Characterization of the bond between asphalt layers and glass grid layer with help of a wedge splitting test

Abstract

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Interlaminar Mode-I Fracture Characterization Underwater of Reinforced Bituminous Specimens

“…In conjunction with four-point bending fatigue tests and accelerated loading tests (APT) conducted on several pavement structures throughout the course of the French SolDuGri project (ANR-14-CE22-0019) [10], the WST has been developed specifically for specimens extracted from road sections [5][6]. This approach has led to experimentally characterizing the Interlaminar Mode-I Fracture of the interlayer bond of pavement reinforced with fiberglass grids.…”

“…Extracted from in situ bituminous sections and in accordance with a RILEM recommendation [4], a large number of specimens differentiated by both type and testing conditions were prepared and assessed [5]. Specimen dimensions were chosen so that the interface dimensions contained a minimum of 3x3 grid meshes [6]. This project's two selected glass fiber grids, denoted G3 and G4 for P6 and P7 specimen types respectively, have a mesh size of .…”

“…Along with rolling loads and temperature variations, the presence of water near the interface must be considered in studying debonding mechanisms [4]. To better understand the interlaminar mode I fracture behavior of pavements, Wedge Splitting Tests (WST) have been developed, whether underwater or not, for specimens extracted directly from road sections [5][6]. These tests have displayed rather interesting results, in comparison with results obtained on actual pavement test sections.…”

Comparative analysis of the response of the road structure with full/partial interlayer connection to traffic action

“…The above-mentioned issues are not the only causes that can lead to partial adhesion between layers of the road structure, many other factors (individually or in combination) could contribute to this phenomenon [8].…”