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A platform for research: civil engineering, architecture and urbanism
Homothetic behaviour investigation on fracture toughness of asphalt mixtures using semicircular bending test
Highlights Investigated homothetic behaviour of asphalt mixtures’ fracture properties. Determined fracture toughness of 216 dense graded asphalt specimens using SCB test. Evaluated the effect of specimen thickness using mixed-level factorial design. Recommended specimen thickness range to obviate geometric dependency on fracture.
Abstract The objective of this study was to investigate the homothetic behaviour of asphalt mixes in respect of fracture toughness. A total of 216 samples encompassing six dense graded asphalt mixes were tested at three temperatures with four replicates per mix type using static semicircular bending test based on the AASHTO TP 105-13 protocol. A mixed-level factorial design was employed to understand the effect of variables: asphalt content, air voids, temperature, and thickness. Statistical analyses showed that the change in the thickness from 40 to 50mm produced an insignificant change in the fracture toughness. It was also found that the selection of the specimen thickness to evaluate fracture toughness in the range of 40–50mm was not significantly dependent on asphalt mix material properties and temperature.
Homothetic behaviour investigation on fracture toughness of asphalt mixtures using semicircular bending test
Highlights Investigated homothetic behaviour of asphalt mixtures’ fracture properties. Determined fracture toughness of 216 dense graded asphalt specimens using SCB test. Evaluated the effect of specimen thickness using mixed-level factorial design. Recommended specimen thickness range to obviate geometric dependency on fracture.
Abstract The objective of this study was to investigate the homothetic behaviour of asphalt mixes in respect of fracture toughness. A total of 216 samples encompassing six dense graded asphalt mixes were tested at three temperatures with four replicates per mix type using static semicircular bending test based on the AASHTO TP 105-13 protocol. A mixed-level factorial design was employed to understand the effect of variables: asphalt content, air voids, temperature, and thickness. Statistical analyses showed that the change in the thickness from 40 to 50mm produced an insignificant change in the fracture toughness. It was also found that the selection of the specimen thickness to evaluate fracture toughness in the range of 40–50mm was not significantly dependent on asphalt mix material properties and temperature.
Homothetic behaviour investigation on fracture toughness of asphalt mixtures using semicircular bending test
Saha, Gourab (author) / Biligiri, Krishna Prapoorna (author)
Construction and Building Materials ; 114 ; 423-433
2016-03-29
11 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2016
| British Library Online Contents | 2016