Mechanical Properties and Microstructure Analysis of Copper Tailings Solidifying with Different Cementitious Materials

被引：9
作者：
Huang, Xuquan [1 ,2 ]
Hou, Haobo [2 ]
Zhou, Min [2 ]
Wang, Weixing [2 ]
机构：
[1] China Three Gorges Univ, Coll Hydraul & Environm Engn, Yichang 443002, Peoples R China
[2] Wuhan Univ, Dept Resource & Environm Sci, Wuhan 430079, Peoples R China
来源：
SELECTED PROCEEDINGS OF THE EIGHTH INTERNATIONAL CONFERENCE ON WASTE MANAGEMENT AND TECHNOLOGY | 2014年 / 878卷
关键词：
Cementitious materials; Tailings; Compressive strength; Ettringite; CEMENTED-PASTE BACKFILL; MINE; TEMPERATURE; POLLUTION;
D O I：
10.4028/www.scientific.net/AMR.878.171
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
With new type steel slag-blast furnace slag-fluorgypsum-based cemented material, P . O42.5 cement, commonly used cementation agent in China, mechanical properties and microstructure of tailings solidification bodies are studied. The hydration products and morphology tailings concretion body in 60 days are analyzed by SEM and XRD test, which reveals the tailings cementation mechanism solidifying with different cementitious material. Furthermore, a large number of slender bar-like ettringite crystals and filamentous network-like calcium-silicate-hydrate gels bond firmly each other, which is the most important reason why steel slag-blast furnace slag-fluorgypsum base cemented material has the best tailings cementation mechanical properties.
引用
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页码：171 / +
页数：3
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