Abstract
Fatigue cracking is a major form of distress in asphalt pavements all over the world. Traditionally, fatigue has been analysed using a phenomenological approach, which relates the number of cycles to failure with the imposed strain or stress level. More recently, advanced concepts of continuum damage theory have been applied to investigate damage evolution in asphalt mixes. Another approach relates the damage evolution with the slope of the stiffness reduction curve during uniaxial fatigue tests. This approach is revised in this study to analyse four-point bending (4PB) fatigue tests and to consider non-linear effects over a wider range of imposed strain amplitudes. In this paper, the three approaches are applied to analyse the effect of temperature on the results of 4PB tests performed on hot mix asphalts using different aggregate gradation (dense, open and gap graded) and different asphalt binders (conventional and asphalt rubber). All results clearly showed the dependence of the fatigue parameters on temperature, in that faster damage evolution was observed for mixes at lower temperatures. The results also showed that the asphalt rubber mixtures had lower susceptibility to temperature variations compared to the conventional mixtures.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1-14 |
| Number of pages | 14 |
| Journal | Road Materials and Pavement Design |
| DOIs | |
| State | Accepted/In press - Dec 2 2016 |
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Keywords
- asphalt concrete
- fatigue
- rubber
- temperature
ASJC Scopus subject areas
- Civil and Structural Engineering
Cite this
Effect of temperature on fatigue tests parameters for conventional and asphalt rubber mixes. / de Mello, Luiz Guilherme Rodrigues; de Farias, Márcio Muniz; Kaloush, Kamil.
In: Road Materials and Pavement Design, 02.12.2016, p. 1-14.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of temperature on fatigue tests parameters for conventional and asphalt rubber mixes
AU - de Mello, Luiz Guilherme Rodrigues
AU - de Farias, Márcio Muniz
AU - Kaloush, Kamil
PY - 2016/12/2
Y1 - 2016/12/2
N2 - Fatigue cracking is a major form of distress in asphalt pavements all over the world. Traditionally, fatigue has been analysed using a phenomenological approach, which relates the number of cycles to failure with the imposed strain or stress level. More recently, advanced concepts of continuum damage theory have been applied to investigate damage evolution in asphalt mixes. Another approach relates the damage evolution with the slope of the stiffness reduction curve during uniaxial fatigue tests. This approach is revised in this study to analyse four-point bending (4PB) fatigue tests and to consider non-linear effects over a wider range of imposed strain amplitudes. In this paper, the three approaches are applied to analyse the effect of temperature on the results of 4PB tests performed on hot mix asphalts using different aggregate gradation (dense, open and gap graded) and different asphalt binders (conventional and asphalt rubber). All results clearly showed the dependence of the fatigue parameters on temperature, in that faster damage evolution was observed for mixes at lower temperatures. The results also showed that the asphalt rubber mixtures had lower susceptibility to temperature variations compared to the conventional mixtures.
AB - Fatigue cracking is a major form of distress in asphalt pavements all over the world. Traditionally, fatigue has been analysed using a phenomenological approach, which relates the number of cycles to failure with the imposed strain or stress level. More recently, advanced concepts of continuum damage theory have been applied to investigate damage evolution in asphalt mixes. Another approach relates the damage evolution with the slope of the stiffness reduction curve during uniaxial fatigue tests. This approach is revised in this study to analyse four-point bending (4PB) fatigue tests and to consider non-linear effects over a wider range of imposed strain amplitudes. In this paper, the three approaches are applied to analyse the effect of temperature on the results of 4PB tests performed on hot mix asphalts using different aggregate gradation (dense, open and gap graded) and different asphalt binders (conventional and asphalt rubber). All results clearly showed the dependence of the fatigue parameters on temperature, in that faster damage evolution was observed for mixes at lower temperatures. The results also showed that the asphalt rubber mixtures had lower susceptibility to temperature variations compared to the conventional mixtures.
KW - asphalt concrete
KW - fatigue
KW - rubber
KW - temperature
UR - http://www.scopus.com/inward/record.url?scp=85002376171&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85002376171&partnerID=8YFLogxK
U2 - 10.1080/14680629.2016.1261728
DO - 10.1080/14680629.2016.1261728
M3 - Article
SP - 1
EP - 14
JO - Road Materials and Pavement Design
JF - Road Materials and Pavement Design
SN - 1468-0629
ER -