Abstract
The thermal cone penetration test (T-CPT) allows in situ measurement of the thermal properties of soil during a CPT-that is without withdrawing the CPT tool and introducing another tool such as a thermal needle probe. An interpretation method is presented based on one-dimensional axisymmetric analytical solutions. Numerical verification of the method is given and numerical simulations are presented to derive a calibration factor required for the interpretation model. This factor accounts for the temperature sensor location and two-dimensional geometric effects, particularly internal voids and end effects for the cone penetrometer. Finally field data are presented for the T-CPT and compared with results from in situ needle probe tests and laboratory tests on sampled material. The interpretation model is able to provide thermal conductivity values robustly.
Original language | English |
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Pages (from-to) | 580-592 |
Number of pages | 13 |
Journal | Geotechnique |
Volume | 69 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1 Jul 2019 |
Keywords
- in situ testing
- Penetrometers
- Temperature effects
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Example calculation sheet for Thermal Cone Penetration Test (T-CPT)
Vardon, P. J. (Creator), Baltoukas, D. (Creator) & Peuchen, J. (Creator), TU Delft - 4TU.ResearchData, 5 Jun 2018
DOI: 10.4121/UUID:C2E3CEE3-0B22-474A-9D4E-7712335A0D00
Dataset/Software: Dataset