CrownStone TD, System No. 311 is a 100% Solids, 100% reactive, moisture-insensitive non shrink, 3 component, Epoxy Polymer Mortar formulated to be hand or power-troweled applied at a typical thickness of 3/16 - 1/4 in. Crown TD cures to very tough and durable, dense mortar for applications demanding a superior abrasion wear and impact resistance