Effects of wetting and drying cycles on the mechanical behaviour of Lightweight Cemented Soils

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...

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Bibliographic Details
Published in:E3S Web of Conferences 2023-01, Vol.382, p.6008
Main Authors: Sabatino, Filomena, Cuisinier, Olivier, Russo, Giacomo, Vitale, Enza, Nicotera, Marco Valerio
Format: Article
Language:English
Subjects:
Compression
Compression tests
Drying
Durability
Environmental conditions
Environmental degradation
Evolution
Lightweight
Mechanical analysis
Mechanical properties
Mechanical tests
Relative humidity
Soil investigations
Soil mechanics
Soils
Stiffness
Test chambers
Triaxial tests
Wetting
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Summary: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.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/202338206008