Water retention and transfer properties of a Green roof volcanic substrate
Конференцијски прилог (Објављена верзија)
Метаподаци
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The water retention curve and the hydraulic conductivity function of a volcanic coarse granular material used as a substrate in an urban green roof in the Paris area was carried out on a newly developed device, in which low suctions were controlled. In the same cell, a hanging column system was used for controlling smaller suctions (up to 32 kPa ) and the axis translation technique for larger suctions (up to 50 kPa ). Water exchanges were monitored in connected tubes by using a high accuracy differential pressure transducer. The step changes in suction were also used to determine the hydraulic conductivity function by means of Gardner’s method, accounting for the impedance effects due to the high air entry value ceramic porous disk with Kunze and Kirkham’s method. van Genuchten and Brooks and Corey models were used for the water retention curve, but the hydraulic conductivity functions derived from these expressions appeared to lead to a significant under-estimation, confirming the nee...d of operational and simple device for the experimental determination of the hydraulic conductivity function.
Извор:
2020, 195Издавач:
- E3S Web of Conferences
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Институција/група
GraFarTY - CONF AU - Stanić, Filip AU - Delage, Pierre AU - Cui, Yu-Jun AU - De Laure, Emmanuel PY - 2020 UR - https://grafar.grf.bg.ac.rs/handle/123456789/3363 AB - The water retention curve and the hydraulic conductivity function of a volcanic coarse granular material used as a substrate in an urban green roof in the Paris area was carried out on a newly developed device, in which low suctions were controlled. In the same cell, a hanging column system was used for controlling smaller suctions (up to 32 kPa ) and the axis translation technique for larger suctions (up to 50 kPa ). Water exchanges were monitored in connected tubes by using a high accuracy differential pressure transducer. The step changes in suction were also used to determine the hydraulic conductivity function by means of Gardner’s method, accounting for the impedance effects due to the high air entry value ceramic porous disk with Kunze and Kirkham’s method. van Genuchten and Brooks and Corey models were used for the water retention curve, but the hydraulic conductivity functions derived from these expressions appeared to lead to a significant under-estimation, confirming the need of operational and simple device for the experimental determination of the hydraulic conductivity function. PB - E3S Web of Conferences T1 - Water retention and transfer properties of a Green roof volcanic substrate VL - 195 DO - 10.1051/e3sconf/202019503011 ER -
@conference{ author = "Stanić, Filip and Delage, Pierre and Cui, Yu-Jun and De Laure, Emmanuel", year = "2020", abstract = "The water retention curve and the hydraulic conductivity function of a volcanic coarse granular material used as a substrate in an urban green roof in the Paris area was carried out on a newly developed device, in which low suctions were controlled. In the same cell, a hanging column system was used for controlling smaller suctions (up to 32 kPa ) and the axis translation technique for larger suctions (up to 50 kPa ). Water exchanges were monitored in connected tubes by using a high accuracy differential pressure transducer. The step changes in suction were also used to determine the hydraulic conductivity function by means of Gardner’s method, accounting for the impedance effects due to the high air entry value ceramic porous disk with Kunze and Kirkham’s method. van Genuchten and Brooks and Corey models were used for the water retention curve, but the hydraulic conductivity functions derived from these expressions appeared to lead to a significant under-estimation, confirming the need of operational and simple device for the experimental determination of the hydraulic conductivity function.", publisher = "E3S Web of Conferences", title = "Water retention and transfer properties of a Green roof volcanic substrate", volume = "195", doi = "10.1051/e3sconf/202019503011" }
Stanić, F., Delage, P., Cui, Y.,& De Laure, E.. (2020). Water retention and transfer properties of a Green roof volcanic substrate. E3S Web of Conferences., 195. https://doi.org/10.1051/e3sconf/202019503011
Stanić F, Delage P, Cui Y, De Laure E. Water retention and transfer properties of a Green roof volcanic substrate. 2020;195. doi:10.1051/e3sconf/202019503011 .
Stanić, Filip, Delage, Pierre, Cui, Yu-Jun, De Laure, Emmanuel, "Water retention and transfer properties of a Green roof volcanic substrate", 195 (2020), https://doi.org/10.1051/e3sconf/202019503011 . .