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Prediction of unconfined compressive strength by ultrasonic testing
Swedish Geotechnical Institute.
Swedish Geotechnical Institute.
2012 (English)In: Proceedings of the 16th Nordic Geotechnical Meeting, NGM 2012, 16, Copenhagen, 9-12 May, 2012, Copenhagen: Dansk Geoteknisk Forening, DGF , 2012, Vol. 1, p. 61-68Conference paper, Published paper (Refereed)
Abstract [en]

At the Swedish Geotechnical Institute, soil mechanics laboratory, a number of specimens of stabilised sand with Portland cement have been tested with Ultrasonic testing method prior to unconfined stress tests in order to determine the seismic properties of the stabilised sand. The objective of this study was to evaluate a non-destructive method, ultrasonic testing, for assessing the compressive wave velocity in stabilised sand in the laboratory. Ultrasonic measurements were done with the sample still in the test tube which allowed continuous measurements of the curing process in stabilised sand. In parallel to the ultrasonic testing method, the resonant column free-free method was used for comparison. The tests showed that uncemented sand could not transmit an ultrasonic signal. The energy loss (damping) is large in contact points of the particles which prevents the signal from propagating through the specimen. The compressive wave velocities measured on the stabilised specimens, were not the same for the ultrasound and the resonant column tests. The reason for the difference in compressive wave velocity in the two methods needs further investigations in future studies. The results obtained from this study suggested that ultrasonic wave measurements can be used in combination with other forms of laboratory testing.

Place, publisher, year, edition, pages
Copenhagen: Dansk Geoteknisk Forening, DGF , 2012. Vol. 1, p. 61-68
Keywords [en]
Sand, Soil stabilization, Cement, Wave velocity, Compression, Compressive strength, Ultrasonic, Resonant column test, Bender element, Laboratory test, Conference, Copenhagen, 2012, English
National Category
Geotechnical Engineering
Identifiers
URN: urn:nbn:se:swedgeo:diva-847Local ID: 000075907OAI: oai:DiVA.org:swedgeo-847DiVA, id: diva2:1362384
Conference
16th Nordic Geotechnical Meeting, NGM 2012, 16, Copenhagen, 9-12 May, 2012
Note

Dansk Geoteknisk Forening, DGF Bulletin 27

Available from: 2019-10-18 Created: 2019-10-18 Last updated: 2019-10-18

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CiteExportLink to record
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Citation style
  • apa
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