Using SF and CKD as cement replacement materials for producing cement mortar

When considering binding materials, cement mortar is thought to be one of the most conventional and effective materials. The cement mortar is mainly containing cement, sand (fine and rough), and water. In fact, there are many environmental and economical limitations to the usage of raw materials in mortar blends. For considering these limitations, many researchers studied the ability to incorporate waste-materials to fully or partially replace conventional raw materials. In this research, compressive strength and ultrasonic pulse velocity (UPV) will be studied by incorporating (SF) and (CKD) of mortar specimens and study the effect after 7,14, and 28 days. The obtained results from the collected samples (M1, M2, and M3) were compared with the reference mortar samples that contain ordinary Portland cement (OPC) only. The collected results showed that samples with CKD and SF have less compressive strength than ones with OPC with 28 days of curing. In addition, with higher CKD content, lower compressive strength was obtained. Samples (M1, M2) have the highest (UPV) values at different curing periods