Accuracy and Sensitivity Analyses on the Photogrammetry-Based Deformation Measurement Method


Recently, a novel photogrammetry-based method has been developed for unsaturated soil deformation measurements during triaxial testing. This method provides a simple and cost effective alternative to the conventional double-wall cell method. In this study, a validation test on a saturated sand specimen was conducted to evaluate the accuracy of the newly developed photogrammetry-based method. A sensitivity analysis was also carried out on the impact of the system parameters (i.e., cell wall thickness, refractive indices of water and cell wall) on the overall measurement accuracy. The refractive index of water was found to have the most significant impact on overall measurement accuracy of the photogrammetry-based method.

Meeting Name

2015 International Symposium on Systematic Approaches to Environmental Sustainability in Transportation (2015: Aug. 2-5, Fairbanks, AK)


Civil, Architectural and Environmental Engineering

Keywords and Phrases

Cost effectiveness; Deformation; Materials handling; Photogrammetry; Refractive index; Soil testing; Sustainable development; Transportation; Cell-wall thickness; Cost effective; Deformation measurements; Measurement accuracy; Saturated sand; Triaxial testing; Unsaturated soil; Validation test; Sensitivity analysis

International Standard Book Number (ISBN)


Document Type

Article - Conference proceedings

Document Version


File Type





© 2015 American Society of Civil Engineers (ASCE), All rights reserved.

Publication Date

01 Aug 2015