This special concrete product of Çimsa was specially developed following the tests carried out in accordance with the TS EN 12390-8 standard with a water penetration depth of less than 30 mm, considering the effect that the groundwater will create on the structure. The product is particularly designed to offer structural impermeability in accordance with the requirements of the insulation method and material selection instructed as per the waterproofing regulations for buildings. The product offers a long-lasting construction solution in building foundations, all horizontal and vertical structural elements, bridges and port structures.