Motivation and Objectives
Due to the impacts of the climate change with a possible increasing storm activity and an increasing sea level, the development of innovative structures for coastal protection with adjusted requirements, e.g. a larger stability, are necessary. Porous revetments made of crushed stones durably bonded by polyurethane or by any other type of binding material are therefore increasingly used for coastal protection, because they have several advantages as compared to conventional revetments. To realize the protection of heavily loaded coasts, the application of conventional, non-bonded revetments would lead to increasing weights of the revetment elements. In bonded porous revetments a force-fit and sometimes even flexible connection between the single elements exists, which can be induced by different bonding agents. Especially if large stone classes to ensure the hydraulic stability are not available, the application of bonded porous revetments could lead to significant cost reductions without reducing hydraulic stability or safety aspects. Consequently, an increasing need in engineering practice of these kind of revetments is likely in the future.