A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Large Amplitude Oscillatory Shear testing for the performance grading of straight and polymer modified asphalt binders
Highlights LAOS tests can be conducted on small quantities of recovered asphalt binder. LAOS testing increases automation and therefore yields precise results. LAOS results correlate with basic rheological DSR and failure DENT properties.
Abstract This paper discusses the accuracy of performance grading through Large Amplitude Oscillatory Shear (LAOS) testing of asphalt binders, in comparison to results obtained by well-validated Double-Edge-Notched Tension (DENT) tests. The LAOS test is proposed as both a qualitative and quantitative method of analysing binder performance through Lissajous-Bowditch plots, and repeatable correlations between peak strain energy dissipation and CTOD values. The correlation between LAOS and Critical Crack Tip Opening Displacement (CTOD) in the DENT test is found to be strong. The findings of this preliminary study on a limited set of binders suggest that LAOS tests may provide practical measures of performance in high strain failure.
Large Amplitude Oscillatory Shear testing for the performance grading of straight and polymer modified asphalt binders
Highlights LAOS tests can be conducted on small quantities of recovered asphalt binder. LAOS testing increases automation and therefore yields precise results. LAOS results correlate with basic rheological DSR and failure DENT properties.
Abstract This paper discusses the accuracy of performance grading through Large Amplitude Oscillatory Shear (LAOS) testing of asphalt binders, in comparison to results obtained by well-validated Double-Edge-Notched Tension (DENT) tests. The LAOS test is proposed as both a qualitative and quantitative method of analysing binder performance through Lissajous-Bowditch plots, and repeatable correlations between peak strain energy dissipation and CTOD values. The correlation between LAOS and Critical Crack Tip Opening Displacement (CTOD) in the DENT test is found to be strong. The findings of this preliminary study on a limited set of binders suggest that LAOS tests may provide practical measures of performance in high strain failure.
Large Amplitude Oscillatory Shear testing for the performance grading of straight and polymer modified asphalt binders
de Loë, Lily C. (author) / Hesp, Simon A.M. (author)
2021-01-14
Article (Journal)
Electronic Resource
English
AASHTO , American Association of State Highway and Transportation Officials , CTOD , Crack Tip Opening Displacement , DENT , Double-Edge-Notched Tension test , DSR , Dynamic Shear Rheometer , FHWA ALF , Federal Highway Administration’s Accelerated Loading Facility , LAOS , Large Amplitude Oscillatory Shear test , LVE , Linear Viscoelastic , PAV , Pressure Aging Vessel , PG , Performance Grade , RTFO , Rolling Thin Film Oven , SHRP , Strategic Highway Research Program , Asphalt binder , Performance grading , Double-Edge-Notched Tension (DENT) , Critical Crack Tip Opening Displacement (CTOD) , Large-Amplitude Oscillatory Shear (LAOS) , Fatigue cracking , Thermal cracking
Large amplitude oscillatory shear of modified asphalt binder
| TIBKAT | 2021
Polymer modified asphalt binders
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