Download or read book Dynamic Properties of Frozen Granular Soils written by John Chien-Chung Li and published by . This book was released on 1979 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Total Water Content on Dynamic Properties of Frozen Soils written by Masami Fukuda and published by . This book was released on 1991 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Properties of Frozen Cohesionless Soils Under Cyclic Triaxial Loading Conditions Vol II written by Ted S. Vinson and published by . This book was released on 1977 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Final report of research conducted under project entitled "Shear Moduli and Damping Factors in Frozen Soil". Cyclic triaxial tests were performed on laboratory prepared samples of frozen silt and sand as part of a long term study to evaluate dynamic properties of frozen soils under simulated earthquake and low frequency loading conditions.

Download or read book Dynamic Properties of Ice and Frozen Clay Under Cyclic Triaxial Loading Conditions written by Ted S. Vinson and published by . This book was released on 1976 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Dynamic Properties of Frozen Soils Under Cyclic Triaxial Loading Conditions written by Ronald Leo Czajkowski and published by . This book was released on 1977 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Properties of Frozen Cohesionless Soils Under Cyclic Triaxial Loading Conditions written by Ted S. Vinson and published by . This book was released on 1977 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A study of the dynamic properties of intact and reconstituted granular soils with varying fines content written by Bryan Scott Moulin and published by . This book was released on 1998 with total page 1150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Grain Size Distribution on Dynamic Properties of Granular Soils at Small Strains written by Houman Makarechi and published by . This book was released on 1981 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ground Freezing written by Hans L. Jessberger and published by Elsevier. This book was released on 2012-12-02 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developments in Geotechnical Engineering Volume 26: Ground Freezing presents the proceedings of the First International Symposium on Ground Freezing, held in Bochum, Germany on March 8-10, 1978. It summarizes progress in the application of the ground freezing technique in geotechnical engineering, with a focus on engineering with frozen soils and related frost research problems. It includes papers that discuss phase transformation of water, thermodynamics, heat and mass transfer, and mathematical models. The laboratory and theoretical studies of thermophysical and mechanical properties are discussed as well. Organized into 43 chapters, this volume begins with an overview of the freezing and thawing of soils, earth, and rock, and the engineering applications of the favorable properties of frozen ground. It then discusses the mechanical properties of artificially frozen soil for construction purposes, the principles of mechanical and thermal behavior of frozen soil, and the design and calculation of frozen soil-structures. Furthermore, it explains the calculation and dimensioning of refrigeration plants and monitoring of frost penetration. The methods and instrumentation for determining the locations of boundaries of frozen soils and the factors affecting the formation of soil cryogenic textures upon artificial active and passive soil freezing are described. The book also details the influence of salts in the pore water in freezing soils and explains how clay microstructure affects the amount of unfrozen water. In addition, it presents the physicomechanical and thermomechanical properties of frozen coarse-grained soil with sandy clay aggregate. This book will be a valuable source of information for scientists and engineers.

Download or read book Geological Survey of Canada Open File 932 written by and published by Natural Resources Canada. This book was released on with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Properties of Naturally Frozen Fairbanks Silt written by Charles Ralph Wilson and published by . This book was released on 1982 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of a long term study to evaluate the dynamic properties of naturally frozen soils, resonant frequency and cyclic triaxial tests were conducted on Fairbanks silt samples from the U.S. Army Cold Regions Research and Engineering Laboratory Permafrost Tunnel, Fox, Alaska. The test methods subject right cylindrical test specimens to various loading conditions simulating ground motions induced by vibrating machines, blasting, and earthquakes. Dynamic elastic properties (expressed in terms of dynamic Young's modulus, dynamic shear modulus, and longitudinal and compressional wave velocities) and energy absorbing properties (expressed as damping ratio) were determined. Resonant frequency tests were conducted prior to cyclic triaxial tests due to the potentially destructive nature of the cyclic triaxial equipment. During the resonant frequency testing sequence, the frozen specimens were subjected to increasing and decreasing confining pressures (0, 70, and 0 psi (0, 482, and 0 kN/m2)) at ascending test temperatures ( -10, -4, and -1°C (14, 25, and 30°F)). At each confining pressure, the specimen was tested in the longitudinal and torsional mode. During cyclic triaxial testing, each specimen was subjected to ascending temperatures ( -10, -4, and -1°C (14, 25, and 30°F)) and increasing strain amplitudes (.0009, .005, and .01%) at each temperature. For each strain amplitude, each specimen was subjected to increasing and decreasing confining pressures (0, 70, and 0 psi (0, 482, and 0 kN/m2)) and for each confining pressure the frequency was incrementally increased (.05, 0.5, and 5.0 Hz). The above testing sequence allowed an evaluation of the influence of the various dynamic loading parameters (strain amplitude, frequency, temperature, and confining pressure) on dynamic properties. In addition, the influence of material density, water content, and anisotropy were evaluated. Confining pressure, density, and water content were generally found to have little effect on either the dynamic moduli or damping ratio. Tests results indicate the dynamic moduli decreases with increasing strain amplitude and increases with increasing frequency and ascending temperature. The damping ratio generally increases with increasing axial strain amplitude and decreases with increasing frequency and descending temperature. For the various combinations of test parameters, the dynamic Young's modulus ranges from 0.1 x 10^6 to 2.4 x 10^6 psi (0.7 to 16.5 GN/m2), the dynamic shear modulus from 0.1 x 10^6 from 0.8 x 10^6 psi (0.7 to 5.5 GN/m2) and the damping ratio from .01 to .26. The relative effect of three differing specimen orientations on the dynamic properties could not be established. The test results obtained in the present study are in good agreement with the results obtained by previous investigators who evaluated dynamic properties of both reconstituted artificially frozen and naturally frozen silts. The test results from the present and previous studies indicate that dynamic properties of frozen silt are influenced primarily by material type and ice content. The ice structure (i.e., lense thickness, orientation, and spacing) does not appear to influence dynamic properties of silt. Based on this conclusion, it would appear that it is not necessary to test specimens obtained from naturally frozen in situ samples if artificially frozen test specimens are prepared in the laboratory at the same density and ice content as the in situ material.

Download or read book Dynamic Testing of Frozen Soils Under Simulated Earthquake Loading Conditions written by T. Chaichanavong and published by . This book was released on 1978 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineers concerned with the development of Alaska and other highly seismic areas underlain by permafrost must have knowledge of dynamic properties of frozen soils under earthquake loading conditions. In response to this need, a cyclic triaxial test system and test methods have been developed to evaluate the dynamic Young's modulus and damping ratio of artificially frozen soils over a range of test conditions which simulate earthquake loadings of permafrost deposits.

Download or read book The Response of Frozen Soils to Vibratory Loads written by Henry W. Stevens and published by . This book was released on 1975 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was conducted to provide reliable values of the stiffness and damping properties of frozen soils subjected to vibratory loads and to define the significant factors affecting these parameters. A laboratory test was conducted on prepared specimens of frozen soils wherein a right circular cylinder was subjected to steady-state sinusoidal vibration. The material was considered to be linearly viscoelastic. Analysis of test data based on one-dimensional wave propagation yielded the complex Young's modulus, the complex shear modulus, the phase velocity of wave propagation, the shear velocity, the damping property expressed as the angle representing time lag between stress and strain, an attenuation coefficient, and a complex Poisson's ratio. The frequency of vibration was varied from 500 to 10,000 Hz, and the peak dynamic stress was varied from 0.1 to 5.0 psi. Specimens were remolded or cored in-situ, frozen, and tested at temperatures of 0, +15 and +25 deg F.A few tests were conducted on identical soils nonfrozen. Tests results from a limited number of tests on selected soils indicate that the stiffness of these soils varies with the volume of ice/volume of soil ratio, and that ice is less stiff than saturated frozen soils. Frozen soils have stiffnesses up to 100 times those of identical soil nonfrozen. Depending upon the degree of ice saturation, the stiffness of non-saturated frozen soils varies from that of the saturated soils to nearly that of the nonfrozen soils. Stiffness increases with decreasing temperature but the rate is relatively low. As temperature rises and approaches the freezing point, stiffness abruptly decreases.

Download or read book Measuring Static and Dynamic Properties of Frozen Silty Soils written by and published by . This book was released on 1998 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: A mechanical characterization of frozen silty soils has been conducted to support computer modeling of penetrators. The soils were obtained from the Eilson AFB (Alaska) vicinity. Quasi-static testing with a multiaxial system in a cold room and intermediate strain rate testing with a split Hopkinson pressure bar were conducted. Maximum stresses achieved were slightly above 1 GPa, apparently limiting the observed behavior primarily to elastic compression and pore crushing phenomena. Lower temperatures seem to increase the strength of the material markedly, although not by a simple factor. Lower temperatures and higher strain rates increase the apparent Young's and bulk moduli as well (an increase of (approximately) a factor of two is observed for strain rate increasing from 0.001 s−1 to 800 s−1). The strength also depends strongly on strain rate. Increasing the strain rate from 0.001 −1 to 0.07 −1 increases the strength by a factor of five to ten (to values of order 1 GPa). However, only a small increase in strength is seen as strain rate is increased to (approximately) 102--103 s−1. The reliability of the strength measurements at strain rates

Download or read book Effects of Grain Size Distribution on Dynamic Properties and Liquefaction Potential of Granular Soils written by Nien-Yin Chang and published by . This book was released on 1982 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Properties of Stabilized Soils written by Mehmet Erdem Ardaman and published by . This book was released on 1955 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of the Geotechnical Engineering Division written by American Society of Civil Engineers. Geotechnical Engineering Division and published by . This book was released on 1980 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: