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Holding agent for weakly weathered limestone fracture integrity

A limestone, weak weathering technology, applied in the directions of adhesive additives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problems of large particle size and impermeability, achieve low cost and improve compression resistance. The effect of strength and convenient construction

Inactive Publication Date: 2020-07-24
GUANGXI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Cement grouting is a traditional method of strengthening cracks in dangerous rocks, but because the particle size of cement slurry is too large, it cannot penetrate into the pores and cracks of weakly weathered limestone and improve the integrity of the rock, so it is not suitable for weakly weathered limestone cracks.

Method used

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  • Holding agent for weakly weathered limestone fracture integrity
  • Holding agent for weakly weathered limestone fracture integrity
  • Holding agent for weakly weathered limestone fracture integrity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A supporting agent for the integrity of weakly weathered limestone fractures, the raw materials and dosage are shown in the following table:

[0041]

[0042]

[0043] The preparation method of component A is: add E-44 epoxy resin, n-butyl polyacrylate, lignin and ethanol according to the raw materials and dosage ratio in the above table into the reaction kettle with its own temperature adjustment system and stirring device, Stir and react at 50°C for 30 minutes, then add diallyl phthalate, nano-graphene particles, polyglycidyl methacrylate, half the amount of resorcinol bisglycidyl ether, and stir well Then gradually add the remaining half of the amount of resorcinol bisglycidyl ether and liquid nitrile rubber, that is, resorcinol bisglycidyl ether is added in two times, and then continue to react for 1 to 2 hours, and then filter to obtain component A ,spare.

[0044] The preparation method of component B is: in the reaction kettle with its own temperature adju...

Embodiment 2

[0047]A supporting agent for the integrity of weakly weathered limestone fractures, the raw materials and dosage are shown in the following table:

[0048]

[0049]

[0050] The preparation method of component A is: add E-44 epoxy resin, n-butyl polyacrylate, lignin and ethanol according to the raw materials and dosage ratio in the above table into the reaction kettle with its own temperature adjustment system and stirring device, Stir and react at 50°C for 30 minutes, then add 1,2-diallyl phthalate, micron graphite particles, polyglycidyl methacrylate, add half the amount of resorcinol bisglycidyl ether, and stir well Gradually add the remaining half of the amount of resorcinol bisglycidyl ether and liquid nitrile rubber, that is, resorcinol bisglycidyl ether is added in two times, and then continue to react for 1 to 2 hours, and then filter to obtain component A. spare.

[0051] The preparation method of component B is: in the reaction kettle with its own temperature ...

Embodiment 3

[0054] A supporting agent for the integrity of weakly weathered limestone fractures, the raw materials and dosage are shown in the following table:

[0055]

[0056] The preparation method of component A is: add E-44 epoxy resin, n-butyl polyacrylate, lignin and ethanol according to the raw materials and dosage ratio in the above table into the reaction kettle with its own temperature adjustment system and stirring device, Stir and react at 50°C for 30 minutes, then add 1,2-diallyl phthalate, micron graphite particles, polyglycidyl methacrylate, add half the amount of resorcinol bisglycidyl ether, and stir well Gradually add the remaining half of the amount of resorcinol bisglycidyl ether and liquid nitrile rubber, that is, resorcinol bisglycidyl ether is added in two times, and then continue to react for 1 to 2 hours, and then filter to obtain component A. spare.

[0057] The preparation method of component B is: in the reaction kettle with its own temperature adjustment ...

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Abstract

The invention discloses a holding agent for weakly weathered limestone fracture integrity. The holding agent comprises a component A and a component B. The sum of the mass percentages of the raw materials of the component A and the component B is 100%. The component A is prepared from the following raw materials in percentage by mass: 44.3 to 44.5 percent of epoxy resin, filler, ethanol, liquid nitrile rubber, graphene, polyglycidyl methacrylate and resorcinol diglycidyl ether; the component B is prepared from the following raw materials in percentage by mass: low-molecular-weight polyamide resin, an organic silicon coupling agent, inorganic powder and antimonous oxide. The holding agent can reinforce loose rock mass and improve the integrity of the rock so that slipping and dangerous rockcollapse are effectively prevented, the compressive strength exceeds 1-2 times of that of fresh limestone, the cost is low, the construction is convenient, no organic waste gas or toxic gas is generated in the preparation process, and the holding agent is suitable for reinforcing weakly weathered limestone cracks in karst regions.

Description

technical field [0001] The invention relates to the technical field of geological disaster prevention engineering, in particular to a supporting agent for the integrity of cracks in weakly weathered limestone. Background technique [0002] Limestone, referred to as limestone, is a carbonate rock mainly composed of calcite, and sometimes contains dolomite, clay minerals and clastic minerals. It is generally not hard and reacts violently with dilute hydrochloric acid. The main chemical composition of limestone is CaCO 3 It is easy to dissolve, so stone forests and caves are often formed in limestone areas, which is called karst terrain. China's karst landforms are widely distributed and have many types, which are rare in the world. They are mainly concentrated in the Yunnan-Guizhou Plateau and southwest Sichuan. Limestone is one of the main rocks for the development of karst landforms. [0003] Dangerous rock refers to a geological body that is cut and separated by multiple ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/06C09J11/04C09J11/08C09J11/06
CPCC09J4/06C09J11/04C09J11/06C09J11/08
Inventor 吴如春常晓岗
Owner GUANGXI UNIV FOR NATITIES
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