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

Publisher Website
Google Scholar
Abstract
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 sub‐bottom 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.
Keywords

This publication has 8 references indexed in Scilit: