Effect of Phosphogypsum on the Properties of Portland Cement

Use of industrial by-products as construction material can help to achieve sustainability in this industry. Phosphogypsum, a by-product in phosphoric acid manufacturing process, produced in bulk quantity especially from the fertilizer industry, typically used as a supplementary fertilizer for soil treatment. Alternatively, disposal of these materials in the form of landfill also need huge land area although environmental hazard concern from these activities has been raised by researches. The material has therefore, tried to incorporate in cement manufacturing considering its sustainable use. Phosphogypsum could be used as a substitute of natural gypsum in the production of Portland cement to control the hydration reaction rate of cement. In this study, raw phosphogypsum was collected from a local fertilizer industry. Properties of…