An advance understanding of the alkali activation of cover layers waste rocks from phosphate mines: Mechanical, structure and microstructure studies

Sanae Sbi,Abdelilah Aboulayt,Wafaa Borja,Said Mansouri,Hicham El Boudour El Idrissi,Youssef Samih,Nawal Semlal,Hassan Hannache,Youssef Tamraoui,Jones Alami

Construction and Building Materials（2022）

Cited 3|Views10

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Abstract

•Phosphate mining wastes rocks as a promising secondary resource material in civil engineering.•Depper understanding of alkali activation of Phosphate mining waste rocks from the cover layer.•Phase composition investigated through MAS NMR-based analyses.•Formation of various hydration products, including CSH, C-(A)-SH, N-(A)-SH and C-(N)-ASH gels.

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Key words

Alkali activation,Phosphate mining waste,Silica modulus (Ms),Microstructure,MAS NMR

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