While roots have been generally proved to be beneficial to soil mechanical behaviour, different and counterposed results have been found when investigating their effects on soil hydraulic response. Roots affect the hydro-mechanical and chemical properties of soils at different scales. In this regard, the paper focuses on studying the macroscopic hydraulic properties of root-permeated and compacted soils considering microstructural features coming from mercury intrusion porosimetry and X-ray micro-tomography. The results are interpreted bearing in mind the influence of the different soil hydraulic states on roots structure and physiology. The analysis of the results shows that roots growing in a compacted soil at low stresses are opening fissures while decreasing micropore volume inside aggregates due to chemical effects. This response has important effects on the hydraulic behaviour of the soil.
", "keywords": ["0106 biological sciences", "[SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics", "550", "0211 other engineering and technologies", "Soil hydraulic", "02 engineering and technology", "01 natural sciences", "[SDV.BV.BOT] Life Sciences [q-bio]/Vegetal Biology/Botanics", "[SDV.BID.SPT] Life Sciences [q-bio]/Biodiversity/Systematics", " Phylogenetics and taxonomy", "[SDV.EE.ECO] Life Sciences [q-bio]/Ecology", " environment/Ecosystems", "GE1-350", "Soil compaction", "\u00c0rees tem\u00e0tiques de la UPC::Enginyeria civil::Geot\u00e8cnia::Mec\u00e0nica de s\u00f2ls", "621", "Phylogenetics and taxonomy", "[SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics", "Roots", "6. Clean water", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "Environmental sciences", "S\u00f2ls -- Compactaci\u00f3", "[SDV.EE.ECO]Life Sciences [q-bio]/Ecology", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "environment/Ecosystems", ":Enginyeria civil::Geot\u00e8cnia::Mec\u00e0nica de s\u00f2ls [\u00c0rees tem\u00e0tiques de la UPC]", "Macroscopic hydraulic properties"]}, "links": [{"href": "https://www.e3s-conferences.org/10.1051/e3sconf/20199212014/pdf"}, {"href": "https://doi.org/10.1051/e3sconf/20199212014"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/E3S%20Web%20of%20Conferences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1051/e3sconf/20199212014", "name": "item", "description": "10.1051/e3sconf/20199212014", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1051/e3sconf/20199212014"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-01T00:00:00Z"}}, {"id": "10.20933/100001123", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-25T16:23:41Z", "type": "Report", "created": "2019-05-27", "title": "Finite element modelling of the uplift behaviour of screw piles in sand", "description": "This contribution describes a preliminary parametric analysis of the factors affecting the pull-out resistance of screw-piles in undrained conditions. The numerical simulations rely on the Particle Finite Element method, a method known for its capabilities to tackle large deformations and rapid changing boundaries at large strains. A total stress analysis-assuming a quasi-incompressible elastic model along with a Tresca plastic model-is used to simulate the clayey soil behavior. Contact constraints are imposed to the solution with a penalty approach. As a first step, a two-dimensional geometry is used and the pile resistance to pullout and penetration is assessed.", "keywords": ["Renewable energy", "UPLIFT", "Soil mechanics", "\u00c0rees tem\u00e0tiques de la UPC::Enginyeria civil::Geot\u00e8cnia::Mec\u00e0nica de s\u00f2ls", "Screw piles", "0211 other engineering and technologies", "finite element analysis", "02 engineering and technology", "01 natural sciences", "Mec\u00e0nica dels s\u00f2ls", "Sand", "0103 physical sciences", "centrifuge modeling", ":Enginyeria civil::Geot\u00e8cnia::Mec\u00e0nica de s\u00f2ls [\u00c0rees tem\u00e0tiques de la UPC]"]}, "links": [{"href": "https://doi.org/10.20933/100001123"}, {"rel": "self", "type": "application/geo+json", "title": "10.20933/100001123", "name": "item", "description": "10.20933/100001123", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.20933/100001123"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-05-27T00:00:00Z"}}, {"id": "10.3390/w10060688", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-25T16:25:27Z", "type": "Journal Article", "created": "2018-05-28", "title": "Monitoring of a Full-Scale Embankment Experiment Regarding Soil\u2013Vegetation\u2013Atmosphere Interactions", "description": "Slope mass-wasting like shallow slides are mostly triggered by climate effects, such as rainfall, and soil\uffe2\uff80\uff93vegetation\uffe2\uff80\uff93atmosphere (SVA) interactions play a key role. SVA interactions are studied by a full-scale embankment with different orientations (North and South) and vegetation covers (bare and vegetated) in the framework of the prediction of climate change effects on slope stability in the Pyrenees. A clayey sand from the Llobregat river delta was used for the construction of the embankment and laboratory tests showed the importance of suction on the strength and hydraulic conductivity. Sixty sensors, which are mostly installed at the upper soil layer of the embankment, registered 122 variables at four vertical profiles and the meteorological station with a 5 min scan rate. Regarding temperature, daily temperature fluctuation at the shallow soil layer disappeared at a depth of about 0.5 m. There was great influence of orientation with much higher values at the South-facing slope (up to 55 \uffc2\uffb0C at \uffe2\uff88\uff921 cm depth) due to solar radiation. Regarding rainfall infiltration, only long duration rainfalls produced an important increase of soil moisture and pore water pressure, while short duration rainfalls did not trigger significant variations. However, these changes mostly affected the surface soil layer and decreased with depth.
", "keywords": ["rainfall infiltration", "\u00c0rees tem\u00e0tiques de la UPC::Enginyeria civil::Geot\u00e8cnia::Mec\u00e0nica de s\u00f2ls", "Terraplens", "0211 other engineering and technologies", "heat flux", "02 engineering and technology", "15. Life on land", "01 natural sciences", "6. Clean water", "monitoring", "13. Climate action", ":Enginyeria civil::Geot\u00e8cnia::Mec\u00e0nica de s\u00f2ls [\u00c0rees tem\u00e0tiques de la UPC]", "monitoring; embankment; rainfall infiltration; heat flux", "Embankments", "embankment", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://www.mdpi.com/2073-4441/10/6/688/pdf"}, {"href": "https://doi.org/10.3390/w10060688"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/w10060688", "name": "item", "description": "10.3390/w10060688", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/w10060688"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-05-25T00:00:00Z"}}, {"id": "1959.13/1410688", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-25T16:32:09Z", "type": "Journal Article", "created": "2017-08-05", "title": "From saturated to unsaturated conditions and vice versa", "description": "Representing transitions between saturated and unsaturated conditions, during drying, wetting and loading paths, is a necessary step for a consistent unification between saturated and unsaturated soil mechanics. Transitions from saturated to unsaturated conditions during drying will occur at a nonzero air-entry value of suction, whereas transitions from unsaturated to saturated conditions during wetting or loading will occur at a lower nonzero air-exclusion value of suction. Air-entry and air-exclusion values of suction for a given soil will differ (representing hysteresis in the retention behaviour) and both are affected by changes in the dry density of the soil or by the occurrence of plastic volumetric strains. The paper demonstrates, through model simulations and comparison with experimental data from the literature (covering drying, wetting and loading tests), that the Glasgow Coupled Model (GCM), a coupled elasto-plastic constitutive model covering both mechanical and retention behaviour, represents transitions between unsaturated and saturated behaviour in a consistent fashion. Key aspects of the GCM are the use of Bishop\u2019s stress tensor for mechanical behaviour, the additional influence of degree of saturation on mechanical yielding, inclusion of hysteresis in the retention behaviour, and the role of plastic volumetric strains (and not total volumetric strains) in the description of the water retention response. The success of the GCM in representing consistently transitions between saturated and unsaturated conditions, together with subsequent mechanical and retention responses, demonstrates the potential of this coupled constitutive model for numerical modelling of boundary value problems involving saturated and unsaturated conditions. Peer Reviewed", "keywords": ["dry density", "\u00c0rees tem\u00e0tiques de la UPC::Inform\u00e0tica::Aplicacions de la inform\u00e0tica", "670", "0211 other engineering and technologies", "mechanical yielding", "Water retention", "02 engineering and technology", "retention hysteresis", "De-saturation line", "de-saturation", "De-saturation", "Saturation line", "01 natural sciences", "mechanical behaviour", "Coupling", ":Inform\u00e0tica::Aplicacions de la inform\u00e0tica [\u00c0rees tem\u00e0tiques de la UPC]", "degree of saturation", "coupling", "Mec\u00e0nica dels s\u00f2ls -- Models matem\u00e0tics", "Dry density", "water retention", "0105 earth and related environmental sciences", "Degree of saturation", "\u00c0rees tem\u00e0tiques de la UPC::Enginyeria civil::Geot\u00e8cnia::Mec\u00e0nica de s\u00f2ls", "saturation", "Mechanical behaviour", "Saturation", "Soil mechanics -- Mathematical models", "Retention hysteresis", "6. Clean water", "de-saturation line", "plastic volumetric strains", "Mechanical yielding", "saturation line", "Plastic volumetric strains", ":Enginyeria civil::Geot\u00e8cnia::Mec\u00e0nica de s\u00f2ls [\u00c0rees tem\u00e0tiques de la UPC]"]}, "links": [{"href": "https://eprints.gla.ac.uk/144466/1/144466.pdf"}, {"href": "http://dro.dur.ac.uk/26399/1/26399.pdf"}, {"href": "http://link.springer.com/content/pdf/10.1007/s11440-017-0577-6.pdf"}, {"href": "https://doi.org/1959.13/1410688"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Acta%20Geotechnica", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "1959.13/1410688", "name": "item", "description": "1959.13/1410688", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/1959.13/1410688"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-08-05T00:00:00Z"}}, {"id": "2117/356038", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-25T16:32:41Z", "type": "Journal Article", "created": "2021-06-23", "title": "Numerical integration of an elasto-plastic critical state model for soils under unsaturated conditions", "description": "Open AccessThis paper presents the complete set of incremental equations for the numerical integration of the Glasgow Coupled Model (GCM) and a comprehensive algorithm for its numerical integration. The incremental formulation proposed is expressed in terms of strain and suction increments (i.e. strain-driven) and defines an initial value problem (IVP) that can be solved once the initial state and the pair of increments of the driven variables are known. The numerical integration of this IVP is carried out by extending to unsaturated condition, the well-known explicit substepping formulation with automatic error control widely used for saturated soils. A notable feature of the substepping integration scheme presented is that it integrates simultaneously the model equations for both mechanical and water retention responses. Hence, the estimate of the local truncation error to automatically adjust the size of the integration step is not only affected by the local error in stresses and mechanical hardening parameter (as in a saturated soil model) but, additionally, by the local error incurred in the integration of the water retention relations (i.e. degree of saturation and water retention hardening parameter). The correctness of the integration scheme is then verified by comparison of computational outcomes against analytical/reference solutions.", "keywords": ["Soil mechanics", "\u00c0rees tem\u00e0tiques de la UPC::Enginyeria civil::Geot\u00e8cnia::Mec\u00e0nica de s\u00f2ls", "Unsaturated soils", "0211 other engineering and technologies", "02 engineering and technology", "01 natural sciences", "6. Clean water", "510", "Mec\u00e0nica dels s\u00f2ls", "518", "Substepping integration schemes", "Automatic error control", "0101 mathematics", ":Enginyeria civil::Geot\u00e8cnia::Mec\u00e0nica de s\u00f2ls [\u00c0rees tem\u00e0tiques de la UPC]", "Strain-driver"], "contacts": [{"organization": "Lloret Cabot, Marti, Wheeler, Simon J., Gens Sol\u00e9, Antonio, Sloan, Scott,", "roles": ["creator"]}]}, "links": [{"href": "http://dro.dur.ac.uk/33416/1/33416.pdf"}, {"href": "https://doi.org/2117/356038"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Computers%20and%20Geotechnics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2117/356038", "name": "item", "description": "2117/356038", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2117/356038"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-09-01T00:00:00Z"}}, {"id": "3177373861", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-25T16:33:48Z", "type": "Journal Article", "created": "2021-06-23", "title": "Numerical integration of an elasto-plastic critical state model for soils under unsaturated conditions", "description": "Open AccessThis paper presents the complete set of incremental equations for the numerical integration of the Glasgow Coupled Model (GCM) and a comprehensive algorithm for its numerical integration. The incremental formulation proposed is expressed in terms of strain and suction increments (i.e. strain-driven) and defines an initial value problem (IVP) that can be solved once the initial state and the pair of increments of the driven variables are known. The numerical integration of this IVP is carried out by extending to unsaturated condition, the well-known explicit substepping formulation with automatic error control widely used for saturated soils. A notable feature of the substepping integration scheme presented is that it integrates simultaneously the model equations for both mechanical and water retention responses. Hence, the estimate of the local truncation error to automatically adjust the size of the integration step is not only affected by the local error in stresses and mechanical hardening parameter (as in a saturated soil model) but, additionally, by the local error incurred in the integration of the water retention relations (i.e. degree of saturation and water retention hardening parameter). The correctness of the integration scheme is then verified by comparison of computational outcomes against analytical/reference solutions.", "keywords": ["Soil mechanics", "\u00c0rees tem\u00e0tiques de la UPC::Enginyeria civil::Geot\u00e8cnia::Mec\u00e0nica de s\u00f2ls", "Unsaturated soils", "0211 other engineering and technologies", "02 engineering and technology", "01 natural sciences", "6. Clean water", "510", "Mec\u00e0nica dels s\u00f2ls", "518", "Substepping integration schemes", "Automatic error control", "0101 mathematics", ":Enginyeria civil::Geot\u00e8cnia::Mec\u00e0nica de s\u00f2ls [\u00c0rees tem\u00e0tiques de la UPC]", "Strain-driver"], "contacts": [{"organization": "Lloret Cabot, Marti, Wheeler, Simon J., Gens Sol\u00e9, Antonio, Sloan, Scott,", "roles": ["creator"]}]}, "links": [{"href": "http://dro.dur.ac.uk/33416/1/33416.pdf"}, {"href": "https://doi.org/3177373861"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Computers%20and%20Geotechnics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "3177373861", "name": "item", "description": "3177373861", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/3177373861"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-09-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=%3AEnginyeria+civil%3A%3AGeot%C3%A8cnia%3A%3AMec%C3%A0nica+de+s%C3%B2ls+%5B%C3%80rees+tem%C3%A0tiques+de+la+UPC%5D&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=%3AEnginyeria+civil%3A%3AGeot%C3%A8cnia%3A%3AMec%C3%A0nica+de+s%C3%B2ls+%5B%C3%80rees+tem%C3%A0tiques+de+la+UPC%5D&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=%3AEnginyeria+civil%3A%3AGeot%C3%A8cnia%3A%3AMec%C3%A0nica+de+s%C3%B2ls+%5B%C3%80rees+tem%C3%A0tiques+de+la+UPC%5D&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=%3AEnginyeria+civil%3A%3AGeot%C3%A8cnia%3A%3AMec%C3%A0nica+de+s%C3%B2ls+%5B%C3%80rees+tem%C3%A0tiques+de+la+UPC%5D&offset=9", "hreflang": "en-US"}], "numberMatched": 9, "numberReturned": 9, "distributedFeatures": [], "timeStamp": "2026-06-25T21:30:22.901033Z"}