Modelling of rheological and chemical properties of asphalt binder considering SARA fraction
TL;DR: In this article, a column chromatography was applied to collect sufficient SARA (Saturates, Aromatics, Resins and Asphaltenes), and the Dynamic Shear Rheometer (DSR) test was used to develop the viscoelastic master curves for binders and their subsets.
About: This article is published in Fuel.The article was published on 2019-02-15. It has received 117 citations till now. The article focuses on the topics: Dynamic shear rheometer & Asphaltene.
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TL;DR: In this article, various long-term aged (LTA) binders from the same base bitumen were investigated with dynamic shear rheometer (DSR) and Fourier-Transformation Infrared (FTIR) spectroscopy.
70 citations
TL;DR: In this paper, the authors explored the high and low temperature performance grades as well as energy saving, greenhouse gas (GHG) emission reduction, and cost saving of reclaimed asphalt binders incorporated into the commonly used base binders.
59 citations
TL;DR: In this article, the authors investigated the performance of high sulfur-content heavy oil at sub-critical, near-critical and supercritical water (SCW) conditions, and showed that a viscosity reduction from 2073 to 1758mPa was achieved with a slight removal of sulfur (mainly sulfur) and the generation of a small amount of light and non-condensable hydrocarbons in gas phase (C1−C4, isoalkanes and alkenes, H2S, CO2 and H2, etc.).
59 citations
TL;DR: In this paper, an oil-soluble transition metal-based catalysts (Fe, Co, Ni) are proposed for catalyzing aquathermolysis reactions in steam injection process for heavy oil production to achieve in-situ upgrading of heavy oil.
54 citations
Cites methods from "Modelling of rheological and chemic..."
...SARA fractions and viscosity analysis Saturated hydrocarbons, aromatic compounds, resins and asphaltenes (SARA fractions) of the heavy oil before and after upgrading was analyzed by ASTM D 4124 method [38]....
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TL;DR: In this paper, a quantitative AFM-IR analysis method based on Fourier transform infrared (FT-IR) spectroscopy was proposed to collect topography maps, phase maps, functional group distribution maps, and infrared spectra of base bitumen samples before and after aging.
46 citations
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TL;DR: A general picture of bitumen structure is shown to emerge and it shows that a simple solvation parameter allows quantifying the effect of the asphaltenes on the rheological properties ofbitumen.
1,236 citations
572 citations
TL;DR: In this article, the effect of ageing on bitumen chemistry and rheology was studied, where seven bitumens were aged according to the thin film oven test and the rolling thin-film oven test (RTFOT) and the binders were characterised using infrared spectroscopy, chromatography and dynamic mechanical analysis.
549 citations
TL;DR: In this article, a network of asphaltene molecules with regard to asphalt gel was revealed by using atomic force microscopy (AFM) and SEM observations with very low resolution.
Abstract: Observations made using AFM and SEM have been combined in order to study the structure of asphalts. Fluorescence microscopy was used to aid in understanding the structural changes occurring when polymer is added to the asphalts. With the atomic force microscope we are able to study the structure of the asphalts without any pre-preparation. Despite very low resolution, our study reveal ed a network of asphaltene molecules with regard to asphalt gel. The same result is obtained by SEM observation but with a much better resolution. SEM observation, however, needs an adequate preparation method. In the presence of polymer we observed a rearrangement of the initial asphaltene association which leads to the assumption that polymer can aggregate the asphaltene phase.
362 citations