Question

I have research project about "''ENHANCEMENT OF CONCRETE PROPERTIES COMPRISING SILICA FUME AND FLY ASH''

Can you write an abstract about that title please?

thanks

Answer 1

Concrete is the most adaptable construction material because it can be designed to stand in tough environment condition. Nowadays, most concrete contains supplementary cementitious material which forms part of the cementitious component. The main benefits of Supplementary cementing materials (SCMs) are their ability to replace certain amount of cement and thus reducing the cost of using Portland cement. The fast growth in industrialisation has resulted in tons of by-product or waste materials, which can be used as SCMs such as Fly Ash, Silica Fume, Ground Granulated Blast Furnace Slag, Steel Slag, etc. The use of these by-products not only helps to utilise these waste materials but also enhances the properties of concrete in fresh and hardened states. The most successful SCM is silica fume because it improves both strength and durability of concrete and the addition of silica fume for design of high strength concrete. To design high strength concrete good quality aggregates is also required. In the present work a series of tests were carried out to make comparative studies of various mechanical properties of concrete mixes prepared by using OPC 43 grade cement. The mixes are modified by 7.5%, 10% and 12.5% of silica fume in replacement. After optimizing the percentage of silica fume, the silica fume is then blended with fly ash, keeping the percentage of cement fixed.