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Engineering classification of some Australian arid zone soils
51A 862095 Resonant column apparatus for corrse-grahted materials. Technical note Heiniger, C; Studer, J A Geotech Test J V8, N3, Sept 1985, P132-136 . A resonant column apparatus is described which can test coarse grained dam engineering materials and fine grained soils. Dynamic properties of material up to medium gravel (25mm grain size) can be measured on specimens up to 15cm diameter and 45cm long at ambient air pressures to 600kPa. Compressive and torsional wave propagation at strains of the order O.OOOl%, or into the non-linear range (up to O.OS%), can be examined.
8620% Effect of grain characteristics on liquefaction potential -in search of standard sand for cyclic strength. Technical note Ishibashi, I Geotech Test J V8, N3, Sept 1985, P137-139 To find a replacement for Monterey 0 sand for cyclic triaxial testing system calibration, liquefaction potentials were evaluated for Monterey 0 and O/30 sands and for ASTM C 109 Ottawa sands from various sources. Results indicate liquefaction potentials to be sensitive to slight changes in material properties such as mean grain size, coefficient of uniformity, sphericity or volume decrease potential. As fabric may be changed by specimen preparation, age or history, it will be necessary to clearly define any standard testing method.
862097 Acoustic emission and wave propagation monitoring at the spent fuel test: Climax, Nevada Majer, E L; McEvilly, T V Znt J Rock Mech Min Sci V22, N4, Aug 1985, P215-226 The results are presented of over three and a half years of continuous monitoring of transient acoustic emission events and the P- and S-wave velocities and amplitudes, monitored by a 15-station 1-IOkHz bandwidth seismographic network, in a heated underground test repository, before, during, and after the storage of the spent fuel. The experimental procedures are discussed briefly. The effects seen are postulated to be. due to crack closure and dewatering of the rock mass.
862098 In situ determination of the dynamic moduii of elasticity of coal. Technical note van Heerden, W L Znt J Rock Mech Min Sci V22, N5, Ott 1985, P339-343 The displacement and deformation of rock in the vicinity of any structure such as a mining excavation, tunnel or foundation is related to the moduli of elasticity of the rock mass. In order to predict displacements during the design stage, it is necessary to know the moduli of the various rock masses. A special borehole clamp was used to provide a torsional energy impulse to the walls of a borehole in this investigation. The moduli determined from velocity and frequency (Petite Sismique) measurements in the field were compared with the results obtained from static and dynamic tests in the laboratory on cylindrical core specimens from the coal seam. 0
Wave propagation in fluid-saturated porous media: an efficient finite element procedure Prevost, J H Soil Dynam Earthq Engng V4, N4, Ott 1985. P183-202 An efficient finite element procedure to analyse wave propagation in a fluid saturated porous medium, modelled as a two phase (solid and liquid) system, is presented. The fluid may be assumed incompressible or compressible, depending on the intended applications. Numerical results are presented: (1) a one dimensional wave propagation simulation in a linear and a non-linear porous column and (2) a two dimensional seismic induced liquefaction simulation in a saturated cohesionless (nonlinear, hysteretic) backfill behind a flexible retaining structure. 862100 Equivalent properties for layered media Hadjian, A H; Ellison, B Soil Dynam Earthq Engng V4, N4. Ott 1985, P203-209 Layered systems or soils with depth dependent characteristics are often encountered. A simple, relatively accurate method is proposed to calculate the equivalent elastic properties in these cases. Each layer is weighted according to its physical characteristics and its estimated stress level, leading to equivalent moduli for each degree of freedom. Calculated impedance coefficients provide good estimates of the ‘correct’ analytical results for layered media. This method is recommended for preliminary designs.
Identification and classification 862101 Granular loess classification based on loessial fraction Browzin, B S BuU Assoc Engng Geol V22. N2, May 1985. P217-227 On the basis of analyses of samples from three continents, it is concluded that the O.Ol-0.5mm fraction deserves the name loessial fraction. Using this concept, a granulometric classification of loess is proposed. The granulometric composition, chosen as the first essential and nonarbitrary characteristic of loess and loess-like formations, provides a definite borderline to delineate loess from loess-like sediments. The proposed classification of loess and loess-like sediments, based on the relative amount of coarse and fine fractions, provides a numerical definition of the adjectives clayey and sandy as applied to loess and loess-like deposits. A triangular chart is used to classify loess. 862102 Engineering chrssification of some Australian arid zone soils Akpokodje, E G Znt Assoc Engng Geol BUZZN31, June 1985, M-8 The geotechnical properties of calcareous and gypsiferous soils from semi arid Australia are examined. The difficulties involved in their identification and classification, using particle size distribution and Atterberg limits, are discussed. It is concluded that their classification should therefore be based mainly on the presence and quantity of gypsum or carbonate. 862103 Soil classitkation for earthmoving (In French) Bourguet, J L, Broquet, P; Rousseau, J Znt Assoe Engng Geol BUZZN31, June 1985. P25-33 In order to define a simple, yet complete, soil classification, two main properties were used to characterize the soils behaviour as completely as possible, the standard granulometry
1986 Pergamon Press Ltd. Reproduction
not permitted
8620% Effect of grain characteristics on liquefaction potential -in search of standard sand for cyclic strength. Technical note Ishibashi, I Geotech Test J V8, N3, Sept 1985, P137-139 To find a replacement for Monterey 0 sand for cyclic triaxial testing system calibration, liquefaction potentials were evaluated for Monterey 0 and O/30 sands and for ASTM C 109 Ottawa sands from various sources. Results indicate liquefaction potentials to be sensitive to slight changes in material properties such as mean grain size, coefficient of uniformity, sphericity or volume decrease potential. As fabric may be changed by specimen preparation, age or history, it will be necessary to clearly define any standard testing method.
862097 Acoustic emission and wave propagation monitoring at the spent fuel test: Climax, Nevada Majer, E L; McEvilly, T V Znt J Rock Mech Min Sci V22, N4, Aug 1985, P215-226 The results are presented of over three and a half years of continuous monitoring of transient acoustic emission events and the P- and S-wave velocities and amplitudes, monitored by a 15-station 1-IOkHz bandwidth seismographic network, in a heated underground test repository, before, during, and after the storage of the spent fuel. The experimental procedures are discussed briefly. The effects seen are postulated to be. due to crack closure and dewatering of the rock mass.
862098 In situ determination of the dynamic moduii of elasticity of coal. Technical note van Heerden, W L Znt J Rock Mech Min Sci V22, N5, Ott 1985, P339-343 The displacement and deformation of rock in the vicinity of any structure such as a mining excavation, tunnel or foundation is related to the moduli of elasticity of the rock mass. In order to predict displacements during the design stage, it is necessary to know the moduli of the various rock masses. A special borehole clamp was used to provide a torsional energy impulse to the walls of a borehole in this investigation. The moduli determined from velocity and frequency (Petite Sismique) measurements in the field were compared with the results obtained from static and dynamic tests in the laboratory on cylindrical core specimens from the coal seam. 0
Wave propagation in fluid-saturated porous media: an efficient finite element procedure Prevost, J H Soil Dynam Earthq Engng V4, N4, Ott 1985. P183-202 An efficient finite element procedure to analyse wave propagation in a fluid saturated porous medium, modelled as a two phase (solid and liquid) system, is presented. The fluid may be assumed incompressible or compressible, depending on the intended applications. Numerical results are presented: (1) a one dimensional wave propagation simulation in a linear and a non-linear porous column and (2) a two dimensional seismic induced liquefaction simulation in a saturated cohesionless (nonlinear, hysteretic) backfill behind a flexible retaining structure. 862100 Equivalent properties for layered media Hadjian, A H; Ellison, B Soil Dynam Earthq Engng V4, N4. Ott 1985, P203-209 Layered systems or soils with depth dependent characteristics are often encountered. A simple, relatively accurate method is proposed to calculate the equivalent elastic properties in these cases. Each layer is weighted according to its physical characteristics and its estimated stress level, leading to equivalent moduli for each degree of freedom. Calculated impedance coefficients provide good estimates of the ‘correct’ analytical results for layered media. This method is recommended for preliminary designs.
Identification and classification 862101 Granular loess classification based on loessial fraction Browzin, B S BuU Assoc Engng Geol V22. N2, May 1985. P217-227 On the basis of analyses of samples from three continents, it is concluded that the O.Ol-0.5mm fraction deserves the name loessial fraction. Using this concept, a granulometric classification of loess is proposed. The granulometric composition, chosen as the first essential and nonarbitrary characteristic of loess and loess-like formations, provides a definite borderline to delineate loess from loess-like sediments. The proposed classification of loess and loess-like sediments, based on the relative amount of coarse and fine fractions, provides a numerical definition of the adjectives clayey and sandy as applied to loess and loess-like deposits. A triangular chart is used to classify loess. 862102 Engineering chrssification of some Australian arid zone soils Akpokodje, E G Znt Assoc Engng Geol BUZZN31, June 1985, M-8 The geotechnical properties of calcareous and gypsiferous soils from semi arid Australia are examined. The difficulties involved in their identification and classification, using particle size distribution and Atterberg limits, are discussed. It is concluded that their classification should therefore be based mainly on the presence and quantity of gypsum or carbonate. 862103 Soil classitkation for earthmoving (In French) Bourguet, J L, Broquet, P; Rousseau, J Znt Assoe Engng Geol BUZZN31, June 1985. P25-33 In order to define a simple, yet complete, soil classification, two main properties were used to characterize the soils behaviour as completely as possible, the standard granulometry
1986 Pergamon Press Ltd. Reproduction
not permitted