Partial Replacement of Fine Aggregates with Quarry Dust in Concrete Pavements

The study aims to determine the strength properties of concrete by replacing sand with quarry dust for M30 grade with 20%, 25% and 30% replacement. It is observed that for 20% of quarry dust (3 days, 7 days, 28 days) the average compressive strength is 22.58N/mm?, 25.02N/mm?, 36.66N/mm? where as for natural sand it is 20.56 N/mm?, 23.15N/mm?, 35.45N/mm? respectively. For 25% quarry dust (28 days) the strength increased to 36.82N/mm?, for 30% it is 37.76N/mm? instead of 35.45N/mm? for sand. The properties of quarry dust are as good as fine aggregates in replacement with sand in the cement concrete