Search Results 1-20 of 397

  • Morphological transitions for pore water and pore air during drying and wetting processes in partially saturated sand

    Kido Ryunosuke , Higo Yosuke , Takamura Fukushi , Morishita Ryoichi , Khaddour Ghonwa , Salager Simon

    Water retention characteristics are important for modeling the mechanical and hydraulic behavior of partially saturated sand. … It is well known that the soil water characteristic curve shows hysteresis during drying and wetting processes. …

    Acta Geotechnica (15), 1745-1761, 2020-07

    IR 

  • A theory of loosening earth pressure above a shallow tunnel in unsaturated ground

    Fang Xu , Kikumoto Mamoru , Cui Ying

    … The theory is developed based on the limit equilibrium theory, combining soil–water characteristic curves, Mohr–Coulomb failure criteria, and effective stress for unsaturated soils. … Based on the soil–water characteristic curve, the degree of saturation decreases, which causes wet density to decrease and the total and effective loosening earth pressures to have contrary tendencies. …

    International journal for numerical and analytical methods in geomechanics 44(10), 1495-1508, 2020-03-26

    IR 

  • STUDY ON AN APPROPRIATE FINE SOIL(SAND) FOR MAXIMIZING DIVERSION LENGTH FOR CAPILLARY BARRIER OF A TOP COVER  [in Japanese]

    KOBAYASHI Kaoru , MATSUMOTO Kazunobu , SUZUKI Asuka , MORII Toshihiro

    … A horizontal distance from the beginning of water flow to this point of percolation is called a diversion length of the CB, and is one of important parameters in designing structural dimensions and configuration of the CB system. … In this paper, the theoretical equation proposed by Ross-Steenhuis, fine soil permeability, water retention, are used to clarify an appropriate a fine soil for maximizing diversion length.</p> …

    Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) 76(2), 215-220, 2020

    J-STAGE 

  • Comparison of the Diagnostic Value of Mono-exponential, Bi-exponential, and Stretched Exponential Signal Models in Diffusion-weighted MR Imaging for Differentiating Benign and Malignant Hepatic Lesions

    Noda Yoshifumi , Goshima Satoshi , Fujimoto Keita , Akamine Yuta , Kajita Kimihiro , Kawai Nobuyuki , Matsuo Masayuki

    … and the distributed diffusion coefficient (DDC) and water molecular diffusion heterogeneity index (<i>α</i>) from a stretched exponential model. …

    Magnetic Resonance in Medical Sciences, 2020

    J-STAGE 

  • Evaluation of Pore Structure of Sand using Soil Water Characteristic Curve  [in Japanese]

    杉井 俊夫 , 川部 らら

    地盤工学会誌 = Geotechnical engineering magazine : 土と基礎 67(9), 12-15, 2019-09

  • PREDICTION OF ENERGY CONSUMPTION IN VWV SYSTEM BY MINIMUM DIFFERENTIAL PRESSURE CONTROL  [in Japanese]

    TOGASHI Eisuke

    … For this purpose, a new water circuit model that can easily construct a parallel flow network of free depth without convergence calculation was developed. … Therefore, the resistance curve must be set appropriately by capturing the load distribution characteristics of the HVAC (Heating, Ventilation, and Air Conditioning) system. …

    Journal of Environmental Engineering (Transactions of AIJ) (757), 281-289, 2019-03

    J-STAGE  AIJ 

  • Estimation of Pore Size Distribution of Sand Using Soil Water Characteristic Curve  [in Japanese]

    杉井 俊夫 , 川部 らら

    … We developed a soil water retentivity test which can continuously obtain data and evaluate the pore size distribution from soil water characteristic curve. …

    総合工学 (31), 12-21, 2019-03

    IR 

  • PROTECTED LOSS OF FLOW ACCIDENT SIMULATION IN CIRCE-HERO FACILITY: EXPERIMENTAL TEST AND SYSTEM CODE ASSESSMENT

    Lorusso Pierdomenico , Pesetti Alessio , Tarantino Mariano , Narcisi Vincenzo

    … In the framework of the Generation IV ALFRED (Advanced Lead Fast Reactor European Demonstrator) design, a dedicated Test Section (TS) named HERO (Heavy liquid mEtal pRessurized water cOoled tubes) has been implemented in the large LBE (Lead-Bismuth Eutectic) pool integral effect CIRCE (CIRColazione Eutettico) facility at CR ENEA Brasimone. …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 2269, 2019

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  • Some Laboratory Scale Tests on An Australian Coal Tailings Sample

    Liao Sihe , Mishra Partha Narayan , Scheuermann Alexander

    … In order to avert the risk of fluidization and associated failures of coal tailing dams, dewatering is necessary to be applied for reducing their water content. … Furthermore, hydraulic and volume change response of the sample subjected to changing moisture content have been studied through soil-water retention curve (SWRC) and soil shrinkage characteristic curve (SSCC).</p> …

    Japanese Geotechnical Society Special Publication 7(2), 445-449, 2019

    J-STAGE 

  • Macroscopic and microscopic study of unsaturated shear strength behaviour of type-F fly ash

    Kantesaria Naman , Gupta Kanika , Sachan Ajanta

    … A series of filter paper tests and consolidated undrained (CU) triaxial tests were conducted to obtain the soil water characteristic curve (SWCC) and effective shear strength parameters (c' …

    Japanese Geotechnical Society Special Publication 7(2), 686-693, 2019

    J-STAGE 

  • Effect of grain-size distribution on hydraulic anisotropy of unsaturated soils

    Rahardjo H. , Satyanaga A.

    <p>As slope failures induced by rainfall are universal problems, especially in areas covered by residual soils, slope preventive system is necessary to avoid casualties. One effectively-proven a …

    Japanese Geotechnical Society Special Publication 7(2), 376-381, 2019

    J-STAGE 

  • The role of pore-size distribution function on the estimation of engineering properties of unsaturated soil

    Zhai Q. , Rahardjo H. , Satyanaga A. , Dai GL , Zhao XL

    … The soil particles have different sizes with certain statistical distribution which are commonly described using grain-size distribution curve (GSD). … The characteristic of GSD has significant effects on the engineering properties of the soil (especially for coarse-grained soil). … For the soil with insignificant volume change, the soil-water characteristic curve (SWCC) is considered to be analogous to the PSD. …

    Japanese Geotechnical Society Special Publication 7(2), 382-389, 2019

    J-STAGE 

  • Comparison of air entry values from soil water retention and volumetric shrinkage characteristic curves

    Tehrani K. , Zhang Y. , Scheuermann A. , Williams D.J.

    … <p>The soil water retention curve (SWRC) is the relationship between the volumetric water content and the matric suction of an unsaturated soil. … The volumetric water content at the AEV can also be identified from the evolution of the volumetric shrinkage characteristic curve (VSCC). …

    Japanese Geotechnical Society Special Publication 7(2), 340-343, 2019

    J-STAGE 

  • Incorporating suction in to the interpretation of plate load tests on unsaturated soils

    Tang Yi , Vo Thanh , Taiebat Hossein A. , Russell Adrian R.

    … It is also shown that the effect of suction on the bearing capacity is dependent on the initial location of the hydraulic state on the soil-water characteristic curve. …

    Japanese Geotechnical Society Special Publication 7(2), 352-359, 2019

    J-STAGE 

  • A simple and practical method for predicting soil water characteristic curve based on grading parameters

    Zhang Junran , Wang Xingcui , Lin Yehui , Jiang Tong

    … <p>For unsaturated soils, the soil water characteristic curve (SWCC), which represents the relationship between degree of saturation and suction, is a crucial function for determining both the soil hydraulic property and its coupled mechanical properties. … By means of the regression analysis between the grading parameters and fitting parameters of SWCC, a simple and practical method was proposed for predicting the SWCC curve based on the grading parameters. …

    Japanese Geotechnical Society Special Publication 7(2), 293-296, 2019

    J-STAGE 

  • A simple method of estimating soil-water characteristic curve using point pedotransfer functions

    Zou L. , Leong E.C.

    … <p>The soil-water characteristic curve (SWCC) is an essential property in unsaturated soil mechanics. … The point PTFs give the water contents at several suctions while the parametric PTFs give the values of the parameters in SWCC equations. …

    Japanese Geotechnical Society Special Publication 7(2), 287-292, 2019

    J-STAGE 

  • Application of the Kita-Sako model to soil-water characteristic curves of bentonite/sand mixture

    Sako Kazunari , Sato Shin , Moriiwa Motoki , Fukaya Masaaki , Yamamoto Syuichi , Ito Shinichi , Kitamura Ryosuke

    … Soil-water characteristic curve (SWCC) of the Bentonite/Sand Mixture is one of the important parameters in the T-H-M analysis. …

    Japanese Geotechnical Society Special Publication 7(2), 179-184, 2019

    J-STAGE 

  • SWCC of crushed bentonite under high suction ranges

    Narushima Seiichi , Arai Yasunori , Sakoda Yuki , Nishimura Tomoyoshi

    … <p>This study focused on soil-water characteristic curve (SWCC) such as hydro-mechanical properties for crushed bentonite The SWCC recognized as significant physical property, play to evaluate hydro conductivity and swelling property High suction was applied used vapor pressure technique with various salt solutions. …

    Japanese Geotechnical Society Special Publication 7(2), 168-173, 2019

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  • Study on unsaturated mechanical properties of lignin-lime improved silt

    Yanmei Zhang , Jincheng Liu , Xiaofeng Zhang , Feifei Cheng

    … Based on the lignin-lime composite modifier blending ratio recommended by the unconfined compressive strength test, the soil-water characteristic curve and unsaturated shear strength of the lignin-lime improved Yellow River alluvial silt were studied through a series of experiments. …

    Japanese Geotechnical Society Special Publication 7(2), 125-132, 2019

    J-STAGE 

  • Suction stress via thermo-servo/constant-water content ring shear testing

    Patil Ujwalkumar D. , Hoyos Laureano R. , Yepes Jairo E. , Puppala Anand J. , Congress Surya S. C.

    … The purpose of this study is to present soil suction characteristic curve (SSCC) for compacted high plasticity clay in light of the recent experimental data obtained from temperature controlled/constant water content ring shear testing over a matric suction range varying between 0-200 kPa. …

    Japanese Geotechnical Society Special Publication 7(2), 110-114, 2019

    J-STAGE 

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