Influence of compaction on the soil shrinkage and swelling curves

David Encalada*, Abdallah Najdi, Joao Mendes, Pere Prat, Alberto Ledesma

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

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Abstract

The behaviour of soils undergoing deformation due to changes in water content can be described using Soil Shrinkage Curves (SSCs). The SSCs are normally influenced by several factors as the soil’s fabric, different compaction levels, residual void ratio, and the shrinkage limit. In this study, shrinkage curves at different compaction levels were obtained using both wax coating and image analysis as volumetric quantification methods. Both techniques returned consistent results. To fit the obtained experimental data, a single equation is proposed with fitting parameters pertaining to the physical characteristics of the soil samples used. The use of Mercury Intrusion Porosimetry (MIP) is also incorporated to further analyse the structure of the soils being studied. The effect of the drying path on the structure was more apparent in the size range of 100-2000 nm. The effects of compaction on soil structure and shrinkage behaviour were also discussed in the study. The presented work provides valuable insights on the effect of different compaction levels on the soil shrinkage behaviour.
Original languageEnglish
Article number01002
Pages (from-to)1-6
Number of pages6
JournalE3S Web of Conferences
Volume382
DOIs
Publication statusPublished - 24 Apr 2023
EventUNSAT 2023: 8th International Conference on Unsaturated Soils “Towards Unsaturated Soils Engineering” - Milos Conference Centre - George Iliopoulos, Milos, Greece
Duration: 2 May 20235 May 2023
https://www.unsat2023.org/

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