... values obtained from the 45-mm sampler were 20 % to 40 % greater than those of the 75-mm sampler and their sample quality therefore higher. microstructure clay deposits strength consolidation sample disturbance Takaharu Shogaki1 Journal of ASTM International, Vol. 3, No. 7 Paper ID JAI13349...

... The paper presents a review of some sampling techniques for soft ocean sediments. The review includes a few new developments, which have been the result of recent waste disposal research programs. Emphasis of the paper is put on the problem of sample disturbance. Various sources of disturbance...

... to ascertain the stress history of the deposit. triaxial test cohesive soils laboratory testing equipment testing procedures corrections testing errors undrained strength anisotropy sample disturbance strain rate stress-strain John T. Germaine^ and Charles C. Ladd^ STATE-OF-THE-ART PAPER...

... Engineering Properties (SHANSEP). Unfortunately, these soils are highly susceptible to sampling disturbance because of the unavoidable low effective stress that remains in specimens after sampling. Sampling disturbance obscures consolidation behavior, making it difficult to estimate the in situ...

... data confirm that cyclic shear strain is the fundamental parameter governing pore pressure buildup, because strain-controlled tests essentially eliminate the influence of specimen fabric and sample disturbance. Also, the results indicate that the cyclic triaxial test can be used to model cyclic simple...

... and the interpretation include steps to account for the effects of sample disturbance. A new method for determination of the coefficient of consolidation is presented. oedometer test clay sample disturbance procedures coefficient of consolidation G. Sandbaekken,^ T. Berre, ' and S. Lacasse^ Oedometer...

... In order to overcome the limited recovered lengths and sample disturbance associated with driven sampling, long stroke hydraulic push or piston samplers have been developed for offshore operations in recent years. Use of such samplers, however, does not always result in recovered sample lengths...

... modulus normalization techniques soils sample disturbance laboratory tests data analysis V. p. Dmevich' Normalized Stress-Strain for Undrained Shear Tests REFERENCE: Drnevich, V. P., "NomuUzed Stress-Strain for Undrained Shear Tests," Laboratory Shear Strength of Soil, ASTM STP 740, R. N. Yong...

... of this wedge. varved silt silt shear strength angle of internal friction borehole shear test cone penetrometer test triaxial test sample disturbance active earth pressure J. R. Lambrechts^ and J. J. Rixner^ Comparison of Shear Strength Values Derived from Laboratory Triaxial, Borehole Shear...

... of the modulus of deformation of a stiff fissured clay is presented. The effects of sample disturbance, strain rate of compression, anisotropy, sample size, and confining pressure on the modulus value were investigated in the laboratory. These results were compared with modulus values obtained from plate loading...

... by boring from the surface do not produce satisfactory undisturbed samples in this material. sampling sample disturbance marine clays consolidation shear strength vane test evaluation tests W. J. Eden 1 Sampler Trials in Overconsolidated Sensitive Clay REFERENCE: Eden, W. J., "Sampler Trials...

.... sampling quick clays marine clays sample disturbance shear strength compression index piston sampler evaluation tests Pierre La Rochelle 1 and Guy Lefebvre ~ Sampling Disturbance in Champlain Clays REFERENCE: La Rochelle, Pierre and Lefebvre, Guy, "Sampling Disturbance in Champlain Clays...

... procedure. For the same reason only the results obtained from the specimens having almost the same initial water content and void ratio were taken into consideration. sample disturbance elastic properties sensitive clays anisotropy plate loading test shear strength Shelby Piston Block...

... to borehole methods, the Pitcher sampler is judged preferable because samples can be recovered from stiff clays and soft rocks with a higher recovery ratio and with greater ease. sample disturbance samplers drilling sampling clays glacial till boreholes evaluation tests N. R. Morgenstern 1and...