Assessment of pavement deflection under vehicle loads using a 3D-DIC system in the field

Abstract

This study aims to introduce the use of 3D-digital image correlation (DIC) to the in situ testing of pavements and to support the development of techniques for a rapid evaluation of the conservation status of existing roads. Little research was found on this topic. The passage of a car wheel on an asphalt pavement was adopted as a case study. The DIC measurements were compared to those gathered by contact sensors. From a qualitative point of view, the DIC measurements captured the realistic shape of a deflection basin. From a quantitative point of view, the deflection values provided by the DIC system had a mean error of 0.015 mm and a standard deviation of 0.011 mm. At the moment of highest load, these errors had a mean value and standard deviation of − 0.016 mm and 0.021 mm, respectively. Thus, to improve the accuracy of the system, we propose modifying the camera support, speckle pattern, and control of natural light.

Perancangan Awal Aplikasi Uji Proof Rooling Mengukur Lendutan Lapis Fondasi Agregat Kelas a Menggunakan Kamera

“…Studi literatur mencakup ulasan tentang penggunaan kamera sebagai alat untuk mengukur lendutan. Peneliti akan mempelajari bagaimana kamera dapat diaplikasikan secara efektif dalam konteks pengukuran lendutan pada lapis fondasi agregat kelas A (Núñez-Temes et al, 2022). Informasi ini akan membantu dalam menentukan kecocokan teknologi kamera untuk aplikasi uji proof rolling yang dirancang.…”