Now showing items 1-20 of 22

    • Boundary effects in the desiccation of soil layers with controlled environmental conditions 

      Lakshmikantha, Ramasesha Mookanahallipatna; Prat Catalán, Pere; Ledesma Villalba, Alberto (2018-07)
      Article
      Open Access
      This article presents the results of an experimental research carried to investigate the mechanics of cracking of soil layers under drying conditions. The tests were conducted under controlled laboratory conditions and in ...
    • Cracking behaviour of silty clay soil under drying-wetting cycles 

      Cordero Arias, Josbel Andreina; Prat Catalán, Pere; Ledesma Villalba, Alberto; Cuadrado Cabello, Agustín (Librairie Ifsttar, 2015)
      Conference report
      Restricted access - publisher's policy
      This paper presents the results and analysis of cracking tests carried on samples of silty clay which were subjected to a drying-wetting-drying cycle to study the effect of cyclic change of moisture on the cracking behaviour. ...
    • Effects of compaction on desiccation cracking of clayey soils 

      Demagistri, Agustín; Ledesma Villalba, Alberto; Cordero Arias, Josbel Andreina; Moreno, Raúl; Prat Catalán, Pere; Jacinto, Abel Carlos (The Hong Kong University of Science and Technology (HKUST), 2018)
      Conference report
      Open Access
      Cracking in desiccating soils is an important topic in soil compacted works. This paper presents an experimental study on the effect of compaction on the cracking of a silty clay soil, which was subjected to drying conditions. ...
    • Evaluation of Safety Factors in Discontinuous Rock 

      Alonso Pérez de Agreda, Eduardo; Carol, Ignacio; Delahaye, Carlos Héctor; Gens Solé, Antonio; Prat Catalán, Pere (Elsevier, 1996)
      Article
      Restricted access - publisher's policy
      Safety factors for kinematically admissible failure mechanisms in jointed rock masses have been defined with linear and nonlinear failure criteria for rock discontinuities. Data required to compute these safety factors ...
    • Experimental analysis of 3D cracking in drying soils using ground-penetrating radar 

      Levatti, Hector Ulises; Prat Catalán, Pere; Ledesma Villalba, Alberto; Cuadrado Cabello, Agustín; Cordero Arias, Josbel Andreina (2017-03)
      Article
      Open Access
      This paper describes the capabilities of a novel technique to investigate crack formation and propagation in drying soils. The technique is a relatively simple, non-destructive indirect technique using a ground-penetrating-radar ...
    • Experimental analysis of desiccation cracks on a clayey silt from a large-scale test in natural conditions 

      Cordero Arias, Josbel Andreina; Prat Catalán, Pere; Ledesma Villalba, Alberto (2021-07)
      Article
      Restricted access - publisher's policy
      This paper presents an experimental investigation on the impact of environmental variables on soil cracking in natural conditions. The test was performed on a large soil specimen of initial size 3 × 3 × 0.5 m exposed to ...
    • Further developments in stress initialization in geomechanics via FEM and a two-step procedure involving Airy functions 

      Rafels Ybern, Carles; Jaqués Adell, Irene; Aliguer Piferrer, Ignasi; Carol, Ignacio; Prat Catalán, Pere; Lakshmikantha, Ramasesha Mookanahallipatna; Segura Segarra, José María (2017)
      Conference report
      Open Access
      The in-situ stress field in rock masses is a key aspect when a numerical analysis of a rock mass is carried out in any area of geo-engineering, such as civil, mining, or Oil & Gas. A method for the numerical generation of ...
    • Heat transport with advection in fractured rock 

      Pérez Carreras, Adrià; Carol, Ignacio; Prat Catalán, Pere (2019)
      Conference report
      Open Access
      In the transport of heat in porous media, diffusion generally dominates over advection due to slow fluid velocities imposed by low permeability. This is the reason why standard Galerkin formulation leading to extra ...
    • Heat transport with advection in fractured rock 

      Pérez Carreras, Adrià; Carol, Ignacio; Prat Catalán, Pere (CIMNE, 2019)
      Conference report
      Open Access
      In the transport of heat in porous media, diffusion generally dominates over advection due to slow fluid velocities imposed by low permeability. This is the reason why standard Galerkin formulation leading to extra ...
    • Influence of cracking in the desiccation process of clay soils 

      Levatti, Hector Ulises; Prat Catalán, Pere; Ledesma Villalba, Alberto (2009)
      Conference report
      Open Access
      It is well known that clayey soils undergoing desiccation tend to shrink and eventually crack. Analysis of the behaviour and influence of cracks in these types of soils is very important in several engineering fields such ...
    • Laboratory experiments in soil mechanics by means of digital twins and low-cost equipment 

      Ledesma Villalba, Alberto; Prat Catalán, Pere; Lloret Morancho, Antonio; Chacón Flores, Rolando Antonio; Sondon Sansó, Mercedes (International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), 2020)
      Conference report
      Restricted access - publisher's policy
      The Soil Mechanics Laboratory has been traditionally an important issue in most courses on Soil Mechanics and Geotechnical Engineering. Nowadays, the available technology allows to build low cost systems that brings the ...
    • Large test to study the role of soil-air interaction in soil cracking 

      Cordero Arias, Josbel Andreina; Prat Catalán, Pere; Ledesma Villalba, Alberto; Cuadrado Cabello, Agustín (The Hong Kong University of Science and Technology (HKUST), 2018)
      Conference report
      Open Access
      Soil surfaces in contact with the atmosphere are interfaces where different processes play an important role in triggering the formation of cracks due to desiccation. Empirical evidence shows that variables such as solar ...
    • Methods for FEM stress initialization based on stress functions, and application to a reservoir cross-section 

      Aliguer Piferrer, Ignasi; Rafels Ybern, Carles; Jaqués Adell, Irene; Carol, Ignacio; Prat Catalán, Pere; Lakashmikhanta, Ramasesha; Segura Segarra, José María (OnePetro, 2013)
      Conference report
      Restricted access - publisher's policy
      An accurate description of the in-situ stress field in a rock mass is crucial in different areas of geo-engineering such as: underground excavations, hydrocarbon extraction, CO2 storage, hydraulic fracture etc. In this ...
    • Numerical analysis of desiccation, shrinkage and cracking in low plasticity clayey soils 

      Levatti, Hector Ulises; Prat Catalán, Pere; Ledesma Villalba, Alberto (CIMNE, 2017)
      Conference report
      Open Access
      This paper presents a numerical study of the desiccation processes of low-plasticity clayey soils that usually result in shrinkage and often in cracking. For the theoretical development of the numerical model, concepts of ...
    • Numerical analysis of desiccation, shrinkage and cracking in low plasticity clayey soils 

      Levatti, Hector Ulises; Prat Catalán, Pere; Ledesma Villalba, Alberto (2017)
      Conference lecture
      Open Access
      This paper presents a numerical study of the desiccation processes of low-plasticity clayey soils that usually result in shrinkage and often in cracking. For the theoretical development of the numerical model, concepts of ...
    • Numerical and experimental study of initiation and propagation of desiccation cracks in clayey soils 

      Levatti, Hector Ulises; Prat Catalán, Pere; Ledesma Villalba, Alberto (Elsevier, 2019-01)
      Article
      Open Access
      This paper presents the fundamentals and the mathematical formulation to study desiccation cracking in soils based on Unsaturated Soil Mechanics as well as a numerical analysis of a previous desiccation test program. The ...
    • Numerical investigation into the failure of a micropile retaining wall 

      Prat Catalán, Pere (2017-01)
      Article
      Open Access
      The paper presents a numerical investigation on the failure of a micropile wall that collapsed while excavating the adjacent ground. The main objectives are: to estimate the strength parameters of the ground; to perform a ...
    • Numerical stress initialization in geomechanics via the FEM and a two-step procedure 

      Aliguer Piferrer, Ignasi; Carol, Ignacio; Prat Catalán, Pere; Rafels Ybern, Carles; Lakashmikhanta, Ramasesha; Segura Serra, Josep Maria (CIMNE, 2015)
      Conference lecture
      Open Access
      The knowledge of the in-situ stress field in rock masses is crucial in different areas of geo-engineering, such as mining or civil underground excavations, hydrocarbon extraction, CO2 storage, hydraulic fracture operations, ...
    • Patterns of cracking in soils due to drying and wetting cycles 

      Ledesma Villalba, Alberto; Cordero Arias, Josbel Andreina; Cuadrado Cabello, Agustín; Prat Catalán, Pere (CRC Press, 2014)
      Conference report
      Restricted access - publisher's policy
      There is a well reported evidence of cracking in clayey or silty soils when drying. Shrinkage in the soil mass and also boundary conditions generate a nonhomogeneous stress state locally producing tensile stresses and ...
    • Soil surface boundary condition in desiccating soils 

      Cuadrado Cabello, Agustín; Encalada López, David Alejandro; Ledesma Villalba, Alberto; Prat Catalán, Pere (The Icelandic Geotechnical Society (IGS), 2019)
      Conference report
      Restricted access - publisher's policy
      Soils undergoing desiccation exhibit shrinkage and eventually cracking. That may become an environmental problem in practical applications. From a Geotechnical perspective, it is possible to solve the corresponding ...