studied the effects of SCBA content as partial replacement of cement on physical and mechanical properties of hardened concrete. They found that the SCBA was an effective mineral admixture, with 20% as optimal replacement ratio of cement. In addition, Chusilp et al. [17] found that ground SCBA can be used to replace Portland cement up to 30% by weight of the binder, and the 28 and 90 days compressive strengths of the resulting concrete may be higher than that of the concrete without SCBA.