A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rheological and Structural Evolution of Rubberized Asphalts under Weathering
AbstractRubberized asphalt has been widely used for extending the service life of pavement. Understanding the weathering mechanism of rubberized asphalt is useful for selecting appropriate rubberized asphalt. This paper examines the weathering process of two typical rubberized asphalts composed of crumb rubber modified asphalt (CRMA) and terminal blend rubber asphalt (TB) by characterizing the rheological and structural evolution of the aged asphalt. Dynamic shear rheometer analysis, infrared spectroscopy, and gel permeation chromatography are used to analyze this evolution. The results show that significant changes occur in the chemical structures and rheological properties of the two rubberized asphalts throughout the weathering process. Although the stiffness of CRMA and TB obviously increases during weathering, their increasing trends are distinct from each other. The chemical evolutions of CRMA and TB during the weathering process differ significantly in terms of variations in molecular weight and carbonyl index.
Rheological and Structural Evolution of Rubberized Asphalts under Weathering
AbstractRubberized asphalt has been widely used for extending the service life of pavement. Understanding the weathering mechanism of rubberized asphalt is useful for selecting appropriate rubberized asphalt. This paper examines the weathering process of two typical rubberized asphalts composed of crumb rubber modified asphalt (CRMA) and terminal blend rubber asphalt (TB) by characterizing the rheological and structural evolution of the aged asphalt. Dynamic shear rheometer analysis, infrared spectroscopy, and gel permeation chromatography are used to analyze this evolution. The results show that significant changes occur in the chemical structures and rheological properties of the two rubberized asphalts throughout the weathering process. Although the stiffness of CRMA and TB obviously increases during weathering, their increasing trends are distinct from each other. The chemical evolutions of CRMA and TB during the weathering process differ significantly in terms of variations in molecular weight and carbonyl index.
Rheological and Structural Evolution of Rubberized Asphalts under Weathering
Wang, Qiang (author) / Wang, Shifeng / Zhao, Xinyu
2017
Article (Journal)
English
BKL:
56.45
Baustoffkunde
Local classification TIB:
535/6520/6525/xxxx
Rheological and Structural Evolution of Rubberized Asphalts under Weathering
| British Library Online Contents | 2017
New concepts for rubberized asphalts
| Engineering Index Backfile | 1955
Rheological Response of Asphalts
| NTIS | 1972
Weathering tests on filled coating asphalts
| Engineering Index Backfile | 1938