Abstract
The shrink-swell phenomenon in expansive clays are usually followed by irreversible damages on constructions. To investigate the soil behavior, Geotechnical diagnostic methods are adapted which provide basic information on the soil and its shrink swell characteristics. However, in order to better understand this phenomenon, it is crucial to investigate their swelling potential along with their water retention properties. In this study, some clayey soil samples from different places in France were tested followed by a shrink-swell hazard. The geotechnical properties of these soils allowed the characterization of their swelling potential based on seven different methods. Thereafter, the retention properties of these samples were investigated and a retention behavior was associated to each swelling category beginning from very high swelling potential to low swelling potential. Finally, a regression analysis was carried out to predict the key geotechnical parameters for the establishment of water retention curves based on other geotechnical properties. The results of the regression analysis showed good agreement with the measured values both in geotechnical properties and retention curves.
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Acknowledgments
This research was funded and supported by the French National Agency of Technological Research (ANRT) as an industrial based R&D program (CIFRE) on drought and climate change effect on natural clayey soils interaction with constructions. The authors would like to thank DETERMINANT Group for their support on collecting experimental data and their collaboration in this research project.
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Assadollahi, H., Nowamooz, H. (2019). Predicting Swelling Potential and Soil-Water Retention Curves of Some Characterized Expansive Clays Based on Geotechnical Properties. In: Hoyos, L., McCartney, J. (eds) Novel Issues on Unsaturated Soil Mechanics and Rock Engineering. GeoMEast 2018. Sustainable Civil Infrastructures. Springer, Cham. https://doi.org/10.1007/978-3-030-01935-8_3
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DOI: https://doi.org/10.1007/978-3-030-01935-8_3
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