Possibilities of Hydrophobization of Masonry Construction for High Risk Flood Areas

Most masonry materials exhibit a relatively high open porosity and water absorption which in case of flooding of the building with water leads to an enormous increase in the moisture content in the masonry, which has a negative impact on its properties and often also on its lifespan. With the modification of the properties of masonry elements and surface coatings as well as the choice of appropriate technology, foundation masonry and brickwork can radically reduce the absorption of the whole structure and largely eliminate the risk of structural damage during the flooding. The paper deals with the development of water-repellent masonry units and construction of watertight and waterproof masonry structures.