Characterisation of long term field aging of polymer modified bitumen in porous asphalt

Dave van Vliet, S. Erkens, Greet Leegwater

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

The effect of long term field aging on different types of polymer
modified binders used in two-layer porous asphalt is studied using different test
methods. Chemical and rheological tests are performed on samples taken from
road sections at different moments in time in search of trends in long term field
aging.
The results show that chemical analyses performed with GPC and mfrared can
be used to study the effect of short term aging. However, these tests are not
accurate enough to establish the more subtle trends that play a role i n long term
field aging. The tests proved to be very valuable to determine the type of
modification in the binder.
Master curves showing the complex modulus and the phase angle at different
temperatures determined with the Dynamic Shear Rheometer (DSR) show linear
trends for long term aging when an aging period of 8 years is observed. As
expected the complex modulus increases with aging, while the phase angle
decreases. There is one exception to this, in polymer modified binders the phase
angle decrease with age at low loading frequencies which can be related to
degradation of the polymer modification.
Long term f i e ld aging, polymer modified binder, GPC, FTIR, DSR.
Original languageEnglish
Title of host publicationproceedings of the 7th RILEM International conference on cracking in pavements
Pages889-899
Number of pages10
Volume2
Publication statusPublished - 2012
Externally publishedYes
Event7th Rilem international conference on cracking in pavements - Delft, Netherlands
Duration: 20 Jun 201222 Jun 2012

Conference

Conference7th Rilem international conference on cracking in pavements
Country/TerritoryNetherlands
City Delft
Period20/06/1222/06/12

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