Analysis of Concrete Cubes Mixed with Silica Fumes To Enhance Their Properties

Silica fume, also known as micro silica, is a byproduct of the reduction of high-purity quartz with coal in electric furnaces in the production of silicon and ferrosilicon alloys. Silica fume is also collected as a byproduct in the production of other silicon alloys such as ferrochromium, ferromanganese, ferromagnesium, and calcium silicon. Before the mid-1970s, nearly all silica fume was discharged into the atmosphere. After environmental concerns necessitated the collection and landfilling of silica fume, it became economically justified to use in various applications. Present work is an explanation of experimenting the concrete mixture of M15 and M20 grades of concrete by replacing about of 30% silica fumes sand. A constant water/cement ratio has been followed during experiment and comparing the results of compressing strength. With the help of this project report we can find out an appropriate operation for a particular red sand stone dust sample. This decreases the need of vast area for removal of red stone dust which in turn causes significant damage to the environment. The usefulness of red sand stone powder in a particular work for mixing in M15 and M20 grades of concrete replacing the cement and sand has been proved in context of the significant results obtained. Workability of concrete is the ease with which the concrete can be handled, placed and transferred .The workability of concrete depends on several factors but water plays a major role. The quantity of water added slightly more or slightly less may affect the workability of concrete. Industrial waste like red stone powder may replace the sand in case the availability of sand is less and far off the site. Hence silica fumes powder can be used by replacing a fixed percentage of sand not only maintains the economy of project but also to manage the industrial waste.