A simple methodology to obtain critical state parameters of remolded clays under normally consolidated conditions using the fall cone test

Farias, M. M. and Llano-Serna, M. A. (2016) A simple methodology to obtain critical state parameters of remolded clays under normally consolidated conditions using the fall cone test. Geotechnical Testing Journal, 39 5: . doi:10.1520/GTJ20150207

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Author Farias, M. M.
Llano-Serna, M. A.
Title A simple methodology to obtain critical state parameters of remolded clays under normally consolidated conditions using the fall cone test
Journal name Geotechnical Testing Journal   Check publisher's open access policy
ISSN 0149-6115
1945-7545
Publication date 2016-09
Sub-type Article (original research)
DOI 10.1520/GTJ20150207
Open Access Status File (Publisher version)
Volume 39
Issue 5
Total pages 10
Place of publication Conshohocken, PA, United States
Publisher ASTM International
Collection year 2017
Language eng
Abstract The falling cone is widely used as a laboratory test to determine the liquid limit for the characterization of clay soils. However, remolded undrained shear strength and deformability and strength parameters of critical state models can also be estimated. The objective of this paper is to show a simple methodology to determine these important parameters for engineering simulations. Controlled laboratory tests were carried out on kaolin clay samples using a cone with 30° of tip angle and 30 g of mass. Mini-vane tests were also performed to determine the remolded undrained shear strength of the samples. The experimental results were used to calibrate the Hansbo cone factor, K, from which it is possible to relate the undrained shear strength and the cone penetration for different water contents. The study shows that a calibrated cone and the proposed methodology may be used to estimate strength and deformability parameters for preliminary stages of design involving remolded clays under normal consolidation conditions in a quick way and at very low cost.
Keyword Fall-cone test
Normally consolidated clays
Undrained shear strength
Critical state parameters
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
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Created: Wed, 03 Aug 2016, 18:29:14 EST by Marcelo Llano Serna on behalf of School of Civil Engineering