Environmental Impact of Geosynthetics in Coastal Protection

Materials

Franz-Georg Simon¹  Philipp Scholz¹  Ingrida Purina²  Ieva Barda²  Ieva Putna-Nimane²  Evita Strode²  Ineta Liepina-Leimane²  Boris Chubarenko³  Alexandr Kileso³  Elena Esiukova³ 

[1] BAM Bundesanstalt für Materialforschung und -prüfung, 12200 Berlin, Germany;Latvian Institute of Aquatic Ecology, 1007 Riga, Latvia;Shirshov Institute of Oceanology, Russian Academy of Sciences, 117997 Moscow, Russia;

关键词: geosynthetics;    geotextiles;    dynamic surface leaching test;    artificial ageing;    marine littering;   

DOI  :  10.3390/ma14030634

来源: DOAJ

【 摘 要 】

Geosynthetic materials are applied in measures for coastal protection. Weathering or any damage of constructions, as shown by a field study in Kaliningrad Oblast (Russia), could lead to the littering of the beach or the sea (marine littering) and the discharge of possibly harmful additives into the marine environment. The ageing behavior of a widely used geotextile made of polypropylene was studied by artificial accelerated ageing in water-filled autoclaves at temperatures of 30 to 80 °C and pressures of 10 to 50 bar. Tensile strength tests were used to evaluate the progress of ageing, concluding that temperature rather than pressure was the main factor influencing the ageing of geotextiles. Using a modified Arrhenius equation, it was possible to calculate the half-life for the loss of 50% of the strain, which corresponds to approximately 330 years. Dynamic surface leaching and ecotoxicological tests were performed to determine the possible release of contaminants. No harmful effects on the test organisms were observed.

【 授权许可】

Unknown