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Lehane, Barry
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Publications (6/6 displayed)
- 2024The role of physicochemical processes in aging of shaft friction of driven steel piles in sandcitations
- 2022Non-Destructive Evaluation of Mortar with Ground Granulated Blast Furnace Slag Blended Cement Using Ultrasonic Pulse Velocitycitations
- 2018Full scale instrumented pile response in moderately cemented calcareous soil
- 2016Stress-strain response of fine silica sand using a miniature pressuremeter
- 2016Stress-strain response of fine silica sand using miniature pressuremeter.
- 2010Shallow foundation performance in a calcareous sand
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document
Full scale instrumented pile response in moderately cemented calcareous soil
Abstract
<p>The design of drilled and grouted piles in carbonate soils remains a challenging geotechnical problem primarily due to high variability in the levels of cementation. Carbonate rocks encountered in offshore Australia typically comprise well cemented calcarenites embedded within loose and poorly cemented sands and silts. This paper extends the sparse database of instrumented axial load tests on drilled and grouted piles in similar conditions by presenting the results from static tension tests and tension cycling of three piles with diameters ranging from 225mm to 450mm. Constant normal stiffness shear tests, including cycling, are presented to assist interpretation of the pile tests. Shaft frictions inferred from strain gauge measurements are compared with CPT q<sub>c</sub> data and a design correlation for the relationship with q<sub>c</sub> is suggested by combining the trends observed with the results of other experimental studies on grouted piles in calcarenite. It is also shown that the cyclic response can be captured using the measured monotonic response combined with the algorithm employed in the RATZ load transfer software.</p>