Design and safety assessments of dike revetments. Development of design tools and methods to perform safety assessments on asphaltic dike revetments.Non destructive testing of dike revetments with the use of falling weigth deflectometer (FWD) and ground penetrating radar (GPR).Determination of the strength of materials with various laboratory tests.Stiffness and fatigue testing of asphaltDevelopment of a test set-up to determine te stiffness of road base and sub base materials with the us of a light weight deflectometerSpecialties: hydraulic engineering, design of asphalt dike revetments and sea walls lined with asphalt, development of Golfklap, a model to determine the impact of of waves on plate revetments