Diffusion and absorption of moisture and aggressive substances into the concrete through the interconnected pores and cracks are the main processes of reinforced concrete structures deterioration. Xypex crystalline formation modifies microstructure of the concrete by blocking the pores and healing the cracks permanently. This technology can be introduced to the existing concrete structures as a coating system or to the under construction structure as an admixture. Furthermore, Xypex provides permanent and reliable solutions for concrete repair and rehabilitation. Xypex database, which includes more than 150 testing reports conducted by independent parties, is strong documentation confirming high performance of Xypex crystalline technology exposed to extreme hydrostatic pressure and severe environmental conditions.