Performance of Tailing Contaminated Soils Solidified by Phosphate-Based Binder

Abstract:

This paper presents a study on soils, from the Baoshan mining site, contaminated with heavy metals and stabilized by using a new phosphate-based binder. Unconfined compression test, sequential extraction procedure, X-ray diffraction and scanning electron microscopic procedures are carried out. This study aims to explore the effects of binder type, binder content and curing time of solidified contaminated soils on leaching and strength properties of the soils contaminated with heavy metals in the mining area. The results showed that as the curing time is increased from 0 d to 28 d, the new phosphate-based binder stabilized contaminated soil underwent several changes: 1) improved the strength and 2) decreased the exchangeable Zn and Pb and increased the residual contents.

• Periodical: Applied Mechanics and Materials (Volume 858)
• Pages: 104-110
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.858.104
• Online since: November 2016
• Authors: Hao Liang Wu*, Yan Jun Du, Yu You Yang, M.L. Wei
• Keywords: Phosphate-Based Binder, Solidification, Stabilization, Strength, Tailing Contaminated Soils

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