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The Effects of Bituminous Binder on the Performance of Gussasphalt Concrete for Bridge Deck Pavement

1
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China
2
Petro China Fuel Oil Company Limited Research Institute, Beijing 100089, China
3
Petro China Fuel Oil Company Limited, Beijing 100089, China
4
Highway Bureau of Transport of Shandong Province, Jinan 250000, China
*
Authors to whom correspondence should be addressed.
Materials 2020, 13(2), 364; https://doi.org/10.3390/ma13020364
Received: 4 December 2019 / Revised: 9 January 2020 / Accepted: 10 January 2020 / Published: 13 January 2020
(This article belongs to the Section Construction and Building Materials)
As bituminous binders greatly influence the engineering performance of gussasphalt concrete for bridge deck pavement, selecting appropriate bitumen is a critical procedure for mixture design. In this study, five different combinations of bituminous binder for potential use in the “Hong Kong–Zhuhai–Macao Bridge” project were prepared and tested. To meet the strict requirements of quality control, a new Guss-Mastic Asphalt (GMA) system was developed. Three key indices, Lueer fluidity, impact toughness, and dynamic stability, were used for GMA design and construction quality control. The test results show that the fluidity of the GMA mixtures was affected by the shear thinning phenomenon. After mixing for three hours, the Lueer value of all GMA mixtures met the requirements of pouring construction. Moreover, it was found that the influence of mixing time on GMA with styrene butadiene styrene (SBS) modified bitumen was different to other prepared mixtures. This difference is ascribed to the degradation of SBS during the blending process at an elevated temperature. Finally, the blended bitumen (30% Pen60/70 + 70% Trinidad lake asphalt (TLA)) was applied to the project of the Hong Kong–Zhuhai–Macao Bridge. View Full-Text
Keywords: bitumen; gussasphalt concrete; deck pavement; performance; GMA; aging; Hong Kong–Zhuhai–Macao Bridge bitumen; gussasphalt concrete; deck pavement; performance; GMA; aging; Hong Kong–Zhuhai–Macao Bridge
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Zou, G.; Xu, X.; Li, J.; Yu, H.; Wang, C.; Sun, J. The Effects of Bituminous Binder on the Performance of Gussasphalt Concrete for Bridge Deck Pavement. Materials 2020, 13, 364.

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