Back pressure saturation techniques for tropical fibrous peat in constant rate of strain consolidation tests
Back pressure saturation techniques for tropical fibrous peat in constant rate of strain consolidation tests
The constant rate of strain (CRS) consolidation test offers several advantages over the conventional consolidation test. However, its application to tropical fibrous peat has been limited due to lack of specific guidelines for conducting CRS tests on this soil type. To address this limitation, the present study aims to describe a method for applying a proper back pressure for tropical fibrous peat specimen in CRS test. Tropical fibrous peat samples were collected from Palangkaraya, Central Kalimantan, Indonesia. The specimens were subjected to back pressures of 50 kPa and 100 kPa and loaded at several strain rates. The resulting effective stress versus normalized void ratio curves were then evaluated. In addition, conventional load increment tests were also conducted to validate the CRS test. The findings demonstrate that applying a back pressure of 100 kPa for saturating tropical fibrous peat specimens produces effective stress versus normalized void ratio curves that exhibit similar shapes across a range of strain rates, and are comparable to those obtained from the conventional load increment test.
Keywords: consolidation, constant rate of strain (CRS) consolidation test, load increment test, tropical fibrous peat
Ayu Prativi; Louis Ge; Y. C. Wang; Yudhi Lastiasih; Noor Endah Mochtar
International Conference on Advances and Innovations in Soft Soil Engineering (ICAISSE2026)
Field and Laboratory Testing
https://doi.org/10.53243/ICAISSE2026-198
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