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Fatigue Life Analysis of Asphalt Mixture Coupling with Loading Intermittent Time

Luan, Li-Qiang / Tian, Xiao-Ge

Repeated loading will produce cumulative damage to asphalt concrete, because of the visco-elastic property of asphalt concrete, a certain degree of self-healing may occurred in case the loads being taken away (the healing effect is more obvious under higher temperature or pressure), this process can be indicated through adding the intermittent time factor to fatigue test of asphalt concrete. This study adds intermittent time factor to asphalt concrete fatigue testing through universal testing machine,, deeply analyzing the effect of intermittent time, confirming that 0.5 second intermittent time is a key time point to fatigue process, fatigue rate under 15 °C is slower than that under 20 °C, and introducing the effect factor to the fatigue equation.

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Fatigue Life Analysis of Asphalt Mixture Coupling with Loading Intermittent Time

Luan, Li-Qiang / Tian, Xiao-Ge

Repeated loading will produce cumulative damage to asphalt concrete, because of the visco-elastic property of asphalt concrete, a certain degree of self-healing may occurred in case the loads being taken away (the healing effect is more obvious under higher temperature or pressure), this process can be indicated through adding the intermittent time factor to fatigue test of asphalt concrete. This study adds intermittent time factor to asphalt concrete fatigue testing through universal testing machine,, deeply analyzing the effect of intermittent time, confirming that 0.5 second intermittent time is a key time point to fatigue process, fatigue rate under 15 °C is slower than that under 20 °C, and introducing the effect factor to the fatigue equation.

Fatigue Life Analysis of Asphalt Mixture Coupling with Loading Intermittent Time

Luan, Li-Qiang / Tian, Xiao-Ge

Repeated loading will produce cumulative damage to asphalt concrete, because of the visco-elastic property of asphalt concrete, a certain degree of self-healing may occurred in case the loads being taken away (the healing effect is more obvious under higher temperature or pressure), this process can be indicated through adding the intermittent time factor to fatigue test of asphalt concrete. This study adds intermittent time factor to asphalt concrete fatigue testing through universal testing machine,, deeply analyzing the effect of intermittent time, confirming that 0.5 second intermittent time is a key time point to fatigue process, fatigue rate under 15 °C is slower than that under 20 °C, and introducing the effect factor to the fatigue equation.

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Title:

Fatigue Life Analysis of Asphalt Mixture Coupling with Loading Intermittent Time

Contributors:

Luan, Li-Qiang (author) / Tian, Xiao-Ge (author)

Published in:

ICCAHE, International Conference on Civil, Architectural and Hydraulic Engineering, 2012 ; 3852-3858

Applied Mechanics and Materials ; 204-208

Publication date:

2012

Size:

7 Seiten

ISSN:

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.204-208.3852

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

Dauerschwingprüfung , Beton , Time-to-Market , Laufzeit , Zeit bis Ausfall , Lebensdauerprüfung , Lebenszyklusanalyse , Hochdruck (Mechanik) , Akkumulation (Schaden) , elastische Eigenschaft

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