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A platform for research: civil engineering, architecture and urbanism
Paste filling material and preparation method thereof
The invention discloses an early-strength coal gangue paste filling material which comprises the following components in percentage by mass: 65-75% of coal gangue, 0-20% of fly ash, 2-8% of slag and 5-10% of cement. The solid mass concentration is 80-85%; the addition amounts of the slump retaining agent and the early strength agent are 0.3%-1% and 5%-10% of the mass of the cementing material respectively. A method for preparing the early-strength coal gangue paste filling material for coal mining under three conditions comprises the step of uniformly mixing the coal gangue, the fly ash, the slag, the cement, the additive and the water according to the proportion to obtain the paste filling material. The coal gangue removal amount is large, the cement consumption is small, solid waste resource utilization is facilitated, and the production cost is effectively reduced; after reaching a filling working face, the short-term strength is high within 2-3 hours, and the long-term strength can reach the strength grade of C10 concrete; the working performance is good and the filling efficiency is excellent; the preparation process is simple, low-carbon and environment-friendly, does not consume excessive energy, and conforms to the national economical and environment-friendly process production advocated.
本发明公开了早强型煤矸石膏体充填材料，以质量百分数计，包括煤矸石65％‑75％、粉煤灰0％‑20％、矿渣2％‑8％、水泥5％‑10％；固体质量浓度80％‑85％；保坍剂和早强剂添加量分别为胶凝材料质量的0.3％‑1％和5％‑10％。一种制备所述的用于“三下”压煤开采的早强型煤矸石膏体充填材料的方法，其包括按照比例将所述煤矸石、粉煤灰、矿渣、水泥、外加剂及水混合均匀得到所述膏体充填材料。煤矸石去化量大、水泥用量少，有利于固废资源化利用以及有效降低生产成本；到达充填工作面以后，2h‑3h短期强度高且后期强度可达C10混凝土强度等级；工作性能好、充填效率优；制备工艺流程简单、低碳环保、无过多能源消耗，符合国家节约环保型工艺生产倡导。
Paste filling material and preparation method thereof
The invention discloses an early-strength coal gangue paste filling material which comprises the following components in percentage by mass: 65-75% of coal gangue, 0-20% of fly ash, 2-8% of slag and 5-10% of cement. The solid mass concentration is 80-85%; the addition amounts of the slump retaining agent and the early strength agent are 0.3%-1% and 5%-10% of the mass of the cementing material respectively. A method for preparing the early-strength coal gangue paste filling material for coal mining under three conditions comprises the step of uniformly mixing the coal gangue, the fly ash, the slag, the cement, the additive and the water according to the proportion to obtain the paste filling material. The coal gangue removal amount is large, the cement consumption is small, solid waste resource utilization is facilitated, and the production cost is effectively reduced; after reaching a filling working face, the short-term strength is high within 2-3 hours, and the long-term strength can reach the strength grade of C10 concrete; the working performance is good and the filling efficiency is excellent; the preparation process is simple, low-carbon and environment-friendly, does not consume excessive energy, and conforms to the national economical and environment-friendly process production advocated.
本发明公开了早强型煤矸石膏体充填材料，以质量百分数计，包括煤矸石65％‑75％、粉煤灰0％‑20％、矿渣2％‑8％、水泥5％‑10％；固体质量浓度80％‑85％；保坍剂和早强剂添加量分别为胶凝材料质量的0.3％‑1％和5％‑10％。一种制备所述的用于“三下”压煤开采的早强型煤矸石膏体充填材料的方法，其包括按照比例将所述煤矸石、粉煤灰、矿渣、水泥、外加剂及水混合均匀得到所述膏体充填材料。煤矸石去化量大、水泥用量少，有利于固废资源化利用以及有效降低生产成本；到达充填工作面以后，2h‑3h短期强度高且后期强度可达C10混凝土强度等级；工作性能好、充填效率优；制备工艺流程简单、低碳环保、无过多能源消耗，符合国家节约环保型工艺生产倡导。
Paste filling material and preparation method thereof
一种膏体充填材料及其制备方法
HUANG ZHAOLONG (author) / ZHU TIANMIN (author) / LIU YAN (author)
2022-11-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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