Investigation of Sterol Chemistry to Retard the Aging of Asphalt Binders

Published on Oct 17, 2017in Transportation Research Record1.029
· DOI :10.3141/2633-15
Gerald Reinke8
Estimated H-index: 8
,
Gerald H. Reinke9
Estimated H-index: 9
+ 1 AuthorsSeth King2
Estimated H-index: 2
(UWL: University of Wisconsin–La Crosse)
Sources
Abstract
The addition of petroleum-derived oils (aromatic or paraffinic) and bioderived oils (typically low-viscosity, unsaturated hydrocarbons modified to remove acid functionality) to bitumen has become a burgeoning business to facilitate the use of increasing amounts of reclaimed asphalt pavement, reclaimed asphalt shingles (RAS), and combinations. These additives have been marketed as softening agents, to reduce high- and low-temperature performance grades, and as rejuvenators. Given the aging mechanism of bitumen and chemical changes that occur during aging, it is unlikely that any true form of rejuvenation is possible. In this paper data are provided on investigations into the use of a chemical class known as sterols, which can be obtained from seed oils and tall oil to retard the aging of bitumen. Investigations were carried out with RAS, with re-refined engine oil bottoms, and with the accelerated aging of bitumen and bituminous mixtures that contained sterol chemistry. The results demonstrated that, relat...
📖 Papers frequently viewed together
2007
2 Authors (A M Tahir, I A Hamid)
References2
Newest
#1Xinjun Li (Georgetown University)H-Index: 14
#2Nelson Gibson (Federal Highway Administration)H-Index: 20
Last. Terence S. Arnold (Federal Highway Administration)H-Index: 5
view all 4 authors...
This study evaluated a limited number, but well-controlled group of asphalt binders of the same performance grade made with a wide range of recycled engine oil bottoms (REOB) contents; 0%, 2.5%, 6% and 15%. The most practical indicator of the possible presence of a considerable quantity of REOB with measureable changes to the rheological and performance characteristics was the difference between the bending beam rheometer (BBR) m-value temperature grade and the BBR S stiffness temperature grade,...
20 CitationsSource
#1Walaa S Mogawer (University of Massachusetts Boston)H-Index: 4
#1Walaa S. Mogawer (UMass: University of Massachusetts Amherst)H-Index: 19
Last. Brian Hill (UIUC: University of Illinois at Urbana–Champaign)H-Index: 9
view all 6 authors...
This study addresses the New England state transportation agencies concerns associated with the use of Re-refined Engine Oil Bottoms (REOB) in asphalt binders and mixtures. The effect of REOB on the physical and rheological properties of a straight run asphalt binder was investigated after short-term and long-term aging and after extended long-term aging. Also, the effect of REOB modified binders on the performance of asphalt mixtures after short and long-term aging was evaluated in terms of moi...
16 CitationsSource
Cited By5
Newest
#1Bernhard Hofko (TU Wien: Vienna University of Technology)H-Index: 16
#2Daniel Maschauer (TU Wien: Vienna University of Technology)H-Index: 3
Last. Hinrich Grothe (TU Wien: Vienna University of Technology)H-Index: 30
view all 5 authors...
Abstract Bitumen from crude oil refinery is an important construction material as the binding component for asphalt mixes in road construction. Due to its organic composition, it is susceptible to oxidation when being exposed to reactive oxygen species (ROS). Oxidation is the main factor driving long-term ageing of the bitumen, which leads to an increase of brittleness and stiffness at lower temperatures and thus, makes road constructions more prone to cracking. Ageing is therefore a limiting fa...
3 CitationsSource
#1Wen-bo Ma (XTU: Xiangtan University)H-Index: 3
#1Wenbo Ma (XTU: Xiangtan University)H-Index: 30
Last. Cong Hu (XTU: Xiangtan University)H-Index: 2
view all 6 authors...
Abstract Asphalt aging is one of the most severe threats to the asphalt pavement durability and rejuvenation with cooking oil can help to resolve this issue. Currently, the influence of aging/rejuvenation on the bonding performance of asphalt binder has not been fully understood. This study aims to unveil the influence of aging/rejuvenation on the adhesion performance under both micro and macro scale tests. Three type asphalt binders were examined in this study, including the original, aged and ...
28 CitationsSource
#1Yanjun Qiu (Southwest Jiaotong University)H-Index: 11
#2Haibo Ding (Southwest Jiaotong University)H-Index: 7
Last. Haoyuan Luo (Southwest Jiaotong University)H-Index: 3
view all 4 authors...
Physical hardening in asphalt binder is recognized as one of the main factors leading to premature and excessive cracking in cold regions and high-altitude areas. To slow down the physical hardening process in asphalt binder, octyl aniline (OA), which is a commonly available non-ionic dispersant, was added to the asphalt binder. The effectiveness of OA in retarding the physical hardening process of the base asphalt binder was evaluated with an extended bending beam rheometer and critical-crackin...
7 CitationsSource