The sand deposited along the bed of rivers in the country generally contains mica particles in fair proportions. While there is general awareness with regard to the deleterious effect of using micaceous sand on the properties of concrete, the experimental evidence bearing on that aspect is lacking. This aspect in concrete mix design has been investigated as removal of mica in sand by simple washing, wind blowing omr density separation method is not practicable. The experimental investigations were carried out with sand containing mica content ranging from 2 percent to 12 percent and studied its effect on compressive strength, split strength, workability and unit weight of concrete.

Mica, Muscovite, Biotite, Sub Area : Engineering Geology, Broad Area : Civil Engineering