Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 40, Issue -, Pages 397-404Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2012.11.001
Keywords
Bitumen; Polyphosphoric acid (PPA); Asphaltenes; Rheology
Ask authors/readers for more resources
The rheological effects of polyphosphoric acid (PPA) on bituminous binders with similar mechanical and chemical-physical properties, but with different chemical compositions, have been investigated. The effects of polyphosphoric acid were studied through traditional bituminous-binder-type characterization tests and via rheological investigations by dynamic and steady shear rheometry. It was observed that PPA, probably reducing the asphalten aggregate size, extends the range of viscoelastic behavior, moving the transition to a viscous liquid towards higher temperature and, therefore, improving the mechanical behavior for high temperature applications. These effects seem more evident at low PPA concentrations and suggest the potential existence of saturation effects. (C) 2012 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available