(PDF) Replacement of Natural Sand with Robo/Artificial Sand …
IV. ROBO SAND AND PROPERTIES The artificial/robo sand produced by proper machines can be a better substitute to river sand. The sand must be of proper gradation (it should have particles fro m 150 microns to 4.75 mm in proper proportion). Robo sand is a purified form of quarry dust with is excreted fro m manufacturing of coarse aggregate.