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

Abstract:

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.

• Periodical: Advanced Materials Research (Volume 878)
• Pages: 171-176
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.878.171
• Online since: January 2014
• Authors: Xu Quan Huang, Hao Bo Hou, Min Zhou, Wei Xin Wang
• Keywords: Cementitious Materials, Compressive Strength, Ettringite, Tailings

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