Fatigue behaviour of dry or partially saturated hot mix asphalt (HMA)

This paper analyses the water, the degree of saturation, and the void content effects on the fatigue behaviour of hot mix asphalt (HMA) samples mixed in the laboratory. Some results on stiffness are also given. Fatigue characterization was carried out through a uniaxial tension‐compression (T‐C) tes...

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Bibliographic Details
Published inFatigue & fracture of engineering materials & structures Vol. 43; no. 6; pp. 1100 - 1114
Main Authors Lamothe, Sébastien, Perraton, Daniel, Di Benedetto, Hervé
Format Journal Article
LanguageEnglish
Published Oxford Wiley Subscription Services, Inc 01.06.2020
Wiley-Blackwell
Subjects
Asphalt
complex modulus
Compression tests
dry
Engineering Sciences
fatigue resistance
Fatigue strength
Fatigue tests
hot mix asphalt
partial saturation
Stiffness
Submerging
vacuum
water
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Summary:This paper analyses the water, the degree of saturation, and the void content effects on the fatigue behaviour of hot mix asphalt (HMA) samples mixed in the laboratory. Some results on stiffness are also given. Fatigue characterization was carried out through a uniaxial tension‐compression (T‐C) test performed in a controlled‐strain mode, at 10°C and 10 Hz, on cylindrical samples. Our results show that the stiffness is not significantly affected by the water. This finding could be attributed to the short period of immersion of samples in water, low testing temperature, low void content of tested samples, and high viscosity of bitumen used. Furthermore, the fatigue resistance of HMA partially saturated with water (PSW) is lower than the one obtained for dry materials.
ISSN:8756-758X
1460-2695
DOI:10.1111/ffe.13176