Five Star Structural Concrete forms an integral high strength bond to existing concrete exceeding 2500 psi and requires no bonding agent. It provides optimal dimensional stability, gains strength rapidly, and has extremely low permeability to resist oils, salts, and chemicals. Workers can place it horizontally, vertically, or overhead. It can be poured, troweled, pumped, or shotcreted. Five Star Products. 203-336-7900.