Role of surrounding soils and pore water in calcium carbonate precipitation in railway tunnel drainage system
| Autor: | Zilong Wu, Yu-Jun Cui, Antoine Guimond Barrett, Miguel Mellado Moreno, Yongfeng Deng |
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| Přispěvatelé: | Laboratoire Navier (NAVIER UMR 8205), École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel, Laboratoire Navier (navier umr 8205), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS), SNCF Réseau [La Plaine st Denis], Nanjing Southeast University |
| Rok vydání: | 2019 |
| Předmět: |
Water table
Calcium carbonate dissolution 0211 other engineering and technologies Transportation Soil science 02 engineering and technology Fines fraction chemistry.chemical_compound Pore water pressure [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] 021105 building & construction Electrical conductivity medicine Tunnel drainage Precipitation Calcium carbonate precipitation Drainage system (agriculture) 021101 geological & geomatics engineering Civil and Structural Engineering geography geography.geographical_feature_category pH values Geotechnical Engineering and Engineering Geology medicine.disease 6. Clean water Calcium carbonate chemistry Soil water Environmental science Calcification |
| Zdroj: | Transportation Geotechnics Transportation Geotechnics, Elsevier, 2019, 21, pp.100257. ⟨10.1016/j.trgeo.2019.100257⟩ |
| ISSN: | 2214-3912 |
| DOI: | 10.1016/j.trgeo.2019.100257 |
| Popis: | International audience; Calcium carbonate (CaCO3) precipitation in tunnel drainage system poses serious problems to railway tracks. In this study, the calcification phenomenon identified in Meyssiez tunnel was analyzed through laboratory testing and site water monitoring. In particular, the surrounding soils were investigated in the laboratory. Site water table was regularly monitored in the field and site water was taken for laboratory analyses in terms of pH and electrical conductivity (EC). Examination of the test results showed that the calcification phenomenon was mainly induced by the calcium carbonate dissolution in the fine fractions (d |
| Databáze: | OpenAIRE |
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