Megamix II is a thick repair mortar used for patching and resurfacing deteriorated concrete. Specifically formulated to produce superior bond, low shrinkage, chemical resistance, and high strength, apply it with a trowel or by a low nozzle-velocity spraying method. It is recommended for rehabilitating water tanks, sewage treatment structures, concrete pipes, manholes, vaults and marine structures, and overhead applications. Xypex Chemical Corp. 800-961-4477.