PROASH is a pozzolan for concrete, consisting of the finally divided residue that result from the consumption of ground or powdered coal . the bulk of the particles formed are microscopic spheres. Light Grey in Color, and are of a much more rounded particle shape than Portland cement. A pozzolan reacts chemically with calcium hydroxide produced from the hydration of cement to form additional cementious content.
Standards: complies with ASTM C618 & BS 3892 part 1 .