Mechanical, microstructure and rheological characteristics of high performance self-compacting cement pastes and concrete containing ground clay bricks

► Presence of SCC admixture, strength of concrete increases up to 28 days. ► Increase of powder content of GCB, the compressive strength of concrete increases. ► Pastes made with 12.5% and 37.5% GCB show higher strength with SCC at 28-1095 days. ► Increase of GCB content increases the shear stresses values in cement pastes. ► The microstructure of GCB-OPC displayed a more dense arrangement, enhances the compressive strength.