Effect of Cement Containing Binary Blended Bagasse Ash-Fly Ash on Physical and Mechanical Properties of Concrete

Abstract

This research aimed to investigate the effect of cement containing binary blended bagasse ash andfly ash on physical and mechanical properties of concrete namely slump, unit weight, air content,compressive and flexural strengths. The studied parameter was the percentage replacement of cement bybagasse ash and fly ash at 0, 20, 30, and 40 by weight of cementitious materials. The constant ratio ofbagasse ash to fly ash of 60:40 by weight was used in this study. The test results showed that the slump andunit weight of concrete slightly decreased with the increase percentage replacement of bagasse ash and flyash, however all mixes appeared to yield the comparable air content to that of the control mix. The strengthof concrete decreased as the percentage replacement of bagasse ash and fly ash increased. The compressivestrength at the ages of 3 and 7 days of concrete containing bagasse ash and fly ash was lower than thecontrol concrete but concretes containing bagasse ash and fly ash at 20% and 30% by weight of cementitiousmaterials had higher compressive and flexural strengths at ages of 28 days than and comparable to thecontrol concrete, respectively. As the results, the physical and mechanical properties of concretecontaining bagasse ash and fly ash at 30% by weight of cementitious materials were comparable to thecontrol concrete.