Abstract
This study is aimed at investigating durability properties of fibre reinforced concrete. The sorptivity test to assess rate of absorption, and the rapid chloride penetration test was performed to assess the permeability of concrete. The weight loss and strength loss measured after 28 and 56 days immersion in 5% concentrated HCL, H2SO4 solution to check aggressive ions of concrete, such as chlorides and sulphates. Normal concrete is used for the above assessment. The addition of nano silica by fractions such 0%, 1.5%, 3.0%, and 4.5% by weight of cement. For each of above combination 1% steel and 0.25% polypropylenes fibres respectively by volume of binders were added. A constant aggregate binder ratio and water binder ratio were maintained throughout this investigation process. At the end of above testing, the aim is to find out optimum percentage combination of ultra fine fly ash and nanosilica to achieve better durability of concrete.
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