Investigation on Utilization of Phosphogypsum as a Partial Replacement of Cement in Concrete

Abstract

The role of provide technology to promote the efficient use of minerals and ores and their processes waste is the main purpose of this research. Phosphogypsum is a phosphate fertilizer plants by-product and from some chemical industries, it can be used as a partial replacement of cement in concrete. This investigation has been carried out, in order to study the effect of partial replacement of cement with treated phosphogypsum (PG) in concrete. Phosphogypsum has been used with 3%, 7% and 10% percentages as partially replacement of cement. Results indicated that 10% of PG has improved the setting time, compressive strength, tensile strength and permeability of concrete. Further, it does not contribute to unsound paste. Also, it has improved the leachability of concrete which leads to be suitable in immobilization of radioactive waste. Eventually, from this investigation it can be recommended that, phosphogypsum has enormous prospect to be used in different concrete implementations.