A unique chemical treatment for the waterproofing, protection and improvement of concrete and any other variation of Portland cement mixture. XYPEX ADMIX C-500 NF is added to the Portland cement mix at the time of batching. Xypex Admix C-500 NF consists of Portland cement and various active, proprietary chemicals. These active chemicals react with the moisture in fresh mixtures and with the by-products of cement hydration to cause a catalytic reaction. This reaction generates a non-soluble crystalline formation throughout the pores and capillary tracts of the mixture that permanently seals the application and prevents the penetration of water and other liquids from any direction.