Effect of Rate of Strain on the Strength of Remolded Soil

Hampton, Delon

doi:10.5703/1288284313554

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…During the past two decades, increased attention has been given to the study of strain rate effects on soil strength parameters. Taylor (1948) and Casagrande and Shannon (1949) substantiated and amplified by other investigators such as Casagrande and Wilson (1951), Whitman (1957Whitman ( , 1970, Hampton and Yoder (1958), and Healy (1963). Whitman (1957Whitman ( , 1970 has reported dynamic-static strength ratios of 1.5 to 2 for various types of clay for maximum strain rate ratio of 33333.…”

Section: Laboratory Test Results and Analysismentioning

confidence: 78%

Use of an impact penetrometer for the evaluation of the in‐situ strength of marine sediments

Dayal¹,

Allen²,

Jones

1975

Marine Geotechnology

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A description is given of the method used in evaluating the in-situ strength properties of soil from the results of impact penetrometer tests. The test results presented include both laboratory tests, conducted under controlled conditions, and field tests, obtained with a Marine Impact Penetrometer developed for shallow sub-bottom depth exploration. The test results indicate that with this system the dynamic strength profile and the soil type, thickness and depth of different layers can be directly evaluated up to the final depth of penetration. The depth of penetration obtained is a function of mass and geometry of the penetrometer and the subbottom soil conditions but a 1000 lb (453 kg) penetrometer should be capable of 50 ft (15 m) penetration in soft sediment. If a soil viscosity coefficient is correctly estimated, the static strength profile can be obtained from the dynamic strength profile by applying a correction for penetration rate effects. IntroductionThe ocean floor is one of the last unexplored frontiers on the earth. In recent years, a tremendous interest has been generated in its exploration for both military and civilian purposes. One fact is clear, increasing demands associated with an increasing population necessitates that technology turn to the ocean for food, energy, and other resources.The design of foundations for seafloor installations as well as most other applications of soil mechanics to marine work requires detailed information on

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