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High-molecule slip casting plugging material

A plugging material and polymer technology, which is applied in the fields of grouting materials for plugging, waterproof plugging, and building anti-seepage. It can solve the problems of unfavorable small seam grouting and complicated process, and achieve good groutability and preparation methods. Simple and avoid environmental problems

Pending Publication Date: 2019-08-09
山东省建筑科学研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, two-step reaction of radical polymerization and modification is required, and the process is complicated; the viscosity of polyacrylamide slurry after polymerization (concentration is 10%, pH=7, about 30mPa·s) is higher than that of unpolymerized acrylamide slurry. It is not conducive to small joint grouting; and when the slurry concentration is below 12%, the gel strength of the modified PA M slurry (10% slurry concentration, about 100KP) is slightly lower than that of concrete (10% slurry concentration, about 120KP)

Method used

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Examples

Experimental program
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preparation example Construction

[0032] In some embodiments, the preparation method of main ingredient A comprises the following steps:

[0033] First add a certain amount of water to the enamel stirring tank, and then add solid raw materials such as N-methylolacrylamide, N, N'-methylenebisacrylamide, sodium bisulfite, sodium sulfite, sodium dithionite, sulfur Sodium sulfite, stirred at a speed of 200-1000r / min for 30-60min at room temperature until the solid raw material was completely dissolved, then added liquid raw materials such as N,N-dimethylacrylamide, polyethylene glycol (200) Acrylate and polyethylene glycol (200) dimethacrylate continued to stir for 15-30 minutes until they were evenly mixed to obtain the main ingredient A solution.

[0034] In some embodiments, the curing agent B is composed of: 0-8 parts of ammonium persulfate, 0-8 parts of potassium persulfate, 0-5 parts of trishydroxymethylaminomethane, 0-5 parts of disodium edetate 5 servings.

[0035] In some embodiments, the preparation me...

Embodiment 1

[0039] (1) Preparation of raw materials

[0040] a. Prepare component A

[0041] First add 300 parts of water to the enamel stirring tank, add 1.5 parts of sodium bisulfite, stir at room temperature at a speed of 300r / min for 30 minutes until completely dissolved, then add 50 parts of N,N-dimethylacrylamide in turn, poly Add 1.8 parts of ethylene glycol (200) diacrylate, and continue stirring for 15 minutes until the mixture is uniform to obtain component A.

[0042] b. Prepare component B

[0043] First add 130 parts of water to the enamel stirring tank, then add 2.5 parts of ammonium persulfate and 0.5 parts of disodium edetate, stir at 300 r / min for 30 minutes at room temperature to dissolve to obtain component B.

[0044] (2) Grouting

[0045] Drill 3 holes every one meter at the leakage site, and install water-stop needles at the drilled site; after all are installed, grout with a double-fluid grouting pump; start the grouting equipment, and combine components A and B ...

Embodiment 2

[0048] (1) Preparation of raw materials

[0049] a. Prepare component A

[0050] First add 300 parts of water to the enamel stirring tank, add 1 part of sodium sulfite, stir at room temperature at a speed of 300r / min for 30 minutes until completely dissolved, then add 52 parts of N,N-dimethylacrylamide, N, N' - 1.8 parts of methylene bisacrylamide, continue to stir for 15 minutes until the mixture is uniform to obtain A component.

[0051] b. Prepare component B

[0052] First add 130 parts of water to the enamel stirring tank, then add 2.5 parts of ammonium persulfate and 0.5 parts of disodium edetate, stir at 300 r / min for 30 minutes at room temperature to dissolve to obtain component B.

[0053] (2) Grouting

[0054] Drill 3 holes every one meter at the leakage site, and install water-stop needles at the drilled site; after all are installed, grout with a double-fluid grouting pump; start the grouting equipment, and combine components A and B into one The outlet is mixe...

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Abstract

The invention relates to a high-molecule slip casting plugging material. Particularly the material is suitable for being applied to water plugging and leakage prevention for fine cracks of buildings at the normal temperature. According to the material, a mixture of two or more of N,N'-dimethylacrylamide, N-methylol acrylamide, N,N'-methylene bisacrylamide, polyethylene glycol (200) diacrylate, poly ethyleneglycol (200) dimethacrylate, sodium hydrogen sulfite, sodium sulfite, sodium dithionite and sodium thiosulfate is used as a main raw material (a material A); a mixture of two or more of ammonium persulfate, potassium persulfate, trismetyl aminomethane and ethylenediamine tetraacetic acid disodium salt is used as a curing agent (a material B); after the material A and the material B are mixed, the slurry viscosity is extremely low, the groutability is excellent, the gelation time can be adjusted according to the demand, the high-molecule gel formed through curing has good adhesivity and compression strength and has a leakage prevention and plugging function, and the material has wide application prospects in the field of leakage prevention and plugging of the buildings.

Description

technical field [0001] The invention belongs to the technical field of building anti-seepage and plugging grouting materials and waterproof plugging, and in particular relates to a polymer grouting plugging material. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the rapid development of social economy and urbanization process, urban congestion is becoming more and more serious, and the development and utilization of underground space has become an inevitable trend of urban sustainable development. For example, in order to improve the traffic in the city, subways in major cities have been built one after another. As of January 2019, 37 cities have opened and operate...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/54C08F222/38C08F220/58
CPCC08F220/54C08F283/065C08F222/385C08F220/585
Inventor 陈树林陶绪泉王睿
Owner 山东省建筑科学研究院有限公司
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