Modelling of the effect of scale on the compressibility parameters of fine-grained soils

Rosine Larissa, TN; Toma-Sabbagh, TM; Uzomah, VC

Abstract

The effect of sample scale represents a challenge when obtaining engineering parameters in the laboratory compared to those obtained in the field. This study aimed at contributing to existing knowledge numerically using the finite element software PLAXIS 2D. The investigations were analysed in terms of height scale (HS) and diameter scale (DS) through a series of laboratory tests. Its effect on compressibility parameters such as coefficient of consolidation (cv) was noted experimentally and showed that the sample scale greatly influences soil parameters most particularly at DS. The soil behaviour was found to be dependent on both DS and HS with a correlation factor of 0.650 and 0.062, respectively. The experimental data were validated in PLAXIS and a new proposed model was developed in PLAXIS 2D under the DS. The new proposed model developed was found to show no significant difference with the laboratory data.

Citation

Rosine Larissa, T., Toma-Sabbagh, T., & Uzomah, V. (2019). Modelling of the effect of scale on the compressibility parameters of fine-grained soils. Geomechanics and Geoengineering, 14(4), 262-270. https://doi.org/10.1080/17486025.2019.1597282

• Journal Article Type: Article
• Acceptance Date: Mar 8, 2019
• Online Publication Date: Apr 11, 2019
• Publication Date: Apr 11, 2019
• Deposit Date: Apr 24, 2019
• Publicly Available Date: Apr 11, 2020
• Journal: Geomechanics and Geoengineering
• Print ISSN: 1748-6025
• Publisher: Taylor and Francis
• Volume: 14
• Issue: 4
• Pages: 262-270
• DOI: https://doi.org/10.1080/17486025.2019.1597282
• Publisher URL: https://doi.org/10.1080/17486025.2019.1597282
• Related Public URLs: https://www.tandfonline.com/toc/tgeo20/current