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What is Phosphogypsum as Cement Set Retarder about?

This study investigates various chemical and physical treatments of South African phosphogypsum to enhance its suitability as a set retarder in cement. The findings indicate that treatments with ammonium hydroxide or sulfuric acid were more effective than traditional methods, while intergrinding with slaked lime improved performance but reduced compressive strength. A combined wet milling approach with lime slurry is recommended for practical applications in cement production.

Author

madhu sudhan

Language

EN