Effect on Strength of Concrete by Partial Replacement of Ordinary Portland Cement with Silica Fume

Abstract

Now a days, the increased use of scrap/waste as construction material has proved to be very harmful for the environment particularly in tropical countries like Pakistan. Researchers are trying at their best to reduce the adverse impact of waste material on the required environment but yet until more work is required in this regard. In this research paper authors have tried to reuse Silica Fume as construction material as it is very easily available in market as waste material from raw material /by-product industrial waste materials used in mills. The Authors obtained silica fume after proper screening the concerned industrial waste. These industries are available in grater quantity in the province of sindh. The required waste material is available in huge quantity. Silica is very important construction material and by using this as waste we can protect our environment by reusing or proper use of waste material. Here, researchers took different percentage of silica fume and mixed with concrete in varying ratio as replacement of Ordinary Portland Cement as active material in laboratory. Results were came, very interesting and found Tensile Strength, Compressive Strength and Flexural Strengths near to Ordinary Portland Cement also other properties of concrete like pH value, Slump, Curing and Temperature of Concrete shows satisfactory results at various percentage of Replacement with Ordinary Portland Cement. The research work has yielded the satisfactory results and the silica fume can be used effectively as an active construction material. Different percentage shows different results but at 5% and 10% mixing of silica fume indicated high strength as compare to ordinary cement mix and the controlled temperature 28 0 c. Further, Engineering is a vast field and it needs more research with passage of time.