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Block sampling and test sample preparation of locked sands

Block sampling and test sample preparation of locked sands
Block sampling and test sample preparation of locked sands
After a long period of neglect there has been increasing interest in the sand/sandstone borderline materials, especially concerning the fabric components of their structure (Barton, 1993; Cuccovillo & Coop, 1997; Cuccovillo & Coop, 1999). An interlocked fabric in sands cannot be produced artificially, and investigations have to be carried out on intact samples of these materials. Progress has been delayed by the problem of sampling sands that owe their strength solely to fabric and have little or no bonding. They are extremely friable but resist cutting, owing to the dilation that occurs on disturbance. Locked sands are cut or reduced in size by a process of grain plucking, which can be achieved by abrasion or a scraping action. This paper describes advances made in cutting the samples out of the ground and manipulating them to the shape required for a test specimen. Although the saws were developed for locked sands they have been found useful for other materials such as clayey silts.
0016-8505
567-570
Cresswell, A.W.
dec05b35-af19-4309-9124-ed24c9df78e2
Cresswell, A.W.
dec05b35-af19-4309-9124-ed24c9df78e2

Cresswell, A.W. (2001) Block sampling and test sample preparation of locked sands. Geotechnique, 51 (6), 567-570. (doi:10.1680/geot.2001.51.6.567).

Record type: Article

Abstract

After a long period of neglect there has been increasing interest in the sand/sandstone borderline materials, especially concerning the fabric components of their structure (Barton, 1993; Cuccovillo & Coop, 1997; Cuccovillo & Coop, 1999). An interlocked fabric in sands cannot be produced artificially, and investigations have to be carried out on intact samples of these materials. Progress has been delayed by the problem of sampling sands that owe their strength solely to fabric and have little or no bonding. They are extremely friable but resist cutting, owing to the dilation that occurs on disturbance. Locked sands are cut or reduced in size by a process of grain plucking, which can be achieved by abrasion or a scraping action. This paper describes advances made in cutting the samples out of the ground and manipulating them to the shape required for a test specimen. Although the saws were developed for locked sands they have been found useful for other materials such as clayey silts.

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More information

Published date: August 2001
Organisations: Civil Engineering & the Environment

Identifiers

Local EPrints ID: 75808
URI: https://eprints.soton.ac.uk/id/eprint/75808
ISSN: 0016-8505
PURE UUID: 35bd3f0b-3f4c-45a5-b3e1-89759029842e

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:42

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