Affiliation:
1. Priority Research Centre for Geotechnical Science and Engineering, School of Engineering, The University of Newcastle, Callaghan NSW 2308, Australia.
Abstract
This paper describes an experimental investigation of a newly developed driven and grouted soil nail (x-Nail), which combines the capabilities of a purely frictional driven nail and a compaction-grouted nail. The innovative design allows the x-Nail to be driven into the ground with a latex balloon attached that is subsequently used for compaction grouting. A grout bulb is thus formed at the driven end of the nail to improve its pull-out resistance. For compaction grouting, a special type of additive−mixed cement grout was used in this investigation because of its zero bleeding and high bond strength. A series of pullout model tests was conducted to examine the performance of the x-Nail compared to a purely frictional soil nail. It was found that more than 90% of the pullout force of the x-Nail was resisted by the expanded grout bulb and the end bearing resistance of the grout bulb increased with the increment of the injected grout volumes. The experimental results revealed that the pullout force of the x-Nail increased approximately 1800%, 1550%, 1200%, and 900% compared to the purely frictional soil nail for the injected grout volumes of about 350, 270, 220, and 170 mL, respectively.
Publisher
Canadian Science Publishing
Subject
Civil and Structural Engineering,Geotechnical Engineering and Engineering Geology
Reference22 articles.
1. Bezuijen, A. 2010. Compensation grouting in sand-experiments, field experiences and mechanisms. PhD thesis, Department of Geotechnology, Delft University of Technology, the Netherlands.
2. Bhuiyan, M.Z.I., Wang, S., Carter, J.P., and Raka, T.M. 2020a. An innovative driven soil nail (x-nail): a promising alternative to conventional soil nails. In Proceedings of Geo-Congress 2020, Minnesota, USA. pp. 383–393. 10.1061/9780784482797.038.
3. Bhuiyan, M.Z.I., Wang, S., Carter, J.P., and Raka, T.M. 2020b. Calibration and assessment of capacitance-based soil moisture sensors. In Proceedings of Geo-Congress 2020, Minnesota, USA. pp. 754–766. 10.1061/9780784482797.074.
4. Bluey Technologies. 2017. BluCem HS200A: PT cable grout additive. Bluey Technologies Pty Ltd., Australia. pp. 1–4.
5. Fanchi, J.R. 2010. Fluid properties. In Integrated reservoir asset management. Edited by J.R. Fanchi. Gulf Professional Publishing, Burlington, Mass. pp. 17–32.
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