A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Cemented filling material as well as preparation method and application thereof
The invention belongs to the field of environmental protection, and particularly relates to a cemented filling material and a preparation method and application thereof. The cemented filling material provided by the invention comprises tailings, a cementing material and water, the cementing material comprises superfine slag powder and an exciting agent; the exciting agent comprises desulfurized fly ash and a modified oxidizing agent; the modified oxidizing agent is of a core-shell structure, an inner core is an oxidizing agent, and a shell is calcium sulfate. The superfine slag powder is used as a main component of a cementing material in the filling material, the desulfurized fly ash is used as a main exciting agent of the cementing material, the oxidizing agent coated and modified by the calcium sulfate is added in an auxiliary manner, and generation of ettringite and oxidation of calcium sulfite in the desulfurized fly ash are synergistically regulated and controlled; the later-stage shrinkage of the filling material can be reduced, and the later-stage strength is improved. The cemented filling material provided by the invention can effectively solve the problems of shrinkage and strength reduction in the later hardening stage of a filling body, and the filling material is relatively low in production cost and has a good market prospect.
本发明属于环保领域，尤其涉及一种胶结充填材料及其制备方法和应用。本发明提供的胶结充填材料包括尾砂、胶凝材料和水；所述胶凝材料包括矿渣微粉和激发剂；所述激发剂包括脱硫灰和改性氧化剂；所述改性氧化剂为核壳结构，内核为氧化剂，外壳为硫酸钙。本发明以矿渣微粉作为充填材料中胶凝材料的主要成分，利用脱硫灰作为胶凝材料的主要激发剂，辅助添加经过硫酸钙包覆改性后的氧化剂，通过协同调控钙矾石的生成和脱硫灰中亚硫酸钙的氧化，可以减小充填材料的后期收缩、增加其后期强度。本发明提供的胶结充填材料可以有效解决充填体硬化后期收缩和强度下降问题，且该充填材料的生产成本较低，具有良好的市场前景。
Cemented filling material as well as preparation method and application thereof
The invention belongs to the field of environmental protection, and particularly relates to a cemented filling material and a preparation method and application thereof. The cemented filling material provided by the invention comprises tailings, a cementing material and water, the cementing material comprises superfine slag powder and an exciting agent; the exciting agent comprises desulfurized fly ash and a modified oxidizing agent; the modified oxidizing agent is of a core-shell structure, an inner core is an oxidizing agent, and a shell is calcium sulfate. The superfine slag powder is used as a main component of a cementing material in the filling material, the desulfurized fly ash is used as a main exciting agent of the cementing material, the oxidizing agent coated and modified by the calcium sulfate is added in an auxiliary manner, and generation of ettringite and oxidation of calcium sulfite in the desulfurized fly ash are synergistically regulated and controlled; the later-stage shrinkage of the filling material can be reduced, and the later-stage strength is improved. The cemented filling material provided by the invention can effectively solve the problems of shrinkage and strength reduction in the later hardening stage of a filling body, and the filling material is relatively low in production cost and has a good market prospect.
本发明属于环保领域，尤其涉及一种胶结充填材料及其制备方法和应用。本发明提供的胶结充填材料包括尾砂、胶凝材料和水；所述胶凝材料包括矿渣微粉和激发剂；所述激发剂包括脱硫灰和改性氧化剂；所述改性氧化剂为核壳结构，内核为氧化剂，外壳为硫酸钙。本发明以矿渣微粉作为充填材料中胶凝材料的主要成分，利用脱硫灰作为胶凝材料的主要激发剂，辅助添加经过硫酸钙包覆改性后的氧化剂，通过协同调控钙矾石的生成和脱硫灰中亚硫酸钙的氧化，可以减小充填材料的后期收缩、增加其后期强度。本发明提供的胶结充填材料可以有效解决充填体硬化后期收缩和强度下降问题，且该充填材料的生产成本较低，具有良好的市场前景。
Cemented filling material as well as preparation method and application thereof
一种胶结充填材料及其制备方法和应用
CHEN HONG (author) / LAI YIQIANG (author) / SU QINGFA (author) / WU MUZHENG (author) / CHEN YONGRUI (author) / ZHANG YUAN (author) / LIM CHOON GUAN (author) / LU MAOYUAN (author) / WANG JIANCHUN (author)
2024-11-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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