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Geomembranes for tunnel constructions – Applications, properties and release of pollutants
Author(s) -
Lühr HansPeter
Publication year - 2020
Publication title -
geomechanics and tunnelling
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.317
H-Index - 18
eISSN - 1865-7389
pISSN - 1865-7362
DOI - 10.1002/geot.202000014
Subject(s) - geomembrane , pollutant , groundwater , leaching (pedology) , compatibility (geochemistry) , waste management , plasticizer , environmental engineering , environmental science , membrane , engineering , forensic engineering , geotechnical engineering , chemistry , chemical engineering , soil science , organic chemistry , biochemistry , soil water
The sealing of tunnel walls involves the use of membranes which, depending on the situation, are constantly exposed to the leaching action of groundwater, or of water emanating from the surrounding rock. In terms of ecological product compatibility, the question arises as to whether pollutants may be released in the process. Various geomembranes are examined in more detail and subjected to an evaluation system. It emerges that in particular geomembranes with especially worrying components such as phthalates should generally be kept away from the environment for precautionary reasons, even though some phthalate plasticisers have not yet been evaluated by the EU. Phthalates are characterised by the fact that they are released from the membranes in considerable quantities.