Compressive Strength Evaluation of Mortars Containing ISF Slag and Marble Powder

Abstract

Increase in utilization of conventional aggregates by the construction sector has led to the depletion of natural resources, raising concerns with regard to their conservation. To address these issues, attempts have been made to utilize industrial wastes as fine aggregate in construction materials. In the present study industrial waste such as ISF slag and marble dust have been used in cement sand mortars of ratio 1:3, 1:4, 1:5 and 1:6 as fine aggregate. Sand is replaced by ISF slag at substitution intervals of 25% from 0 to 100%. A comparison of compressive strength of these mortars mixes has been made. It was observed, for richer mixes compressive strength increased to 120% of the control mix for 50% substitution. Similarly, trial mixes with 50% slag were tested with addition of marble dust replacing natural sand in the range of 10 to 50%. It was observed that, combination of marble dust with ISF slag resulted in maintaining the 20% higher compressive strength achieved earlier for the 50% substitution of ISF slag.