In order to reduce the footprint over the environment, regarding the great energy consumption required to produce cement, it was allowed in the International, European and Egyptian standards to produce the blended cement known as CEMII. This work could successfully utilize the fired ceramic wall tiles waste rejected in industry to partially replace cement up to 35% by weight to produce one of the allowed types of CEMII, depending on the fact that Egyptian standards of ceramic wall tiles allows only the 1^st grade to be delivered to the market. The obtained blended cement was found to be in good conformity to the standards.

In the present work, the fired ceramic tiles waste was vey fine ground up to particle size of 70 μm. It was replacing ordinary Portland cement (OPC) known as CEMI42.5N in different proportions, then mixed with sand and water to form mortar. Standard test methods of cement mortar were applied, then the best ratios of additions were investigated. Tools as XRD, XRF, particle size distribution and SEM with EDAX were used to assess both raw materials and the suggested mixtures as well.