A Comparative Study on Strength of Concrete Using Wood Ash as Partial Replacement of Cement

Abstract

The study here presents the conduct of wood ash as partial replacement by weight of cement in concrete. Portland cement as a binder in concrete is one of the fundamental development materials generally utilized particularly in creating nations. The expanding demand for cement can be met by partial replacement of cement. And also involves use of a waste product to create eco-friendly alternative supplement to binding in concrete. Two wood ashes from two different sources of woods were picked for the examination. The concrete mixes were blended with 0%, 10%, 15%, 20% and 25% from two sources of wood ash as a partial replacement by weight of cement and tested for compressive strength respectively. M25 grade of concrete was prepared for the examination. Concrete cubes were casted and cured for 7 and 28 days respectively, for test results. Shear slump was seen with the incorporation of wood ash in concrete which indicates the harshness of the mix because of less use of cement. Test outcome indicated that the wood ash is marginally pozzolanic, water demand increments as the wood ash increments in concrete mix consequently admixture was required to increase the workability of concrete mix. Just one type of wood ash indicated positive outcomes when compared with standard mix limits. Therefore 10% WA1 partial replacement showed highest value of strength however, our examination recommended wood ash as low potential to partial replacement of cement and composition of different types of wood ash may wary thus influencing the properties of concrete.