Influence of Fly Ash on the Performance of Recycled Aggregate Concrete

2016 International Journal of Science and Research (IJSR)  
Waste arising from construction and demolition constitutes one of the largest waste streams within the developed and developing nations. The rapid growth in construction and depleting natural resources demands the recycling and reusing technology to be adopted in construction field. The use of recycled coarse aggregate (RCA) and fly ash (FA) is one of theapproaches towards this need.Use of RCA and FA in concrete can be useful for environmental protection and economical terms. In this
more » ... In this experimental study the natural coarse aggregate (NCA) is replaced with RCA at different percentage and the mechanical strength of concrete is tested. In addition the FA is introduced as replacement of Cement.The objective of present study is to determine the sustainability of RCA as an alternate material to NCA and to compare the workability, density and compressive strength result using FA. The mix designing is done for water cement ratio 0.5. Cubes are casted by replacing virgin aggregate and cement with 10%, 20%, 30%, 40% RCA and FA and compressive strength is checked. Obtained results are then used to establish an empirical relationship between the strength of concrete by using percentage of RCA and percentage of FA. Results shows that RCA and FA up to 30% can be used for making concrete.
doi:10.21275/v5i6.nov164600 fatcat:2gyxus3jw5cjxg4we5g4wis5my