Use of clay from a local source for calcination and subsequent preparation of the mixed cement

Abstract This paper deals with the use of calcinated clay and micronized limestone as supplementary cementitious materials (SMCs) for preparation blended Portland cement CEM II/B-M (Q-LL). Clay used in this study was at 700°C pozzolanic activity after calcination assessed using accelerated R3 test modified Chapelle test. The influence addition on mechanical properties hydration process investigated an optimal ratio 35% clinker replacement found. Initial decrease strength early ages, caused by SCM addition, almost compensated during maturation binder.