Effects of Sample Preparation on Sand Liquefaction

by J. Paul Mulilis, (A.M.ASCE), Research Engr.; Waterways Experiment Station, Vicksburg, Miss.,
Kandiah Arulanandan, (M.ASCE), Assoc. Prof. of Civ. Engrg.; Univ. of California, Berkeley, Calif.,
James K. Mitchell, (F.ASCE), Prof. of Civ. Engrg.; Univ. of California, Berkeley, Calif.,
Clarence K. Chan, (M.ASCE), Research Engr.; Univ. of California, Berkeley, Calif.,
H. Bolton Seed, (M.ASCE), Prof. of Civ. Engrg.; Univ. of California, Berkeley, Calif.,


Serial Information: Journal of the Geotechnical Engineering Division, 1977, Vol. 103, Issue 2, Pg. 91-108


Document Type: Journal Paper

Abstract: The results of undrained stress controlled cyclic triaxial tests indicated that the dynamic strength of saturated sands, remolded to the same density by different compaction procedures, was significantly different. Variations in the dynamic strength of Monterey No.0 sand were found to be in the order of —100%; however, tests on other sands indicated that the magnitude of the effect of the method of preparation used may be a function of the type of sand. Fabric studies and electrical conductivity measurements indicated that the orientation and arrangement of the contacts between sand grains were probably the primary reasons for the observed differences in the dynamic strength of Monterey No.0 sand. Comparisons indicated that specimens prepared by moist tamping or moist vibratory compaction would exhibit dynamic strengths most similar to those of undisturbed samples; however, in most cases, the strength of undisturbed samples ranged from 0% to 45% higher than that of samples prepared by moist tamping.

Subject Headings: Soil strength | Soil analysis | Moisture | Triaxial loads | Triaxial tests | Saturated soils | Compacted soils

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