International Journal of Geomechanics: Recent submissions

Now showing items 3801-3820 of 4049

    • Undrained Shear Strength of K0 Consolidated Soft Soils 

      Li-Zhong Wang; Kai-lun Shen; Sheng-Hua Ye (American Society of Civil Engineers, 2008)
      On the basis of critical state soil mechanics, this study derives theoretical formulas for predicting the undrained shear strength of

    • Dynamic Fracture and Strain Rate Behavior of Aggregates Used in Transportation 

      Ghatu Subhash; Stanley J. Vitton; Huang Chengyi (American Society of Civil Engineers, 2008)
      The static and dynamic uniaxial compressive strengths of coarse aggregate materials used in portland cement concrete (PCC) were determined under dry and saturated conditions for three blast furnace slags, three limestones, ...

    • Thermal Conductivity Evolution of Saturated Clay under Consolidation Process 

      H. M. Abuel-Naga; D. T. Bergado; A. Bouazza (American Society of Civil Engineers, 2008)
      This paper presents the results of a study on the thermal conductivity of a soft saturated clay (Bangkok clay) carried out in relation to an investigation into thermal ground improvement using prefabricated vertical drains. ...

    • Seismic Rotational Displacement of Gravity Walls by Pseudodynamic Method 

      Deepankar Choudhury; Sanjay S. Nimbalkar (American Society of Civil Engineers, 2008)
      Prediction of the rotational displacements, induced by earthquake is a key aspect of the seismic design of retaining walls. In this paper, the pseudodynamic method is used to compute rotational displacements of the retaining ...

    • Damage Evaluation with P-Wave Velocity Measurements during Uniaxial Compression Tests on Argillaceous Rocks 

      Frederic L. Pellet; Geraldine Fabre (American Society of Civil Engineers, 2007)
      In the study of time dependent behavior of rock, the main difficulty is to predict delayed failure, which is of the utmost importance in assessing the safety of underground structures, such as deep underground facilities ...

    • Is P-Wave Velocity an Indicator of Saturation in Sand with Viscous Pore Fluid? 

      Ernest Naesgaard; Peter M. Byrne; Dharma Wijewickreme (American Society of Civil Engineers, 2007)
      It is commonly assumed that within inundated sand the Skempton

    • Dynamic Modeling of Hydraulic Shovel Excavators for Geomaterials 

      Samuel Frimpong; Yafei Hu; Hilary Inyang (American Society of Civil Engineers, 2008)
      The hydraulic shovel excavator has found significant applications in surface mining, construction, and geotechnical operations due to its flexibility and mobility. The key to high availability and utilization of this shovel ...

    • Torsional Piles in Two-Layered Nonhomogeneous Soil 

      Wei Dong Guo; Y. K. Chow; Mark F. Randolph (American Society of Civil Engineers, 2007)
      Response of a pile subjected to torsional loading is significantly affected by soil profile. To investigate this characteristic, pile-soil interaction may be modeled by a series of independent springs distributed along the ...

    • Saturation and Preloading Effects on the Cyclic Behavior of Sand 

      R. Bouferra; N. Benseddiq; I. Shahrour (American Society of Civil Engineers, 2007)
      In order to study pore water pressure response and liquefaction characteristics of sand, which has previously experienced liquefaction, two series of cyclic triaxial tests were run on medium dense sand specimens. In the ...

    • Possible Stress Path of HCA for Cyclic Principal Stress Rotation under Constant Confining Pressures 

      Yang Shen; Jian Zhou; Xiao Nan Gong (American Society of Civil Engineers, 2007)
      Nowadays most hollow cylinder apparatus (HCA) in the world can only apply two dynamic loads, namely the axial load

    • Numerical Studies on Bit-Rock Fragmentation Mechanisms 

      H. Y. Liu; S. Q. Kou; P. A. Lindqvist (American Society of Civil Engineers, 2008)
      The rock fragmentation process induced by a single button-bit, two neighboring button-bits, and multiple button-bits are numerically studied using the rock and tool interaction code

    • Casing Influence in Reservoir Compaction Measurement by Radioactive Markers in the Northern Adriatic, Italy 

      Massimiliano Ferronato; Giuseppe Gambolati; Pietro Teatini; Carlo Janna (American Society of Civil Engineers, 2007)
      The reliability of in situ compaction measurements made in producing gas/oil reservoirs with the aid of the radioactive marker technique (RMT) is a very important issue as an essential parameter controlling the geomechanical ...

    • 3D Modeling of Ripping Process 

      Hakan Basarir; Celal Karpuz; Levent Tutluoğlu (American Society of Civil Engineers, 2008)
      Due to environmental constraints and limitations on blasting, ripping as a ground loosening and breaking method has become more popular than drilling and blasting method in both mining and civil engineering applications. ...

    • Disturbed Rock Zone Geomechanics at the Waste Isolation Pilot Plant 

      Frank D. Hansen (American Society of Civil Engineers, 2008)
      The disturbed rock zone constitutes an important geomechanical element of the Waste Isolation Pilot Plant. The science and engineering underpinning the disturbed rock zone provide the basis for evaluating ongoing operational ...

    • Intrinsic Length Scales in Tool-Rock Interaction1 

      Haiying Huang; Emmanuel Detournay (American Society of Civil Engineers, 2008)
      Indentation and cutting experiments in rocks reveal that the action of a tool can induce either ductile and/or brittle failure, with the ductile mode associated with damage of the rock and/or plastic flow, and the brittle ...

    • Stress-Deformation Behavior of Chalk 

      M. U. Holloway-Strong; S. J. Hughes; E. E. Hellawell (American Society of Civil Engineers, 2007)
      When strong rock masses, with discontinuity patterns parallel and perpendicular to the ground surface, are subjected to normal loads, linear or concave stress-deformation curves are produced. In contrast, chalk rock masses ...

    • Intelligent Cable Shovel Excavation Modeling and Simulation 

      Samuel Frimpong; Yafei Hu (American Society of Civil Engineers, 2008)
      Cable shovel excavators are used for primary production of geomaterials in many surface mining operations. A major problem in excavation is the variability of material diggability, resulting in varying mechanical energy ...

    • Scattering of Harmonic Waves by a Circular Cavity in a Porous Medium: Complex Functions Theory Approach 

      Behrooz Gatmiri; Hashem Eslami (American Society of Civil Engineers, 2007)
      An analytical solution for the evaluation of scattering of waves by a circular cavity in infinite isotropic elastic porous media is presented. Two groups of complex functions for solid skeleton and pore fluid in a ...

    • Evaluating the Constrained Modulus and Collapsibility of Loess from Standard Penetration Test 

      Franco M. Francisca (American Society of Civil Engineers, 2007)
      Argentinean loess has mechanical properties highly dependent on moisture content. Sand and silt particles jointed by clay bridges and precipitated salts form macropores which undergo high volume decrease when loaded or ...

    • Effect of Recent Load History on Laterally Loaded Piles in Normally Consolidated Clay 

      Nina H. Levy; Itai Einav; Mark F. Randolph (American Society of Civil Engineers, 2007)
      The response of piles subjected to lateral loading (along a single line of action) has been substantially investigated in the past. However, little attention has been devoted to studying how a change in the lateral load ...