1. Changes of permeability of nonwoven geotextiles due to clogging and cyclic water flow in laboratory conditionsAnna Miszkowska, Stanislav Lenart, Eugeniusz Koda, 2017, izvirni znanstveni članek Povzetek: The use of geotextile filters has been a common application in geo-environmental and geotechnical engineering for decades. The purpose of the present paper is to assess the influence of artificial physical clogging and cyclic water flow on the water permeability characteristics of nonwoven geotextiles used commonly in filter and drainage systems. Despite many studies examining the behavior of soil-geosynthetics, the mechanism of physical clogging is not fully understood yet and remains incompletely defined. Artificial clogging and cyclic water flow tests have been conducted according to a procedure created by the authors. Three nonwoven geotextiles and silty sand were employed in the test series. Hydraulic properties of the tested geosynthetics were determined according to the ISO standard. Filter design criteria are also discussed. The paper also presents the changes of water permeability characteristics due to clogging and cyclic water flow. The results show significant decrease of water permeability coefficients of the tested nonwoven geotextiles after artificial clogging and under cyclic water flow. Furthermore, the clogging mechanism was observed and confirmed by three-dimensional computed tomography.
Ključne besede: nonwoven geotextile, clogging, cyclic flow, permeability, soil
Objavljeno v DiRROS: 14.08.2024; Ogledov: 40; Prenosov: 55
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2. Atmosphere - vegetation - soil interactions in a climate change context; impact of changing conditions on engineered transport infrastructure slopes in EuropeAnh Minh Tang, P. N. Hughes, T. A. Dijkstra, Amin Askarinejad, Mihael Brenčič, Yu Jun Cui, J. J. Diez, T. Firgi, Beata Gajewska, F. Gentile, G. Grossi, C. Jommi, F. Kehagia, E. Koda, H. W. ter Maat, Stanislav Lenart, S. Lourenco, M. Oliveira, P. Osinski, Sarah Springman, Ross Stirling, D. G. Toll, Ursula J. Van Beek, 2018, izvirni znanstveni članek Povzetek: In assessing the impact of climate change on infrastructure, it is essential to consider the interactions between the atmosphere, vegetation and the near-surface soil. This paper presents an overview of these processes, focusing on recent advances from the literature and those made by members of COST Action TU1202 - Impacts of climate change on engineered slopes for infrastructure. Climate- and vegetation-driven processes (suction generation, erosion, desiccation cracking, freeze-thaw effects) are expected to change in incidence and severity, which will affect the stability of new and existing infrastructure slopes. This paper identifies the climate- and vegetation-driven processes that are of greatest concern, the suite of known unknowns that require further research, and lists key aspect that should be considered for the design of engineered transport infrastructure slopes in the context of climate change.
Objavljeno v DiRROS: 12.12.2023; Ogledov: 301; Prenosov: 175
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