An experimental investigation on the mechanical properties of bottom ash concrete

Abstract

In this research Quarry (manufactured) sand is used as hundred per cent substitutes to the river sand. Pozzolona Portland Cement was replaced by silica fume (10% by weight) and hyperplasticizer with varying percentage by weight of binder was added to obtain medium workability. In modern thermal power plants, 20% of ash is fed into the bottom of boilers. To solve the problem of the bottom ash disposal from the power plant, the investigations were carried out for the possibility of using bottom ash as partial replacement (10% - 50%) of manufactured sand (M-Sand) in concrete. Mechanical properties, such as compressive strength, split tensile strength, flexural strength and modulus of elasticity of M60 concrete (Grade of mix 60N/mm2) were evaluated. The result showed that use of bottom ash improves the strength of concrete at later ages.