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The present study aims at investigating the effects of roof tile (porous ceramic) waste-coarse aggregate (PCCA) as an internal curing agent and high temperature history at early ages on mechanical properties of concrete and shear strength of reinforced concrete (RC) beams made from Portland blast-furnace slag cement type B. The PCCA, which has a crushing value of 20% and a high water absorption of approximately 9%, has been reported to be effective in mitigating autogenous shrinkages and improving the mechanical properties of concrete. Two types of concretes, one with 10 vol.% replacement with PCCA and the other with no replacement, were prepared. Eight RC beams were prepared and two beams each were tested for two temperature conditions, namely, high temperature at early age and room temperature. The former simulates temperature history in mass concrete. The water to cement ratio was 50%. All specimens were sealed immediately after casting up to the loading test ages.

sustainable construction materials and technologies

Effects of Roof Tile Waste-Coarse Aggregate and High Temperature History at Early Ages on Shear Strength of Reinforced Concrete Beams Made of Portland Blast-Furnace Slag Cement Type B