Strength and durability performance of self compacting concrete containing self-combusted rice husk ash and metakaolin

Abstract

In this study, the effects of ternary system on corrosion behaviour of self compacting concrete containing self combusted rice husk ash (SCRHA) and metakaolin (MK) were studied. For that different mix proportions were prepared by replacing ordinary Portland cement (OPC) with SCRHA and MK. The OPC was replaced from 0% to 30% by SCRHA or MK as a binary system, whereas from 0% to 40% by SCRHA and MK as ternary system. In order to assess the properties of blended self compacting concrete (SCC), various tests were conducted for fresh state properties (Slump flow test, V-funnel test and L-box test), Strength properties (Compressive strength and splitting tensile strength) and durability properties (Rapid chloride penetration test and potential time study for steel corrosion). From the test results, 15%SCRHA, 10%MK and 10%SCRHA + 10%MK blended SCC showed good performance against all fresh, strength and durability properties. The test results also indicated that OPC properties can be effectively modified by the ternary system of SCRHA and MK and enhance various SCC properties.