Performance of Light Weight Concrete Replacing Coarse and Fine Aggregates with Cinder and Fly Ash

Authors : Sanjana M, Suha, Mahesh Babu V, Manjunatha L


One of the negative aspects of conventional concrete is having high self-weight. This heavy self-weight will make it to some extent an uneconomical structural material. Light weight concrete having low density, reduction of dead load and to boom the thermal insulation can be an alternative. The reduction in density produced by the usage of alternative light weight coarse aggregate partially in concrete can be one of the solution. In this Study an attempt has been made to examine the conventional concrete and light weight aggregate concrete for M20 Grade by partially replacing Natural Course Aggregate with Cinder and complete replacement of sand with Fly Ash Granules. Light weight concrete is made by means of Partial replacement of Coarse Aggregate with unique ratios of Cinder ranging from 20%, 40%, 60% and 100%. This project is centered to obtain the compression strength, flexural strength and split tensile strength parameters of light weight aggregate concrete to find the favorable replacement with the above-mentioned replacements. From this study it is concluded that percentage reduction in Strength is balanced by percentage reduction in weight due to addition of light weight Cinder by which total dead weight of structure reduces and there by structural component can be designed using lower strength materials due to reduced bending moments, shear forces and axial forces.

Key words: Cinder, Fly ash Granules, Coarse Aggregate, Fine Aggregate, Compressive Strength, Split Tensile Strength, Flexural strength