Hycrete W500 is a concrete waterproofing admixture that significantly reduces water ingress through concrete. Ordinary concrete absorbs water and dissolved salts through its network of pores, leading to water infiltration and corrosion of steel reinforcement. Hycrete W500 reduces absorption and forms a protective coating around steel reinforcement. Less water and fewer chlorides are able to penetrate the concrete and the reinforcement has enhanced protection from corrosion Hycrete W500 delivers consistent and reliable performance and iseasy to use.
Hycrete W500 is an environmentally-responsible, Cradle to CradleTM certified product. Using Hycrete W500 allows owners and builders to have the comfort of knowing their investment/project remains secure against one of nature’s most damaging elements …water.

Hycrete W500 is sold by the gallon. It is sufficient to treat one cubic yard of concrete.
Product datasheet:
Hycrete Datasheet - W500.pdf