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Impact of temperature variation on penetration test parameters in compacted soils

Abstract : In geotechnical engineering, the proper design of thermo-active geostructures (piles, foundations, etc.) and deep waste storage disposals requires a better understanding of the thermo-hydro-mechanical behaviour of natural and compacted soils. Important mechanical parameters of the soils such as the cone resistance (qc) and the friction sleeve resistance (fs) are usually obtained by penetration in-situ tests. In the present study, penetration tests adapted from the static penetration method were conducted in laboratory, using a mini-penetrometer, to characterise compacted samples. The objective was to examine and quantify the influence of temperature changes on penetration parameters of two different compacted soils. Samples of an illitic material and the kaolinite–sand mixture compacted at different initial water contents and dry densities were subjected to a range of temperatures from 1 to 70 °C. The cone resistance (qc) and the friction sleeve resistance (fs) were measured. Obtained results showed that the particle size, the density and the nature of compacted soils have an important effect on the penetration test parameters. For illitic samples, we obtained significant variation of the cone resistance and friction sleeve resistance with temperature on the dry side of the compaction curve while limited changes were observed on the wet side. For the kaolinite–sand mixture, the temperature effect on these two parameters was negligible.
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Contributor : Sandrine Rosin-Paumier <>
Submitted on : Tuesday, November 6, 2018 - 12:28:53 PM
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H. Eslami, S. Rosin-Paumier, A. Abdallah, F. Masrouri. Impact of temperature variation on penetration test parameters in compacted soils. European Journal of Environmental and Civil Engineering, Taylor & Francis, 2013, 19 (5), pp.628 - 648. ⟨10.1080/19648189.2014.960952⟩. ⟨hal-01913247⟩



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