Abstract
In recent years, emphasis has shifted from using high strength material to highly durable material, to fulfill the demands of sustainable construction. Concrete made with ternary blend of ordinary Portland cement (OPC), silica fume (SF), and fly ash (FA) is a judicious choice before the construction industry for obtaining highly durable concrete. This paper reports the effect of replacement of OPC by FA (20, 30, 40, and 50% replacement of OPC) and/or SF (7 and 10%) on the mechanical and durability properties at w/ b ratio of 0.3 and 0.4. The influence of crack and crack width on half-cell potential (HCP) measurement, conducted on uncracked and cracked specimens, was studied, which showed that ternary cement blend concrete was superior to OPC concrete even in cracked condition. As crack width increases, the HCP readings tend to be more negative, indicating higher probability of corrosion activity.
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