AGED ASPHALTIC DIKE REVETMENTS ON (SATURATED) SAND TESTED IN A LARGE DELTAFLUME
AbstractIn the Netherlands, 600 km of the sea dikes are protected by an asphaltic revetment which must resist considerable wave loads with a significant wave height of up to 4.5 m. The subsoil is normally sandy, and the asphalt layer can fail as a result of fatigue due to repeated loading under storm conditions (Wichman & Davise 2016). Fifty years old asphalt has been taken from the Dutch Lauwersmeer dike and placed on a sand body in the large Deltaflume at Deltares, where it is possible to generate large waves (up to 4 meters). It is still unsure how the asphalt will fail, while interacting with the sandy subsoil, depending on the position of the phreatic line, among other factors.
Fuhrböter, A. & U. Sparboom (1988). Shock pressure interactions on prototype sea dykes caused by breaking waves. Modelling Soil_Water_Structure Interactions, 243-252, Balkema, ISBN 90 6191 8154.
Wichman, B.G.H.M. & M.P. Davidse (2016). Fatigue of asphaltic dike revetments under wave loading: validation and improved modelling. Int. J. of Pavement Eng. Vol. 19, No.2, 131-144.