2T3C HCA, a new hollow cylinder device using Digital Image Correlation to measure properties of interfaces between asphalt layers. (30th June 2020)

• Record Type: Journal Article
• Authors: Attia, T.; Di Benedetto, H.; Sauzéat, C.; Pouget, S.
• Is Part Of: Construction & building materials. Volume 247(2020)
• Publication Date: 2020-06-30
• Subjects: Pavement layers -- Asphalt concrete -- Interface behavior -- Hollow Cylinder Apparatus (HCA) -- Digital Image Correlation (DIC) -- Experimental results; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2020.118499
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: New device developed to characterize interfaces between pavement layers. Hollow cylinder sample loaded in tension-compression and torsion. Digital Image Correlation analysis: strain in layers and displacement gap at interface. Interfaces exhibit a viscoelastic behavior at small strain amplitudes. Abstract: To improve pavement resistance, asphalt concrete layers are bonded together with a tack coat. A new device has been developed to describe the mechanical behavior of interfaces between asphalt concrete layers. The 2T3C Hollow Cylinder Apparatus (2T3C HCA) can apply torsion and tension-compression to hollow cylinder samples composed of two asphalt concrete layers with a tack coat in between. Normal and shear stresses can be applied independently with any type of loading (monotonic or cyclic). In addition to global measurements, a local optical method, based on Digital image correlation (DIC), is used to observe the deformation of the interface. The first interface characterization results are presented in this paper.