Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of composite cemented filling paste
The invention discloses a preparation method of composite cemented filling paste, which comprises the following steps: taking the following raw materials in parts by weight: 12.5-15 parts of waste concrete, 20-25 parts of carbide slag, 25-30 parts of fly ash, 12.5-15 parts of coal gangue, 20-25 parts of geopolymer, pretreated coal gangue and waste concrete, mixing the solid raw materials for 1-3 minutes, adding water according to the mass ratio of solid to water of 7: 3, stirring, standing for 1-3 minutes, and cooling to room temperature to obtain the composite cemented filling paste. The stirring rotation speed is 80-100 r/min, and the stirring time is 2-5 minutes. The paste with good flowing property, curing property and mechanical property is prepared, and the goaf of the mine field is filled with the paste, so that the goaf supporting strength is improved, the goaf is supported, ground surface settlement is prevented, the ecological environment is protected, solid waste is reasonably utilized, heavy metal is adsorbed, and underground water source pollution is prevented.
本发明公布了一种复合胶结充填膏体制备方法，包括以下步骤：按重量份取原料：12.5～15份废弃混凝土，20～25份电石渣，25～30份粉煤灰，12.5～15份煤矸石，20～25份地质聚合物，预处理煤矸石和废弃混凝土，混合固体原料，混合时间为1～3分钟，按固体与水的质量比例7：3，加水搅拌，搅拌转速为80～100r/min，搅拌时间为2～5分钟。本发明制备了一种流动性能、固化性能以及力学性能均较为良好的膏体，将膏体填入矿场采空区，从而实现提高支撑强度、支撑采空区、防止地表沉降、保护生态环境、合理利用固体废物、吸附重金属，防止污染地下水源的目标。
Preparation method of composite cemented filling paste
The invention discloses a preparation method of composite cemented filling paste, which comprises the following steps: taking the following raw materials in parts by weight: 12.5-15 parts of waste concrete, 20-25 parts of carbide slag, 25-30 parts of fly ash, 12.5-15 parts of coal gangue, 20-25 parts of geopolymer, pretreated coal gangue and waste concrete, mixing the solid raw materials for 1-3 minutes, adding water according to the mass ratio of solid to water of 7: 3, stirring, standing for 1-3 minutes, and cooling to room temperature to obtain the composite cemented filling paste. The stirring rotation speed is 80-100 r/min, and the stirring time is 2-5 minutes. The paste with good flowing property, curing property and mechanical property is prepared, and the goaf of the mine field is filled with the paste, so that the goaf supporting strength is improved, the goaf is supported, ground surface settlement is prevented, the ecological environment is protected, solid waste is reasonably utilized, heavy metal is adsorbed, and underground water source pollution is prevented.
本发明公布了一种复合胶结充填膏体制备方法，包括以下步骤：按重量份取原料：12.5～15份废弃混凝土，20～25份电石渣，25～30份粉煤灰，12.5～15份煤矸石，20～25份地质聚合物，预处理煤矸石和废弃混凝土，混合固体原料，混合时间为1～3分钟，按固体与水的质量比例7：3，加水搅拌，搅拌转速为80～100r/min，搅拌时间为2～5分钟。本发明制备了一种流动性能、固化性能以及力学性能均较为良好的膏体，将膏体填入矿场采空区，从而实现提高支撑强度、支撑采空区、防止地表沉降、保护生态环境、合理利用固体废物、吸附重金属，防止污染地下水源的目标。
Preparation method of composite cemented filling paste
一种复合胶结充填膏体制备方法
ZHAO KANG (Autor:in) / ZHANG LIWEI (Autor:in) / WANG HANWEN (Autor:in) / KONG JIA (Autor:in) / WANG YAN (Autor:in) / HOU YUNLU (Autor:in)
10.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2024