A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fatigue–healing performance evaluation of asphalt mixture using four-point bending test
The design of asphalt pavements is mostly based on fatigue performance. However, the fatigue–healing characteristics of asphalt pavements can repair pavement cracks and prolong fatigue life, which are not considered in the conservative traditional pavement designs. In this study, a four-point bending fatigue–healing–fatigue test and a single-factor comparative analysis method are used to investigate the fatigue–healing performance of asphalt mixtures. The effects of healing temperature, healing time, degree of damage, and loading strain on the fatigue–healing characteristics of unmodified and styrene–butadiene–styrene (SBS)-modified asphalt mixtures are investigated. The degree of influence of each factor is evaluated using the grey correlation method. Results show that the fatigue-life healing index of the asphalt mixtures is proportional to the healing time and inversely proportional to the degree of damage and the loading strain. The healing indices of unmodified and SBS-modified asphalt mixtures reached their maximum values at healing temperatures of 50 °C and 60 °C, respectively. All the factors have significant effects on the fatigue–healing performance; however, the healing temperature had the greatest effect.
Fatigue–healing performance evaluation of asphalt mixture using four-point bending test
The design of asphalt pavements is mostly based on fatigue performance. However, the fatigue–healing characteristics of asphalt pavements can repair pavement cracks and prolong fatigue life, which are not considered in the conservative traditional pavement designs. In this study, a four-point bending fatigue–healing–fatigue test and a single-factor comparative analysis method are used to investigate the fatigue–healing performance of asphalt mixtures. The effects of healing temperature, healing time, degree of damage, and loading strain on the fatigue–healing characteristics of unmodified and styrene–butadiene–styrene (SBS)-modified asphalt mixtures are investigated. The degree of influence of each factor is evaluated using the grey correlation method. Results show that the fatigue-life healing index of the asphalt mixtures is proportional to the healing time and inversely proportional to the degree of damage and the loading strain. The healing indices of unmodified and SBS-modified asphalt mixtures reached their maximum values at healing temperatures of 50 °C and 60 °C, respectively. All the factors have significant effects on the fatigue–healing performance; however, the healing temperature had the greatest effect.
Fatigue–healing performance evaluation of asphalt mixture using four-point bending test
Mater Struct
Xiang, Hao (author) / Zhang, Wenwu (author) / Liu, Peng (author) / He, Zhaoyi (author)
2020-04-20
Article (Journal)
Electronic Resource
English
Fatigue–healing performance evaluation of asphalt mixture using four-point bending test
| Online Contents | 2020
| British Library Online Contents | 2012