Bituminous geomembrane

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Bituminous Geomembrane sample

Bituminous Geomembrane (BGM) is a type of geomembrane consisting of a reinforcing geotextile to provide mechanical strength and elastomeric bitumen (often called asphalt in U.S.) to provide impermeability. Other components such as sand, a glass fleece, and/or a polyester film can be incorporated into the layers of a BGM.[1] Bituminous geomembranes are differentiated from bituminous waterproofing materials used in buildings due in part to their wide roll width, which can exceed 5m, and their substantial thickness of up to 6.0mm.

These properties are designed for environmental protection, civil infrastructure, and mining applications.[2]

Properties[edit]

Typical Intrinsic Properties of Bituminous Geomembranes
Property Standard Units Value Application Relevance
Coefficient of Linear Thermal Expansion ASTM D 696 °C⁻¹ 10−5 A low coefficient of thermal expansion prevents problematic wrinkling with exposure to temperature variation.
Density ASTM D 792-20 g/cm³ 1.27 High density (greater than water) is useful for submersed applications, limiting wind uplift, and safer installation in windy conditions.
Elongation at Break ASTM D 7275 % >60 Elongation capacity combined with tensile strength provides toughness allowing light traffic during installation and accommodating differential settlement in service.
Friction Angle (sand side) NF EN 495-2 ° 39.5 A high friction angle allows for safer installation and greater slope stability.
Cold Bending - Lowest Temperature ASTM D 746 °C -20 Cold bending relates to the ability to use and manipulate the geomembrane in cold conditions.
Water Permeability ASTM E 96 m/s < 6.10⁻¹⁴ The extremely low water permeability of a BGM aligns with the high standards typical of geomembranes.
Gas Permeability (Methane Transmission Rate) ASTM D 1434-82 m³/(m2.d.atm) < 2.10⁻⁴ A useful index for gas barrier applications.

[3]

Bituminous geomembrane during installation on a mine tailings storage facility.

History[edit]

The earliest estimated use of bitumen dates back 40,000 years to the paleolithic age and the historical use of bitumen as a waterproofing layer is extensive and well documented.[4] Bitumen emulsion applied to polypropylene geotextiles was reported to have been used in a Navada heap leach mining installation as early as 1973. Published literature describing the modern development of the bituminous geomembrane can be traced back to the first double-liner system conceived of in 1974 by geosynthetics pioneer, J.P. Giroud. This novel bituminous geomembrane was made by spraying hot bitumen in-situ onto a polyester geotextile.[5] Soon after these early installations, factory manufactured BGMs were developed with factory impregnation of bitumen into the geotextile allowing a high standard of quality control. Spray applied BGMs went entirely out of favor by 1988.[6]

Partial List of Noteworthy BGM Projects
Project Country Type Date Completed
Le Pont-de-Claix Water Reservoir[7] France Water 1974
Ospedale Reservoir[8] Corsica Water 1978
Parc des Chanteraines France Water 1982, 2020
Manche storage centre[9] France Environmental Protection 1994
Ortolo Reservoir[10] Corsica Water 1996
La Galaube Dam[11] France Water 2000
Kildare Bypass[12] Ireland Transportation 2003
Diavik Diamond Mine[13] Canada Mining 2007
Kittilä mine[14] Finland Mining 2007, 2008
Las Bambas copper mine[15] Peru Mining 2012, 2014
Dolores mine[16] Mexico Mining 2013, 2014, 2017, 2020
St. George Regional Airport[17] United States Transportation 2019
Pench Right Canal[18] India Water 2019, 2022
Stockton Mine[19] New Zealand Mining 2022

References[edit]

  1. ^ Touze-Foltz, N. & Farcas, F. (2017). "Long-term performance and binder chemical structure evolution of elastomeric bituminous geomembranes". Geotextiles and Geomembranes. 45 (2): 121–130. doi:10.1016/j.geotexmem.2017.01.003. Retrieved November 1, 2023.
  2. ^ Scuero, Alberto; Vaschetti, Gabriella (2010). Geomembrane sealing systems for dams: ICOLD Bulletin 135 (Report). p. 23. doi:10.1007/s41062-017-0089-0.
  3. ^ Kendall, McIlwraith. Advanced Application of Bituminous Geomembrane (BGM) in Waste Capping: Australia. 12th International Conference on Geosynthetics. Rome, Italy: Taylor & Francis.
  4. ^ Boëda, E.; Connan, J.; Dessort, D. (March 1996). "Bitumen as a hafting material on Middle Palaeolithic artefacts". Nature. 380: 336–338. doi:10.1038/380336a0.
  5. ^ Giroud, J.P; Gourc, J.P. (2014). The first double geomembrane liner forty years later. 10th International Conference on Geosynthetics. Berlin, Germany: The International Geosynthetics Society.
  6. ^ Scuero, Alberto; Vaschetti, Gabriella (2010). Geomembrane sealing systems for dams: ICOLD Bulletin 135 (Report). p. 16. doi:10.1007/s41062-017-0089-0.
  7. ^ Giroud, J.P; Gourc, J.P. (2014). The first double geomembrane liner forty years later. 10th International Conference on Geosynthetics. Berlin, Germany: The International Geosynthetics Society.
  8. ^ Turley, M.; Gautier, J-L. (2004). Twenty five years experience using bituminous geomembranes as upstream waterproofing for structures (PDF). Canterbury, Kent: Proceedings of the British Dam Society.
  9. ^ Ossena, G.; Breul, B.; Herment, R. (1994). Bituminous Membrane Cap of a Radioactive Waste Landfill – Quality Program. Singapore: Proceedings of the International Geosynthetics Society ICG 5.
  10. ^ Turley, M.; Gautier, J-L. (2004). Twenty five years experience using bituminous geomembranes as upstream waterproofing for structures (PDF). Canterbury, Kent: Proceedings of the British Dam Society.
  11. ^ Breul, Bernard; Breul, Bertrand; Daly, Natalie (April 1, 2018). "Bituminous Geomembranes on a French Dam." Geosynthetics Magazine. [Online] Available: https://geosyntheticsmagazine.com/2018/04/01/bituminous-geomembranes-on-a-french-dam/
  12. ^ Coppinger, J.; Farrell, E. R.; Cherrill, H.; Stenson, G.; Breul, B.; Caquel, F.; Giroud, J. P. (2002). Use of bituminous geomembrane to reduce environmental impact of road in aquifer (PDF). Geosynthetics – 7th ICG. Nice, France: Swets & Zeitlinger, Lisse. pp. 921–926. ISBN 90-5809-523-1.
  13. ^ Cunning, John; Isidoro, Allison; Eldridge, Terry; Reinson, Jeff (2008). Dam Construction at Diavik using Bituminous Geomembrane Liners (PDF). Edmonton, Alberta, Canada: Proceedings of the GeoEdmonton 2008 Conference. pp. 933–939.
  14. ^ Bruel, B.; Huru, M.; Palolahti, A. (2009). Using a bituminous geomembrane liner at the Kittilä Gold Mine in northern Finland. Edinburgh, United Kingdom: Proceedings of the EuroGeo4 Conference.
  15. ^ Daly, Natalie; Escobar, Emilio; Breul, Bertrand (2020). Bituminous Geomembranes (BGM), 15 years of presence in Latin America for Hydraulic Applications (PDF). Rio De Janeiro, Brazil: Proceedings of the GeoAmericas 2020 Conference.
  16. ^ Daly, Natalie; Aguirre, Ted; Bruel, Bernard; Barfett, Ben (2018). Bituminous geomembranes (BGM) for heap leach pads and dumps for solid wastes in mine construction (PDF). Edmonton, Alberta, Canada: Proceedings of the GeoEdmonton 2018 Conference.
  17. ^ Havens, Emily. (July 10, 2019). "A Closer View: St. George Regional Airport's Massive Runway Reconstruction Is on Track." The Spectrum. [Online] Available: https://www.thespectrum.com/story/news/2019/07/10/closer-view-st-george-regional-airports-runway-project-track/1693296001/
  18. ^ Llinas, Pau; Breul, Bertrand (2023). Bituminous Geomembrane (BGM) in hot climates for hydraulic construction. 4th African Regional Conference on Geosynthetics (GeoAfrica 2023). Art. 02011. doi:10.1051/e3sconf/202336802011. Retrieved 2024-04-18.
  19. ^ "Greener Solution To Contain Coal Mining By-Product In New Zealand" (PDF). International Geosynthetics Society. August 24, 2023. Retrieved 2024-04-18.
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