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High polymer grouting material for concrete engineering

A grouting material and high polymer technology, which is applied in the field of high polymer grouting materials for concrete engineering, can solve the problems of low stiffness and strength, inability to play a positive role in the overall bearing capacity of the pavement structure, and large deflection of the pavement, etc., to achieve Enhance structural strength and integrity, save treatment costs, and have little impact on traffic

Inactive Publication Date: 2018-10-23
广州北环智能交通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the amount of material is large and the structural layer is slightly lifted, this low-density material cannot bring positive effects on the overall bearing capacity of the pavement structure
Because the stiffness and strength of low-density materials are low, it often leads to greater deflection of the road surface after grouting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A high polymer grouting material for concrete engineering. The main ingredients of the formula are isocyanate, polyether polyol and admixture. The polyether polyol and admixture are mixed by pressure grouting machine. After the polyether polyol and admixture are mixed Then add isocyanate to react to foam, and after 15 minutes to solidify and form a polyurethane grouting material. The expansion ratio of the high polymer grouting material is 20:1, and the free cell density of the high polymer grouting material is greater than 55g / cm 3 .

[0029] The isocyanate is diphenylmethane diisocyanate, the viscosity of diphenylmethane diisocyanate is 200-300mPa.s, and the density of diphenylmethane diisocyanate is 1.03-1.05g / cm 3 .

[0030] Polyether polyol is polyoxyalkylene polyether diol, the viscosity of polyoxyalkylene polyether diol is 150-250mPa.s, and the density of polyoxyalkylene polyether diol is 1.22-1.25g / cm 3 . The volume ratio of diphenylmethane diisocyanate to p...

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PUM

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Abstract

The invention discloses a high polymer grouting material for concrete engineering. According to the high polymer grouting material, the main components are prepared from isocyanate, polyether polyol and an additive, polyether polyol and the additive are mixed, then isocyanate is added into polyether polyol and the additive to react, instant foaming is carried out, and solidification is carried outafter a period of time so as to obtain the polyurethane grouting material. The high polymer grouting material is a high-molecular foamed copolymer, is an elastic material with good flexibility and isnot liable to degrade, the waterproof performance is excellent, the compressive strength can be up to 10 MPa, cavities and gaps in the structure can be densely filled, solids with the individual strength in the structure can be cemented, and in addition, good crack resistance and impermeability are achieved.

Description

technical field [0001] The invention belongs to the technical field of concrete engineering materials, in particular to a high polymer grouting material for concrete engineering. Background technique [0002] The pavement of the North Ring Road is characterized by a composite pavement, that is, the cement pavement is paved with asphalt mixture. The reflective cracks of the cement plate allow water to enter the pavement structure, and then the grout leads to hollowing out, which affects the life of the pavement structure. Coupled with the influence of overload and heavy traffic factors, this technical problem has also been "magnified", which seriously affects the construction and operation concept of "safe, harmonious and beautiful" modern high-grade highways. [0003] In order to solve this disease that has plagued pavement quality for a long time, engineering technology and scientific research personnel have carried out a large number of researches on cracks and void repair...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/48C08G101/00
CPCC08G18/4825C08G18/7671C08G2110/0083
Inventor 郭泽棉
Owner 广州北环智能交通科技有限公司
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