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- Title
An investigation on the effects of flaky particles on the properties of asphaltic mixtures.
- Authors
Darabadi, Babak Kazemi; Taherkhani, Hasan
- Abstract
Flaky particles, because of their shape, are considered as inferior aggregates in asphaltic mixtures, and specifications usually set limits on the amount of flaky particles in asphaltic mixtures. In this study, the effects of flaky particles content on the volumetric properties, Marshall Stability and creep behaviour of hot mixed asphaltic concrete have been investigated. Specimens with two different types of gradation and specified amounts of flaky particles were made and used for Marshall Stability and static creep tests. Test results show that the Marshall Stability decreases and the air voids content of asphaltic mixture and the voids in mineral aggregate increase as the flaky particles content increases. It is also found that flaky particles cause increase in permanent deformation and decrease in creep stiffness. The creep tests also show that the recoverable deformation of the mixtures decreases as the flaky particles content increases.
- Subjects
ASPHALT concrete; MIXTURES; VOLUMETRIC analysis; STABILITY (Mechanics); DEFORMATIONS (Mechanics); CREEP of concrete; MINERAL aggregates; PARTICLE size determination
- Publication
Canadian Journal of Civil Engineering, 2015, Vol 42, Issue 11, p865
- ISSN
0315-1468
- Publication type
Article
- DOI
10.1139/cjce-2014-0458