Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
New PU composite is expected to extend German North Sea defenses
A 3,000 m2 extension of a North Sea shoreline erosion-control effort on islands off the north western coast of Germany included the installation of more than 20 metric tons of a new polyurethane-mixture coating last summer. The Elastocoast resin system, developed by BASF subsidiary Elastogran, is proceeding with shoreline protection projects in partnership with the Institute of Hydraulic Engineering (IHE), Hamburg-Harburg, Germany. The most recent deployment was during July 2007 at Hallig Gröde, part of the Frisian Archipelago. Traditional coastal protection has usually used rigid materials such as concrete or asphalt. But these have proven both costly to install and prone to rupture under severe conditions. This new elastomer system is a mixture of polyurethanes and a rock/stone aggregate. Elastomer revetments utilize the property of polyurethanes by creating permanent and elastic bonds with stone surfaces. This creates sturdy, porous but very resistant revetments. The liquid, a two-component, plastic polyurethane is stirred on-site and then mixed with the crushed stone. The mixture even hardens underwater. The PU resin system claims to be an ecologically sound solution that has no harmful impact on aquatic life. Further, the PU/rock-enveloped blanket can cut costs because of its relative ease of installation. Dike systems are only one of many possible application sites for the polyurethane/crushed stone revetments. Along coastlines, they could also protect harbour installations, flood barrages, riverbank promenades, and banks of inland waterways.
New PU composite is expected to extend German North Sea defenses
A 3,000 m2 extension of a North Sea shoreline erosion-control effort on islands off the north western coast of Germany included the installation of more than 20 metric tons of a new polyurethane-mixture coating last summer. The Elastocoast resin system, developed by BASF subsidiary Elastogran, is proceeding with shoreline protection projects in partnership with the Institute of Hydraulic Engineering (IHE), Hamburg-Harburg, Germany. The most recent deployment was during July 2007 at Hallig Gröde, part of the Frisian Archipelago. Traditional coastal protection has usually used rigid materials such as concrete or asphalt. But these have proven both costly to install and prone to rupture under severe conditions. This new elastomer system is a mixture of polyurethanes and a rock/stone aggregate. Elastomer revetments utilize the property of polyurethanes by creating permanent and elastic bonds with stone surfaces. This creates sturdy, porous but very resistant revetments. The liquid, a two-component, plastic polyurethane is stirred on-site and then mixed with the crushed stone. The mixture even hardens underwater. The PU resin system claims to be an ecologically sound solution that has no harmful impact on aquatic life. Further, the PU/rock-enveloped blanket can cut costs because of its relative ease of installation. Dike systems are only one of many possible application sites for the polyurethane/crushed stone revetments. Along coastlines, they could also protect harbour installations, flood barrages, riverbank promenades, and banks of inland waterways.
New PU composite is expected to extend German North Sea defenses
Neue Polyurethan-Stein-Verbundmatte in ERprobung zum Küstenschutz an der deutschen Nordseeküste
Geosynthetics ; 25 ; 22-25
2007
4 Seiten, 4 Bilder
Aufsatz (Zeitschrift)
Englisch
Restructuring expected to extend into next century
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