Environmental friendly concrete using waste from petroleum industry

摘要

Environmental pollution is one of the most serious problems facing humanity and other life forms on our planet today. Industrial waste is very dangerous amongst all other wastes. So to discharge this industrial waste safely, it is recommended to make it useful in making some products. In this project Geolite Based Spent Catalyst (GBSC) is used to replace cement by some amount in concrete. GBSC is the waste product from petroleum industry. Here the aim of study was to obtain the optimum amount of cement that can be replaced by GBSC, to find the optimum design mix at which the strength of concrete is maximum at minimum cost. Initially trials were made on cement mortar and from the results it was decided to replace 25% and 35% cement by GBSC in concrete. Dose of super-plasticizer was decided from trial mixes to maintain the workability nearly 125 mm constant in all the mixes. Compressive, flexure and spilt tensile strength were measured at different age of concrete. Long term strength say at the age of 112 days strength was measured and results are encouraging. Initially the strength are slightly less but long term strength say after 90 days, strength is very nearer to the strength of pilot mix concrete..