EroGRASS: Failure of grass cover layers at seaward and shoreward dike slopes. design, construction and performance

A large number of the dikes in the North Sea and Baltic Sea regions are covered with grass that is exposed to hydraulic loading from waves and currents during storm surges. During previous storm surges the grass cover layers often showed large strength and remained undamaged. A clear physical understanding of the failure of grass cover layers...

Recommendations for implementation of clamping strength in SteenToets: Kennisontwikkeling t.b.v. SteenToets 2006 Onderdeel 1 Normaalkracht

This report belongs to the research programme on unknown aspects of Block Revetment systems. The stability of block revetments under wave loading is presumed to benefit from clamping forces. In previous studies a physical model for clamping forces was developed and verified. The existing design and design checking software code SteenToets...

Test result and analysis report on prototype tests on clamped revetments in Zeeland: Meet- en analyserapport proefnemingen op geklemde steenzettingen op dijken in Zeeland

Dit rapport is een onderdeel van het Onderzoeksprogramma Kennisleemtes Steenbekledingen. Het betreft onderzoek op deelplan 7.3 naar de kennisleemte omtrent de bijdrage van klemming aan de stabiliteit van steenbekledingen onder golfaanval. Het beschrijft de trekproeven en schuifproeven die in het veld zijn uitgevoerd ter verificatie van het...

State-of-the-art inventory

The present report provides a state-of-the-art inventory of relevant information and technical concepts for the ComCoast project, being the first phase of the research stages of Work Package 3 (WP3). This project was assigned to Royal Haskoning by CUR. The information scan was set-up in a systematic way. About 160 relevant references have been...

Laboratory testing of clamped placed revetments: Laboratoriumonderzoek betreffende klemming van gezette steenbekledingen

Dit rapport is een onderdeel van het Onderzoekzoeksprogramma Kennisleemtes Steenbekledingen. Het betreft onderzoek op deelplan 7.3 naar de kennisleemte omtrent de bijdrage van klemming aan de stabiliteit van steenbekledingen onder golfaanval. Er is een mechanicamodel beschikbaar voor de bijdrage van klemming. Dit model gaat uit van de...

Placed revetments under wave attack: Study of structural mechanics ( Gezette steenbekledingen onder golfaanval Mechanicastudie liggerwerking )

This report studies clamping phenomena in placed revetments on the Dutch dikes. One of the reasons of placing stones is that the stability of the single stones increases. Pull–out tests on single stones show a strength up to 10 times the single stone weight. In present standardized design methods for placed revetments there is no significant...

The use of asphalt in hydraulic engineering

Asphalt products have been used in the Netherlands in hydraulic engineering for a long time on a large scale, especially after the great disaster in 1953 when a large part of western Holland was flooded by the sea. After the disaster a great number of dikes had to be repaired very quickly and this was possible with the use of asphalt as a...

Regulation structures