A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bitumen healing investigation using a specific fracture test
In order to estimate the influence of bitumen on the fatigue behaviour of bituminous mixes, a test was developed and allows to estimate fracture properties and healing capacity of bitumen. A thin film of binder between two steel protuberances, simulating the pseudo contact of two aggregates, was subjected to successive tension loads with a constant strain rate during the test. Applying a rest period between every tension stage allows healing in the thin bitumen film. Evolution of the crack size during the test was investigated using different methods. This paper deals with the combination of the experimental evolution of the sample stiffness, modelling of the considered test and ultrasonic measurement. The modelling method, shortly described here, integrates both viscoelasticity and the sample geometry. A quantitative method using ultrasonic measurement is also presented to study crack size evolution when the test is repeated several times.
Bitumen healing investigation using a specific fracture test
In order to estimate the influence of bitumen on the fatigue behaviour of bituminous mixes, a test was developed and allows to estimate fracture properties and healing capacity of bitumen. A thin film of binder between two steel protuberances, simulating the pseudo contact of two aggregates, was subjected to successive tension loads with a constant strain rate during the test. Applying a rest period between every tension stage allows healing in the thin bitumen film. Evolution of the crack size during the test was investigated using different methods. This paper deals with the combination of the experimental evolution of the sample stiffness, modelling of the considered test and ultrasonic measurement. The modelling method, shortly described here, integrates both viscoelasticity and the sample geometry. A quantitative method using ultrasonic measurement is also presented to study crack size evolution when the test is repeated several times.
Bitumen healing investigation using a specific fracture test
Maillard, Samuel (author) / de La Roche, Chantal (author) / Hammoum, Ferhat (author) / Such, Christian (author) / Piau, Jean Michel (author)
Road Materials and Pavement Design ; 5 ; 45-63
2004-01-01
19 pages
Article (Journal)
Electronic Resource
Unknown
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