The Properties of Self-Compacting Concrete Using Fly Ash from Hongsa Power Plant

Abstract

This paper presents the investigation of properties of fresh and hardened concrete which combines of two cementitious materials, Ordinary Portland Cement (OPC) and Fly Ash (FA) from Hongsa Power Plant. The mixed proportion of concrete has been designed for 0.38 of water-binder ratio (w/p) and the replacement ratio of FA to OPC is 5% to 40% by mass which steps every 5% of FA. The total binders in the mixed proportion is 445kg/m3. The water reducing admixture which is Modified poly carboxylate type was used. The slump flow, T500, V-funnel and L-box were tested for investigation of the properties of fresh concrete. Then, compressive strength and tensile strength of concrete at 28 days of age were carried out for examining the hardened concrete properties. The results of study show that using cement combining with fly ash from Hongsa Power Plant improved the rheology of fresh concrete and the hardened concrete properties also have been improved dramatically.