E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
E02B3/126—Flexible prefabricated covering elements, e.g. mats, strips mainly consisting of bituminous material or synthetic resins