Influence of Clay Pozzolana on Some Properties of Portland Limestone Cement

For many years in the Ghanaian construction industry, ordinary Portland cement (OPC) has been known to be the main binding agent widely used for construction. However, in recent times, the cement market in the country has seen the entrance of Portland Limestone cement (PLC). Data regarding ordinary Portland cement and clay pozzolana (CP) is available but with PLC-CP mixes, there remains absolutely no data. In this work PLC was incorporated with different percentages of CP ranging between 10% and 40%. The CP was characterized based on physical, chemical, and mineralogical properties. Technical parameters, such as normal consistency and setting times, were analyzed on the formulated paste while strength analysis was performed on the batch mixes of formulated mortars. The results indicated that both the consistency and setting times appreciated as compared with only PLC paste, whereas the compressive strength of PLC mortars incorporated with CP fell slightly lower than the controlled PLC mortar.