| Issue |
E3S Web of Conf.
Volume 382, 2023
8th International Conference on Unsaturated Soils (UNSAT 2023)
|
|
|---|---|---|
| Article Number | 06008 | |
| Number of page(s) | 5 | |
| Section | Understanding the Effect of Climate Change on the Environment and Infrastructure Through Unsaturated Soil Behavior | |
| DOI | https://doi.org/10.1051/e3sconf/202338206008 | |
| Published online | 24 April 2023 | |
Effects of wetting and drying cycles on the mechanical behaviour of Lightweight Cemented Soils
1 University of Naples Federico II, Department of Civil, Building and Environmental Engineering, Italy
2 LEMTA, Université de Lorraine, CNRS, 54505 Vandoeuvre-lès-Nancy cedex, France
3 University of Naples Federico II, Department of Earth, Environmental and Resource Sciences, Italy
* Corresponding author: filomena.sabatino@unina.it
An experimental investigation on the durability of Lightweight Cemented Soils (LWCS) after wetting and drying cycles was developed, focusing on the evolution of their mechanical response. Wetting and drying cycles were performed in climatic chamber to test their mechanical performance as function of number of cycles and the environmental conditions (50% and 90% of Relative Humidity). Unconfined compression tests and triaxial tests were performed on treated specimens after cycles in dry state. Suction of LWCS samples was measured after mechanical tests. Test results show that the wetting-drying cycles and the variations of suction are responsible for the evolution of LWCS mechanical behaviour. Moreover, strength and stiffness of the treated samples are related to the suction level induced by environmental conditions. The degradation of mechanical behaviour is linked to the number of cycles and to the amplitude of suction variation induced, being the latter responsible for mechanical cement bonding destructuration.
© The Authors, published by EDP Sciences, 2023
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