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Open AccessArticle

Examination of Poly (Styrene-Butadiene-Styrene)-Modified Asphalt Performance in Bonding Modified Aggregates Using Parallel Plates Method

1
State Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science and Technology, Changsha 410114, China
2
School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
*
Authors to whom correspondence should be addressed.
Polymers 2019, 11(12), 2100; https://doi.org/10.3390/polym11122100
Received: 5 June 2019 / Revised: 1 December 2019 / Accepted: 10 December 2019 / Published: 14 December 2019
Although asphalt-aggregate bonding provides contacting strength for hot mix asphalt (HMA), it is still ignorant in dynamic shear test, due to the only use of metal parallel plate. Modified parallel plates cored from different types of aggregate were provided to simulate aggregate-asphalt-aggregate (AAA) sandwich in HMA, aiming at the comprehensive interpretation on bonding’s influence. This study began with an experimental design, aggregate plates, and joint clamps were processed to be installed into the rheometer. Aggregate type and loading conditions were set as essential variables. Subsequently, microscopic tests were utilized to obtain chemical components of aggregate, micro morphology of interface, and roughness of plates. The shearing tests for poly (styrene-butadiene-styrene)-modified asphalt were conducted in bonding with aggregate plates. Meanwhile, contrasting groups adopting metal plates followed the same experimental procedures. The results indicate that the influence of aggregate type on binder’s rheological characteristics is dependent on the experimental variables, and microscopic characteristics and component differences should be taken into consideration when selecting aggregates in designing asphalt mixtures. View Full-Text
Keywords: rheology; microscopic characteristic; poly (styrene-butadiene-styrene)-modified asphalt; modified clamps; adhesion rheology; microscopic characteristic; poly (styrene-butadiene-styrene)-modified asphalt; modified clamps; adhesion
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MDPI and ACS Style

Gong, X.; Dong, Z.; Liu, Z.; Yu, H.; Hu, K. Examination of Poly (Styrene-Butadiene-Styrene)-Modified Asphalt Performance in Bonding Modified Aggregates Using Parallel Plates Method. Polymers 2019, 11, 2100.

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