Journal ArticleDOI
Asphalt Oxidation Mechanisms and the Role of Oxidation Products on Age Hardening Revisited
J. Claine Petersen,Ronald Glaser +1 more
TLDR
In this paper, it was shown that the alcohols, which are formed concurrently with the sulfoxides from the same hydroperoxide precursors as the ketones, have a similar effect on asphalt viscosity increase as does the ketone.Abstract:
The correlation between asphalt viscosity increase on oxidative aging and the carbonyl compounds formed (almost exclusively ketones) has been well established; however, the effect of sulfoxide formation on physical properties during age hardening has received little attention. Evidence is presented in this paper that shows that the alcohols, which are formed concurrently with the sulfoxides from the same hydroperoxide precursors as the ketones, have a similar effect on asphalt viscosity increase as does the ketones. These alcohols are the main contributors to oxidative age hardening of high sulfur asphalts. Analysis of the kinetic data for ketone and sulfoxide formation during asphalt oxidation also provides additional evidence for the validity of the dual asphalt oxidation mechanism previously reported.read more
Citations
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Journal ArticleDOI
Molecular dynamics study of oxidative aging effect on asphalt binder properties
Guangji Xu,Hao Wang +1 more
TL;DR: In this article, the aging effect of asphalt binder was investigated using molecular dynamics simulation in terms of thermodynamic properties such as density, surface energy, viscosity, and cohesive energy density.
Journal ArticleDOI
The mechanisms of hydrated lime modification of asphalt mixtures: a state-of-the-art review
TL;DR: A literature review on the effect of hydrated lime (HL) on asphalt mixtures is presented in this article, where the authors present a combination of four mechanisms, two on the aggregate and two on bitumen.
Journal ArticleDOI
Understanding the bitumen ageing phenomenon: A review
TL;DR: In this paper, an overview of a number of studies related to the ageing process in bitumen, to determine the main component affecting this phenomenon is provided, and a review is presented of the in-laboratory tests used to simulate the different ageing processes (short-term ageing, long-term aging, UV ageing) that occur in the field, along with a description of the techniques currently employed to analyse what happens to the binder after ageing.
Journal ArticleDOI
Field aging effect on chemistry and rheology of asphalt binders and rheological predictions for field aging
TL;DR: In this article, the authors investigate the field aging effect on binder rheology and structure and establish the structure-rheological property relationships with the ultimate goal of predicting rheological properties of field aged binders.
Journal ArticleDOI
FTIR spectral analysis of bituminous binders: reproducibility and impact of ageing temperature
Bernhard Hofko,Laurent Porot,A. Falchetto Cannone,Lily D. Poulikakos,L. Huber,Xiaohu Lu,K. Mollenhauer,Hinrich Grothe +7 more
TL;DR: In this article, the Fourier transform infrared spectroscopy (FTIR) analysis was carried out using an integration method which considers the area below the absorbance spectrum around a band maximum using baseline and tangential approaches.
References
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Reference EntryDOI
Interpretation of Infrared Spectra, A Practical Approach
TL;DR: In this paper, the authors present a first-pass interpretation of the infrared spectrum of a molecule, based on structural features of the molecule, whether they are the backbone of the molecules or the functional groups attached to the molecule.
Journal ArticleDOI
Spectra-Structure Correlations in the Infra-Red Region
TL;DR: In this article, a chart giving probable positions of characteristic infra-red absorption bands for certain molecular groupings is presented, and the reliability of the various correlations is discussed in the text.
Journal Article
A Review of the Fundamentals of Asphalt Oxidation: Chemical, Physicochemical, Physical Property, and Durability Relationships
TL;DR: In this paper, a summary of current physicochemical understanding of the chemistry, kinetics, and mechanisms of asphalt oxidation and its influence on asphalt durability is presented, focusing on how the component fractions of asphalt behave under oxidation, including the effects of the mineral aggregate and metals contained in asphalts.