Development of a non-destructive procedure for estimating the length of in-situ soil nails

From National Research Council Canada

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Author	Search for: Pernica, G.¹; Search for: Law, K. T.; Search for: Glazer, R.¹; Search for: Lee, C. F.; Search for: Tham, L. G.; Search for: Yue, Q.
Affiliation	National Research Council of Canada. NRC Institute for Research in Construction
Format	Text, Article
Conference	55th Canadian Geotechnical Conference: 20 October 2002, Niagara Falls, Ontario
Abstract	Soil nails are used to stabilise soil embankments in the same way that rock anchors are placed to stabilise cuts into rock layers. Because of the large number of soil nails, which are installed every year in many parts of the world, particularly the Far East, a rapid and reliable method is desired to check the in-situ length of the nails. The industry tried to adopt the non-destructive sonic technique that measures the length of in-ground piles (ASTM D5882-00, Standard Test Method for Low Strain Integrity Testing of Piles) but the system showed severe limitations when it was applied to soil nails. A field procedure, which would reasonably estimate the lengths of installed nails, was therefore sought. This paper will present the difficulties encountered in trying to develop a practical test procedure using sonic wave techniques, the results of tests completed to date and the prospects for a successful outcome.
Publication date	2002-10-01
Language	English
Peer reviewed	Yes
NRC number	NRCC 46089 NRCC 15122
NPARC number	20386096
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Record identifier	27f3f5c7-0218-40ce-ac1a-0347d4883890
Record created	2012-07-25
Record modified	2020-03-30

Date modified:: 2024-07-17