The Repair SolutionXypex’s unique crystalline technology was chosen as the preferred repair solution. Xypex’s proprietary chemicals react with the natural by-products of cement hydration in both new and existing concrete, forming a non-soluble crystalline structure within the inter-connected cracks, capillaries, pores and voids in the concrete. In this way, the crystalline formation becomes a permanent, integral part of the concrete matrix itself, preventing the ingress of water and other liquids even under hydrostatic pressure and protecting the concrete in harsh, aggressive conditions. The four major products used in this rehabilitation project were all based on Xypex Crystalline Technology: