Viscous Flow Activation Energy and Short-Term Aging Resistance of SBS-Modified Asphalt Enhanced by PPA Oil-Grinding Activated MoS2
Shun Chen1,2,3, Yingjie Wang1, Xingyang He1,2,3,*, Ying Su1,2,3, Yingyuan Pan1, Yimin Cao1, Wentian Wang1, Chao Yang1,2,3, Bo Jiang1,2,3, Shaolin Zhang4
1 School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan, 430068, China
2 Building Waterproof Engineering and Technology Research Center of Hubei Province, Hubei University of Technology, Wuhan, 430068, China
3 Key Laboratory of Intelligent Health Perception and Ecological Restoration of Rivers and Lakes, Ministry of Education, Hubei University of Technology, Wuhan, 430068, China
4 China Construction Third Bureau First Engineering Co., Ltd., China
* Corresponding Author: Xingyang He. Email: 
(This article belongs to the Special Issue: Advances in Solid Waste Processing and Recycling Technologies for Civil Engineering Materials)
Fluid Dynamics & Materials Processing https://doi.org/10.32604/fdmp.2024.055697
Received 04 June 2024; Accepted 12 October 2024; Published online 04 November 2024
Abstract
Styrene-butadiene-styrene (SBS) modified asphalt (SA) has long found effective applications in road construction materials. When combined with fillers, SBS-modified asphalt has demonstrated promising resistance to fatigue cracking caused by temperature fluctuations and aging. In this study, molybdenum disulfide (MoS
2) and polyphosphoric acid (PPA) were ground in naphthenic oil (NO) and subjected to mechanical activation to create PPA-modified MoS
2, referred to as OMS-PPA. By blending various ratios of OMS-PPA with SBS-modified asphalt, composite-modified asphalts were successfully developed to enhance their overall properties. To assess the mechanical characteristics and stability of these modified asphalts, various methods were employed, including penetration factor, flow activation energy, fluorescence microscopy, and dynamic shear rheology. Additionally, the short-term aging performance was evaluated using Fourier transform infrared (FTIR) spectroscopy and nanoindentation tests. The results revealed a 3.7% decrease in the penetration-temperature coefficient for SA-OMS compared to SA, while 1-SA-OMS-PPA showed an even greater reduction of 7.1%. Furthermore, after short-term aging, carboxyl group generation in SA increased by 5.93%, while SA-OMS exhibited a smaller rise of 1.36%, and 1-SA-OMS-PPA saw an increase of just 0.93%. The study also highlighted significant improvements in the hardness of these materials. The hardness change ratio for SA-OMS decreased by 43.08%, while the ratio for 1-SA-OMS-PPA saw a notable reduction of 65.16% compared to unmodified SA. These findings suggest that OMS-PPA contributed to improvements in temperature sensitivity, particle dispersibility, and resistance to short-term aging in asphalts. The results hold significant promise for the future development of advanced asphalt-based materials with potential high-value applications in flexible pavements for highways.
Keywords
Composite-modified asphalt; grinding; viscous flow activation energy; short-term aging; collaborated
Open Access
Login
Register
Submit a Paper
Propose a Special lssue
Download PDF
Downloads
Citation Tools
