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

ABSTRACT: 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.

SUBMITTER: Zou G

PROVIDER: S-EPMC7013826 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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Project description:In today's world where the effects of global warming are intense, alternative approaches for a sustainable concrete sector are rapidly increasing. The partial replacement of waste materials, such as bottom ash and marble powder to cement, leads to a significant reduction in carbon dioxide emissions. The expected quality of materials to be used for the concrete sector is very important in terms of building safety. New building materials and binder materials offered as an alternative are often unable to meet this requirement due to existing standards. Therefore, the existing standards should be reviewed and alternative construction materials should be provided for the sector. This dataset would be beneficial for other researchers who design sustainable concrete. Although the data presented herein deals with pure paste, the authors believe that the data can be used for mix design in the concrete construction sector to reduce the cement amount for various civil engineering projects, from low to medium strength concrete applications. The data compiled herein were obtained from the fresh and hardened properties at 7, 28 and 56 days. Physico-mechanical characterization and sulphate resistance were analyzed for laboratory produced marble paste composites. The dataset described here is the pilot study of the "High-volume marble substitution in cement-paste: towards a better sustainability" [1] and "Novel coal bottom ash waste composites for sustainable construction" [2].

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