is there any disadvantage if we use quartz silica sand in wall plastering,brick laying and concrete work .?

Question

cement manufacturer add quartz silica sand in their cement in place of river cement,and for cement testing for their good quality they prefer standard quartz silica.why river sand avoided to mix.In place of river sand we want to use quartz silica sand for making cement mortar for plastering, bricklaying,concrete work for buildings due to its electrical resistivity with a purpose of VASTU DEVELOPMENT IN INDIA.Cracks develops much if we use river sand and cement defame due to river sand..

Answer 1

The river sand contains minerals other than silica/quartz and these other minerals are weakening your mortar. You should stick with quartz silica sand... there will be no disadvantages with it.