ANTI-HYDRO is extensively recommended for integrally water-proofing concrete. It has been successfully used since 1904 in all types of structures to waterproof concrete and to improve its workability, strength, hardness, and durability. Installations include foundations, elevator pits, sewage and water treatment plants, seawall construction, tunnels, underground utility construction, slabs-on-grade, exposed exterior concrete, tanks, tilt- ups, countertops, pre-casts and pavements.