An Experimental Study on Reactivity of Silica Fume and Copper Slag in Concrete

Abstract

With potential hazardous effects and increased environmental awareness, utilization of
industrial by-products has become very popular alternative to disposal. Silica fume is a fine
powder collected as a by-product of the silicon and ferrosilicon alloy production.Portland
cement is the most important constituent of concrete and relatively high cost material. Large
scale production of cement is causing depletion of natural resources and causing
environmental problems. A certain percentage of silica fume as a replacement of cement and
copper slag as a replacement for fine aggregate can improve some mechanical properties of
concrete like compressive strength, split tensile strength and flexural strength etc. In this
study cement replaced for 15% but fine aggregate replaced at different varying percentage
from 0% to 50%. To fulfill the objective of this study some properties of concrete containing
silica fume were evaluated after 7,14 and 28 days of water cuing