Abstract—This paper focuses on studying the effect of fly ash silica fume and their combinations on compressive strength characteristics of high performance concrete. This work primarily deals with the compressive strength characteristics such as water absorption super plasticizer used in high performance concrete a set of 23 different concrete mixture were cast and tested with different cement replacement levels (0%, 2.5%, 5%, 7.5%, 10% and 12.5%) of Fly ash (FA) with silica fume (SF) as addition ( 0%,2.5%,5%,7.5% 10 % & 12.5% by wt of Cement and/or each trial super plasticizer has been added at constant values to achieve a constant range of slump for desired work ability with a constant water-binder (w/b) ratio of 0.30. Based on the test results the influence of such admixtures on compressive strength characteristics were critically analyzed and discussed.

Index Terms—High Performance Concrete, Fly Ash, Silica Fume, Compressive Strength, water absorption

Cite: H. S. Jadhav and R. R. Chavarekar, "Role of Fly Ash and Silica Fume on Compressive Strength Characteristics of High Performance Concrete," International Journal of Structural and Civil Engineering Research, Vol. 2, No. 1, pp. 32-39, February 2013.