated body, difficult control of curing time, and brittle performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A. Synthesis of water glass curing agent

[0038] In a four-necked flask filled with nitrogen, equipped with a stirrer, a thermometer, a reflux condenser, and a constant pressure funnel, add half of the initiator of the oxidation-reduction system that has been configured (0.8g ammonium persulfate, 0.2g sodium bisulfite , 50g water), 0.1g sodium dodecylbenzenesulfonate, 0.1g dodecyl mercaptan, 0.3gNa 3 PO 4 12H 2 O, add 20g of acrylic acid and 10g of butyl methacrylate, raise the temperature to 50°C while stirring, then slowly add the mixture of 50g of acrylic acid and 20g of butyl methacrylate dropwise with a constant pressure funnel, and divide the remaining mixture into three batches at the same time. Add the initiator of the oxidation-reduction system into the system, after the dropwise addition, react for another 2 to 3 hours, and cool to obtain a polymer-based water glass curing agent for use.

[0039] B. Configuration of water glass chemical grouting material ...

Embodiment 2

[0044] A. Synthesis of water glass curing agent

[0045]In the four-necked flask that is full of nitrogen, stirrer, thermometer, reflux condenser, constant pressure funnel are housed, add the initiator (0.8g ammonium persulfate, 0.2g ferrous sulfate, 50g water), 0.4g fatty alcohol polyoxyethylene ether, 0.08g dodecanethiol, 0.3gNa 3 PO 4 12H 2 O, add 30g of methacrylic acid and 20g of ethyl methacrylate, raise the temperature to 60°C while stirring, then slowly add the mixture of 30g of acrylic acid and 20g of butyl methacrylate dropwise with a constant pressure funnel, and divide it into three batches at the same time Add the remaining initiator of the oxidation-reduction system into the system, after the dropwise addition, react for another 2 to 3 hours, and cool to obtain a polymer-based water glass curing agent for use.

[0046] B. Configuration of water glass chemical grouting material

[0047] Take 50g of potassium silicate, add 50g of water, and stir 20g of fly ash ...

Embodiment 3

[0051] A. Synthesis of water glass curing agent

[0052] In a four-necked flask filled with nitrogen, equipped with a stirrer, a thermometer, a reflux condenser, and a constant pressure funnel, add half of the initiator of the oxidation-reduction system that has been configured (0.6g potassium persulfate, 1g sodium bisulfite, 100g water), 0.1g sodium dodecylbenzenesulfonate, 0.1g dodecyl mercaptan, 0.3gNa 3 PO 4 12H 2 O, add 20g vinyl acetate and 20g hydroxyethyl methacrylate, raise the temperature to 60°C while stirring, then slowly add the mixture of 30g vinyl acetate and 30g hydroxyethyl methacrylate dropwise with constant pressure funnel, at the same time The remaining initiator of the oxidation-reduction system is added into the system in three batches, after the dropwise addition, the reaction is continued for 2 to 3 hours, and the polymer-based water glass curing agent is obtained by cooling for future use.

[0053] B. Configuration of water glass chemical grouting m...

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PUM

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Abstract

The invention relates to a polymer-type water glass curing agent with easily-controlled curing time and high toughness. The curing agent is mainly formed by polymerizing and copolymerizing double bonds-containing acids such as crylic acid, methacrylic acid and the like and double bonds-containing esters such as butyl methacrylate, vinyl acetate, hydroxy-ethyl methacrylate and the like by latex. The polymer-type water glass curing agent of the invention is a novel water-soluble water glass curing agent, which can control the curing time of the water-soluble grouting materials by controlling the content of carboxyl and ester group in a polymer. By using the curing agent, a water glass consolidating body has vey high compressive strength and toughness, synthetically overcomes the shortages of too fast curing time, high corrosiveness, low consolidating body strength and the like of an acid curing agent which is commonly used in the water glass grouting materials and the shortages of poor water solubility, slow curing time and the like of an organic ester curing agent, and can be widely applied in the field of anti-seepage stoppage engineering.

Description

technical field [0001] The invention relates to a water glass chemical grouting material, which is mainly used in sand-fixing and anti-seepage and plugging projects in the fields of foundation pits, tunnels and coal mine excavation. technical background [0002] High-rise buildings generally have to dig deep foundation pits during construction, tunnels and tunnels have to be dug during the construction of subways and highways, and deep holes have to be dug in projects such as coal mines and oil fields. Water seepage and quicksand will be encountered in the environment. Especially in rainy areas, these water seepage and quicksand not only affect the progress of the project, bring danger to the construction process, but also endanger the quality of the project after completion. Therefore, these quicksands must be reinforced with chemical grouting materials and made into curtains to stop water and seepage, so as to achieve the effect of fixing quicksands and stably reinforcing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C08F220/06C08F220/18C08F4/40C08F218/08C08F220/28C08F220/04C04B28/26C09K17/40C09K3/12C09K103/00
CPCC04B2111/00293C04B24/283C04B2111/70
Inventor 邹海良张亚峰邝健政王永珍刘军高南徐宇亮
Owner GUANGZHOU CHEM GROUTING CO LTD CAS
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