Print Email Facebook Twitter Analysis of the cohesion/adhesion proportion around bitumen-mineral failure interface under tensile loading Title Analysis of the cohesion/adhesion proportion around bitumen-mineral failure interface under tensile loading Author Shi, Baocun (Hohai University) Liu, Quan (Hohai University) Gao, Y. (TU Delft Pavement Engineering) Wu, Jiantao (Hohai University) Chen, Jingya (Hohai University) Date 2023 Abstract The occurrence of cohesive/adhesive hybrid failure at the bitumen-aggregate interface is widely acknowledged, however, the quantitative evaluation of the cohesion/adhesion proportion is relatively weak. This study explored cohesive/adhesive hybrid failure and provided a quantitative analysis of the proportion between cohesion and adhesion. For this reason, this study considered a variety of experimental factors that included temperature (5 °C, 15 °C, and 25 °C), mineral morphology (three mineral types and three surface textures), and measured film thickness (varying from 10 μm to 900 μm). By performing the bonding strength test, the strength was recorded and interface failure was accordingly captured. The results indicated that the cohesion/adhesion proportion varied significantly with the temperature, mineral morphology, and measured film thickness. In addition, it was found that bonding strength decreased with the increase in the film thickness and temperature, which can be well explained by variation in adhesion/cohesion proportion. Complete cohesive failure was observed when the film thickness increased beyond a critical value at a relatively high temperature. An additional noteworthy finding was the resemblance of a lunar crater for the failure interface at high temperatures, signifying the heterogeneous composition of the bituminous binder around the interface. Subject Adhesion/cohesion proportionBitumen-aggregate interfaceFailure modeFilm thicknessMineral surface morphology To reference this document use: http://resolver.tudelft.nl/uuid:78e9a0c9-5ff6-403a-874a-2912bef64569 DOI https://doi.org/10.1016/j.conbuildmat.2023.132555 Embargo date 2024-01-22 ISSN 0950-0618 Source Construction and Building Materials, 399 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Baocun Shi, Quan Liu, Y. Gao, Jiantao Wu, Jingya Chen Files PDF 1_s2.0_S0950061823022717_main.pdf 11.15 MB Close viewer /islandora/object/uuid:78e9a0c9-5ff6-403a-874a-2912bef64569/datastream/OBJ/view