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Chemical grouting material for coal face reinforcement
The invention discloses a chemical grouting material for coal face reinforcement. The chemical grouting material is formed by mixing a component A and a component B in a volume ratio of (0.8-1):1. The component A is composed of the following ingredients in parts by weight: 10-25 parts of self-made oxidized starch, 65-85 parts of water glass, 1-5 parts of polyacrylamide, 1-3 parts of silane coupling agent, 1-3 parts of surfactant and 1-3 parts of catalyst. The component B is composed of 100 parts by weight of polymethylene polyphenyl polyisocyanate. The preparation method of the chemical grouting material is simple; the grout has the advantages of low viscosity and no toxic volatile or corrosive substances; the solidified body has the advantages of excellent flame retardancy, low reaction temperature, favorable binding force and high compression strength (higher than 50 MPa); the components A and B have the advantages of stable properties and long storage time; and thus, the chemical grouting material is more beneficial to popularization and application.
Chemical grouting material for coal face reinforcement
The invention discloses a chemical grouting material for coal face reinforcement. The chemical grouting material is formed by mixing a component A and a component B in a volume ratio of (0.8-1):1. The component A is composed of the following ingredients in parts by weight: 10-25 parts of self-made oxidized starch, 65-85 parts of water glass, 1-5 parts of polyacrylamide, 1-3 parts of silane coupling agent, 1-3 parts of surfactant and 1-3 parts of catalyst. The component B is composed of 100 parts by weight of polymethylene polyphenyl polyisocyanate. The preparation method of the chemical grouting material is simple; the grout has the advantages of low viscosity and no toxic volatile or corrosive substances; the solidified body has the advantages of excellent flame retardancy, low reaction temperature, favorable binding force and high compression strength (higher than 50 MPa); the components A and B have the advantages of stable properties and long storage time; and thus, the chemical grouting material is more beneficial to popularization and application.
Chemical grouting material for coal face reinforcement
YANG ZHENGPENG (author) / ZHU JIANPING (author) / LIU XUAN (author) / ZHANG CHUNJING (author) / YANG JIA (author) / GUAN XUEMAO (author)
2015-05-06
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
Inorganic composite grouting material for coal mine tunnel surrounding rock reinforcement
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