Print Email Facebook Twitter Field experiments at three sites to investigate the effects of age on steel piles driven in sand Title Field experiments at three sites to investigate the effects of age on steel piles driven in sand Author Carroll, R. (Norwegian Geotechnical Institute) Carotenuto, P. (Norwegian Geotechnical Institute) Dano, C. (Université Grenoble Alpes) Salama, I. (Université Grenoble Alpes) Silva, M. (Universidad Técnica Federico Santa María) Rimoy, S. (University of Dar Es Salaam) Gavin, Kenneth (TU Delft Geo-engineering) Jardine, R. (Imperial College London) Date 2020 Abstract This paper investigates the influences that steel type, in situ soil properties, water table depth, pile diameter, roughness and driving procedures have on the ageing behaviour of piles driven in sand. Tension tests have been performed on 51 open-ended steel micro-piles, with 48 to 60 mm outside diameter, driven at well-established research sites at Larvik in Norway, Dunkirk in France and Blessington in Ireland to better understand the processes that control axial capacity set-up trends in the field. Mild steel, stainless and galvanised steel micro-piles were driven and left to age undisturbed for periods of between 2 h and 696 days before being subjected to first-time axial tension load tests. In addition to reporting and interpreting these experiments, further investigations of the sites' geotechnical profiles are reported, including new piezocone and seismic cone penetration soundings as well as laboratory tests. Integration with earlier ageing studies at the same sites with larger (340 to 508 mm outside diameter) open-ended steel piles driven to 7 to 20 m embedments and experiments that varied the piles' initial surface roughness shows that corrosion, pile scale, roughness, the bonding of soil particles and the driving process can all be highly significant. New insights are gained into the mechanisms that control the axial capacity of piles driven in sand. Subject model testsoffshore engineeringpiles & pilingsandstime dependence To reference this document use: http://resolver.tudelft.nl/uuid:51d85957-38e9-410d-9ad5-2f7b9fcddca3 DOI https://doi.org/10.1680/jgeot.17.P.185 Embargo date 2020-11-18 ISSN 0016-8505 Source Geotechnique: international journal of soil mechanics, 70 (6), 469-489 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2020 R. Carroll, P. Carotenuto, C. Dano, I. Salama, M. Silva, S. Rimoy, Kenneth Gavin, R. Jardine Files PDF jgeot.17.p.185.pdf 2.7 MB Close viewer /islandora/object/uuid:51d85957-38e9-410d-9ad5-2f7b9fcddca3/datastream/OBJ/view