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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/5859

Title: Creep recovery behaviour of bituminous binders - relevance to permanent deformation of asphalt pavements
Authors: Mturi, GAJ
Nkgapele, M
O'Connell, J
Keywords: Multiple Stress Creep and Recovery
MSCR
Asphalt pavements
Road infrastructure
Rail infrastructure
Bituminous binders
Issue Date: May-2012
Citation: Mturi, GAJ, Nkgapele, M and O'Connell, J. Creep recovery behaviour of bituminous binders - relevance to permanent deformation of asphalt pavements. 2nd International Conference on Road and Rail Infrastructure, Dubrovnik, Croatia, 7-9 May 2012, pp 335-341
Series/Report no.: Workflow;8935
Abstract: The increase in traffic loads and loading time in road pavements worldwide has resulted in the widespread usage of polymer modified binders (PMBs) since they offer increased resistance to pavement distresses. The extensive use of inherently different modifiers has expanded the range of PMBs to select from when designing pavements in order to avoid pavement deformation. The new binder selection criterion using the Multiple Stress Creep and Recovery (MSCR) protocol as per ASTM D7405 is meant to differentiate the resistance to permanent deformation of different road binders. The MSCR test is essentially a repeated creep-recovery test at a fixed loading/unloading interval. This paper aims to highlight the limitations of the MSCR test but also show how creep tests can differentiate the resistance to permanent deformation for different bituminous binders, whether modified or unmodified. The paper will also illustrate creep as a time-dependent deformation phenomenon that is specific to the rate and magnitude of traffic load.
Description: 2nd International Conference on Road and Rail Infrastructure, Dubrovnik, Croatia, 7-9 May 2012
URI: http://hdl.handle.net/10204/5859
Appears in Collections:Infrastructure engineering
General science, engineering & technology
General research interest

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