Experimental Investigation Of Using Concrete Waste And Brick Waste As A Coarse Aggregate

ABSTRACT To generate a study on concrete which incorporate Over Burnt Brick Ballast and concrete waste partially due to their abundance. 25%, 50% (M15, M25) incorporation was used as partial replacement of natural coarse aggregate in concrete. Analysis of incorporated concrete was done in fresh state as well in hardened state to evaluate different properties of concrete i.e. slump, compaction factor test, unit weight, and compressive strength are evaluated. From all the results and experimental approach it is concluded that Concrete formed with over burnt brick ballast and concrete waste aggregate showed beneficial performance as compared with the concrete made up of natural aggregate obtained from local resources. It reduces the cost of concrete by reducing the aggregate cost and produces economical infrastructure system. It has been observed that the use of waste materials results in the formation of light weight concrete. Uses of such waste materials will not only cut down the cost of construction, but will also contribute in safe disposal of waste materials. Apart from the environmental benefits, the addition of such wastes, also improves certain properties of resultant concrete. Cubes of concrete were prepared and tested to study the compressive strength. The results were compared with concrete made with river wash gravel as coarse aggregates which at present is the only coarse aggregate. It can be concluded that by reducing the water-cement ratio from 0.60 to 0.40 the compressive strength of crushed over burnt bricks - sand concrete and gravel - sand concrete increase by more than 30%. Use of broken over burnt bricks as coarse aggregate for structural concrete is recommended when natural aggregate is not easily available, high strength of concrete is not required and the bearing capacity of the soil is low.