Structural Analysis of Polyurethane Bonded Aggregate on Block Revetments

For centuries dikes in the Netherlands have been protected against wave attack by revetments constructed of pitched blocks. Due to new insights into the behaviour of pitched blocks and increased hydraulic boundary conditions, a significant part of those dikes does not meet the current prescribed standards and safety norms anymore. As a result,...

The use of Elastocoast in breakwater research

In this report will be explained how breakwaters can be made with the use of Elastocoast, a sort of glue. This makes it possible to fix the individual rocks, and allows repetitive tests possible with exactly the same layer properties. We made six samples of breakwater rock layers, made with Elastocoast and stones, which can be placed and tested...

Duurzaamheid van Elastocoast

In dit onderzoek is een voorzet gemaakt voor een sterktebeproeving van verouderd Elastocoast door middel van cilindrische proefstukken. Daarnaast is een vervolgevaluatie gemaakt van de proefvakken bij Petten en Zuidbout, alsmede een eerste evaluatie van het productievak Elastocoast bij Bath langs de Oosterschelde.

Polyurethane bonded aggregate revetments design manual

In this manual design rules and guidelines for the design of Polyurethane Bonded Aggregate revetments (PBA-revetments) are presented, based on results from laboratory research, full scale model tests, and experience and field measurements. Research is still ongoing, but from the first results some insight into the structural behaviour of PBA can...

Hydraulic performance, wave loading and response of Elastocoast revetments and their foundation - a large scale model study -

ELASTOCOAST revetments are highly porous structures made of crushed stones which are durably and elastically bonded by Polyurethane (PU). To improve the understanding of the physical processes involved in the wave-structure-foundation interaction and to develop prediction formulae for both hydraulic performance and wave loading more than 75...

Bemessung und Kostenuntersuchung für das elastomere Deckwerk ELASTOCOAST und konventionelle Deckwerke für den Küstenschutz

Cost comparision of an Elastocoast revetment in comparison with a classical revetment in coastal protection.

Recent laboratory tests with elastomeric revetments

A new construction method of Polyurethane (PUR)-bonded revetments has been tested successfully on various locations in Germany, in the Netherlands, in France, and in the UK. See also the presentation of Bijlsma on this ICE breakwater conference. This year a series of large scale test in the GWK-facility in Hannover have been executed. This...

Recent laboratory tests with Elastomeric revetments

A new construction method of Polyurethane (PUR)-bonded revetments (Elastocoast) has been tested successfully on various locations in Germany, in the Netherlands, in France, and in the UK. See also the presentation of Bijlsma on this conference. This year a series of large scale test in the GWK-facility in Hannover have been executed. This...

Analysis of wave impact on the elastocoast system

The elastocoast system can be used as an armour layer on revetments. The bonding system exists of a mix of crushed stones and 2-component polyurethane. This bonding system creates bonding forces between the stones and an open (porous) structure can be obtained. Elastocoast is developed by Elastogran GmbH, a BASF subsidiary. The response of an...

Elastocoast pilots in the Netherlands: 2008-2009 extended monitoring

From 2004 to 2007 several pilot tests with an Elastocoast revetment were constructed along the North-Sea islands in the most northern part of Germany. In 2007 Elastocoast was introduced to the Dutch market. Arcadis supervised the construction and monitoring of two prototype pilots in the Netherlands. (September 2007) Revetment on a rudimentary...

Elastomeric revetments: A new way of coastal protection

A new construction method of Polyurethane (PUR)-bonded revetments has been tested successfully as stable breakwater constructions on various locations in Germany (“Hamburg Hallig”, “Holm Gröde”), as dike revetment in the Netherlands (breakwater revetment in Zuidbout and Petten), as shoreline protection in France (canal embankment near Le Havre),...

The Elastocoast® system: A study of possible failure mechanisms

Elastocoast is a new type of revetment system for use as a cover layer on dikes. It consists of granular material (rocks), which is fixed together with a two-component polyurethane adhesive. In the Elastocoast system each individual rock is covered with a thin film of polyurethane. When the adhesive is cured, this film fixes the rocks together...

Elastocoast pilots in the Netherlands, storm season 2007/2008

In September 2007 two prototype pilot tests were constructed along the Dutch coast with an experimental, polymer based revetment. An area of 490 m2 was put on a dike slope in the Eastern-Scheldt basin, and another 385 m2 on the horizontal surface of a beach groyne near the Pettemer Zeewering along the North-Sea coast. The revetment consists of...

Early colonization of littoral communities on polyurethane coated substrates: A field and laboratory study

Materials used for urbanized coastal structures often create a hard substra te ready to be colonized. Elastocoast, a new coastal protection material made from stones and polyurethane, is such a material. This study examined the recovery and growth during the winter of 2007-2008 of the biological community on two dykes in the Netherlands which...

Preliminary study of pur-revetment's application

PUR-revetment is a newly developed method for hydraulic application. Its structure is similar to that of open stone asphalt revetment, but the crushed stones are glued by polyurethane (PUR) instead of bitumen. To study the feasibility of applying PUR-revetment, a research based on the comparisons between PUR-revetment and open stone asphalt...

Hydraulic properties of PUR-revetments compared to those of open stone asphalt revetments - Some mechanical properties of elastocoast for safety investigations of dikes (VTV2004)