Recent Advances in Volume Measurements of Soil Specimen during Triaxial Testing
Triaxial tests have been extensively used to characterize soil behavior. During triaxial testing, the soil deformation needs to be measured. However, measurement of deformation in unsaturated soils is considered a great challenge for researchers due to the existence of air phase. Over the years, a great deal of research effort has been dedicated to developing methods to measure soil deformation during triaxial testing. Among these methods, image-based methods receive increasing attention. This state-of-the-art report presented herein aims at documenting advancement in the image-based methods for unsaturated soil deformation measurement. The documentation presented this study includes the image analysis, X-ray CT, image correlation, multi-camera photogrammetry, and the photogrammetry-based methods. The pros and cons of each method are discussed and a comprehensive comparison between these methods is provided. Concluding remarks are included in the last section of the report.
X. Zhang et al., "Recent Advances in Volume Measurements of Soil Specimen during Triaxial Testing," Proceedings of the 7th Asia-Pacific Conference on Unsaturated Soils (2019, Nagoya, Japan), pp. 31 - 37, Japanese Geotechnical Society, Aug 2019.
The definitive version is available at https://doi.org/10.3208/jgssp.v07.004
7th Asia-Pacific Conference on Unsaturated Soils, AP-UNSAT 2019 (2019: Aug. 23-25, Nagoya, Japan)
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Image-based method; Photogrammetry; Soil deformation; Triaxial testing
Article - Conference proceedings
© 2019 Japanese Geotechnical Society, All rights reserved.
25 Aug 2019