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A spherical indenta...
A spherical indentation test for quasi-non-destructive characterisation of asphalt concrete
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- Fadil, Hassan (författare)
- KTH,Byggnadsmaterial
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- Jelagin, Denis, Docent, 1979- (författare)
- KTH,Byggnadsmaterial
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- Partl, Manfred (författare)
- KTH,Byggnadsmaterial
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(creator_code:org_t)
- Springer, 2024
- 2024
- Engelska.
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Ingår i: Materials and Structures. - : Springer. - 1359-5997 .- 1871-6873.
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- The indentation test is a promising technique for the viscoelastic characterisation of asphalt concrete (AC). Indentation measurements are primarily influenced by the material properties in the direct vicinity of the indenter-specimen contact point. Accordingly, it may become a useful alternative for the characterisation of thin asphalt layers as well as for a quasi-non-destructive AC characterisation in the field. In this study, the spherical indentation test is used to measure the linear viscoelastic properties of AC mixtures extracted from a road test section. The measured complex moduli are compared to those obtained by the shear box test and are found to exhibit a linear correlation. The measurements are further analysed using the Gaussian mixture model to assign each indentation test to either aggregate-dominated or mastic-dominated response. The measurements attributed to mastic-dominated response are found to be more sensitive to the temperature and AC’s binder properties as compared to the average measurements. Accordingly, the proposed test method may provide a promising tool to measure AC viscoelastic properties and monitor the changes in AC binder phase in a non-destructive manner. A finite element micromechanical model is used to identify a representative scale for the response measured in mastic-dominated tests as well as to quantify the effect of measured properties on the AC damage propensity.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Infrastrukturteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Infrastructure Engineering (hsv//eng)
Nyckelord
- asphalt concrete
- bitumen
- mastic
- multiscale
- indentation
- modelling
- viscoelasticity
- Building Materials
- Byggnadsmaterial
- Byggvetenskap
- Civil and Architectural Engineering
- Engineering Mechanics
- Teknisk mekanik
- Hållfasthetslära
- Solid Mechanics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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