... variety of cementation products, such as concrete, grouts, and mortars as well as elastomeric, polymer, refractory, ceramic and rubber ... acids, nitrates and sulfates.3.JH92Microsilica JH93 is a dry powder available in two forms,densified silica fume and ... fume 92% is used in cement.concret.ceramics and mortars etc. Mandatory chemical and physical requirementsStandard ValueSilicon Dioxide(SiO2 ...