Experiment of Fly-Ash Mix Sio2 for Variation of Strength in Geopolymer Concrete - A Review

This work focuses on studying the effect of fly ash Nano-Silica 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 4 different concrete mixture were cast and tested with different cement replacement levels of Fly ash (FA) with nano Nano-Silica (NS) as addition 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. The materials used to design the mix for M20 & M30 grade of concrete are cement, sand, coarse aggregate, water and Fly-Ash SiO2. Three specimens are tested for typical category and the mean compressive strength of three specimens is considered as the compressive strength of the specified category of concrete.