Relaxation spectra of asphalt binders and the Christensen–Anderson rheological model
| Autor: | Geoffrey M. Rowe, Donald W Christensen Jr, David A. Anderson |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Mathematical model Logistic distribution 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Spectral line 0201 civil engineering Fatigue resistance Rheology Asphalt Skewness 021105 building & construction Relaxation (physics) Statistical physics Civil and Structural Engineering |
| Zdroj: | Road Materials and Pavement Design. 18:382-403 |
| ISSN: | 2164-7402 1468-0629 |
| DOI: | 10.1080/14680629.2016.1267448 |
| Popis: | The development of the well-known Christensen–Anderson (CA) rheological model grew out of attempts to model the relaxation spectra of asphalt binders using a skewed logistic distribution function. For this reason, there exist very strong relationships between the CA model parameters and the characteristics of relaxation spectra for asphalt binders. This paper presents a recently developed equation that allows direct and accurate calculation of the relaxation spectra from CA model parameters, demonstrating the nature of this relationship. Of the CA model/spectrum parameters, the most important in terms of describing overall behaviour and potential performance is the R-value, which describes the shape and skewness of the spectrum. This parameter and other similar rheological parameters have been linked to various important aspects of asphalt binder behaviour, including fatigue resistance, chemical composition and degree of oxidative ageing. This makes the parameter R a potentially useful parameter for inclu... |
| Databáze: | OpenAIRE |
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