Now showing items 1-6 of 6

    • A new modelling approach for unsaturated soils using independent stress variables 

      Sheng, Daichao; Fredlund, Delwyn G.; Gens Solé, Antonio (2008-04)
      Article
      Restricted access - publisher's policy
      Although a number of constitutive models for unsaturated soils exist in the literature, some fundamental questions have not been fully answered. There are questions related to (i) the change of the yield stress with soil ...
    • Air permeability measurements in low porosity clayey rocks 

      Pineda Jiménez, Jubert Andrés; Viet, Hoang Nguyen; Romero Morales, Enrique Edgar; Sheng, Daichao; Gens Solé, Antonio (2023)
      Conference report
      Restricted access - publisher's policy
      The paper describes the development of a high-pressure isotropic cell for studying the environmental degradation of low porosity clayey rocks. Air permeability measurements are used in this device as a tool to evaluate ...
    • From saturated to unsaturated conditions and vice versa 

      Lloret Cabot, Marti; Wheeler, Simon J.; Pineda Jiménez, Jubert Andrés; Romero Morales, Enrique Edgar; Sheng, Daichao (2018-02)
      Article
      Open Access
      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 ...
    • Influence of soil microstructure on air permeability in compacted clay 

      Viet, Hoang Nguyen; Pineda Jiménez, Jubert Andrés; Romero Morales, Enrique Edgar; Sheng, Daichao (Thomas Telford, 2021-05)
      Article
      Open Access
      This paper describes an experimental study aimed at evaluating the influence of soil microstructure on air permeability in compacted clay. Air permeability measurements, estimated using the gas pressure decay method, were ...
    • Shear strength degradation in claystones due to environmental effects 

      Pineda Jiménez, Jubert Andrés; Romero Morales, Enrique Edgar; De Gracia, Manuel; Sheng, Daichao (Thomas Telford, 2014-05)
      Article
      Restricted access - publisher's policy
      This note explores the influence of environmental effects, as those induced by cyclic changes in relative humidity, on the degradation of the shear strength parameters in Lilla claystone, a low-porosity clayey rock from ...
    • Volumetric behavior of unsaturated-reconstituted soils 

      Burton, G. J.; Sheng, Daichao; Romero Morales, Enrique Edgar (CRC Press, 2013)
      Conference report
      Restricted access - publisher's policy
      The vast majority of unsaturated soil research is completed on compacted soils. Due to ease of laboratory testing, specimens are typically prepared dry of optimum and often with high void ratios (low dry density) to capture ...