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Article

Evaluation of Adhesive Properties of Different Mineral Compositions in Asphalt Mixtures with Experimental and Molecular Dynamics Analyses

by
Fei Pan
1,
Zepeng Fan
2,*,
Mrinali Rochlani
3,
Gustavo Canon Falla
3,
Sabine Leischner
3,
Markus Oeser
1,4,
Huayang Yu
5,6 and
Pengfei Liu
1,*
1
Institute of Highway Engineering, RWTH Aachen University, Mies-van-der-Rohe-Str. 1, 52074 Aachen, Germany
2
School of Transportation Science and Engineeing, Harbin Institute of Technology, Harbin 150090, China
3
Institute for Urban and Pavement Engineering, TU Dresden, Georg-Schumann-Straße 7, 01187 Dresden, Germany
4
Federal Highway Research Institute (BASt), Brüderstr. 53, 51427 Bergisch Gladbach, Germany
5
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China
6
Guangdong Provincial Key Laboratory of Modern Civil Engineering Technology, Guangzhou 510641, China
*
Authors to whom correspondence should be addressed.
Buildings 2023, 13(5), 1207; https://doi.org/10.3390/buildings13051207
Submission received: 11 April 2023 / Revised: 25 April 2023 / Accepted: 29 April 2023 / Published: 2 May 2023
(This article belongs to the Section Building Materials, and Repair & Renovation)
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Abstract

The adhesion between bitumen and mineral composition plays a vital role for the performance of asphalt mixtures. This study compares the adhesion of limestone, dolomite, and granodiorite to bitumen and evaluates the effects of different mineral components on adhesion. Three kinds of aggregates were tested through rolling-bottle tests. Afterwards, the respective fillers were integrated into asphalt mastic in a 1.6:1 mass ratio with bitumen and were subjected to frequency scan tests separately. A modified Luis Ibrarra-A model, K. Ziegel-B model, and K-B-G model were used to evaluate the bitumen–filler interactions based on the rheology of the asphalt mastic. In addition, the interface behavior between eight mineral components from these fillers/aggregates and bitumen were investigated by molecular dynamics (MD) simulations. The work of the adhesion and molecule concentration profiles were obtained from MD simulations. The results showed that the limestone and dolomite had better interfacial adhesion to the bitumen than the granodiorite. The calcium oxide and titanium oxide had the highest potential adsorption effect on the bitumen. Moreover, the high calcium oxide content contributed to better bitumen adhesion with the limestone and dolomite than with the granodiorite, which was further confirmed by additional molecule concentration profile analysis. This research contributes to the in-depth understanding of the effect of different chemical properties on the performance of asphalt mastic and the selection of suitable mineral components to improve the bitumen–filler/aggregate interface and asphalt mixture performance in general.
Keywords: interfacial behavior; mineral components; molecular dynamics; interaction model; rheological behavior interfacial behavior; mineral components; molecular dynamics; interaction model; rheological behavior

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MDPI and ACS Style

Pan, F.; Fan, Z.; Rochlani, M.; Falla, G.C.; Leischner, S.; Oeser, M.; Yu, H.; Liu, P. Evaluation of Adhesive Properties of Different Mineral Compositions in Asphalt Mixtures with Experimental and Molecular Dynamics Analyses. Buildings 2023, 13, 1207. https://doi.org/10.3390/buildings13051207

AMA Style

Pan F, Fan Z, Rochlani M, Falla GC, Leischner S, Oeser M, Yu H, Liu P. Evaluation of Adhesive Properties of Different Mineral Compositions in Asphalt Mixtures with Experimental and Molecular Dynamics Analyses. Buildings. 2023; 13(5):1207. https://doi.org/10.3390/buildings13051207

Chicago/Turabian Style

Pan, Fei, Zepeng Fan, Mrinali Rochlani, Gustavo Canon Falla, Sabine Leischner, Markus Oeser, Huayang Yu, and Pengfei Liu. 2023. "Evaluation of Adhesive Properties of Different Mineral Compositions in Asphalt Mixtures with Experimental and Molecular Dynamics Analyses" Buildings 13, no. 5: 1207. https://doi.org/10.3390/buildings13051207

APA Style

Pan, F., Fan, Z., Rochlani, M., Falla, G. C., Leischner, S., Oeser, M., Yu, H., & Liu, P. (2023). Evaluation of Adhesive Properties of Different Mineral Compositions in Asphalt Mixtures with Experimental and Molecular Dynamics Analyses. Buildings, 13(5), 1207. https://doi.org/10.3390/buildings13051207

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