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Determination of Moisture Susceptibility of Mastic-Stone Bond Strength and Comparison to Thermodynamical Properties
Faculty of Civil Engineering and Geosciences, Delft University of Technology.ORCID iD: 0000-0003-3968-6778
2008 (English)In: 2008 Journal of the Association of Asphalt Paving Technologists,: Vol 77  , 2008, Vol. 77, 435-478 p.Conference paper, Published paper (Refereed)
Abstract [en]

The fundamental characterization and quantification of the moisture susceptibility of asphaltic mixes is a very important and timely topic for the asphaltic pavements industry, and has thus far posed a serious challenge for asphalt mix designers. In this research a fundamental computational-experimental test procedure is demonstrated to measure the moisture susceptibility of the mastic-aggregate bond strength and bond energy. The methodology combines displacement controlled direct tension tests with numerical moisture diffusion analyses and is demonstrated for six different mastic-stone combinations which are frequently used in the Dutch open friction courses. From the results it can be seen that the computed adhesive moisture susceptibilities are consistent with the expected field performance. The measured bond moisture susceptibilities are furthermore compared with the thermodynamical work of adhesion. It is shown that, qualitatively, the moisture resistance performance ranking is similar, but that the actual bond energies show three to four orders of magnitude difference. From this it can be concluded that, even though the surface energy approach can be very useful in enhancing material selection procedures, it is still important to actually measure the mechanical strength of the selected aggregate-mastic bond with a mechanical test.

Place, publisher, year, edition, pages
2008. Vol. 77, 435-478 p.
Series
Journal of the association of asphalt paving technologists, ISSN 0270-2932
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:kth:diva-84061ISI: 000262470400013OAI: oai:DiVA.org:kth-84061DiVA: diva2:499128
Conference
2008 Annual Meeting of the Association of Asphalt Paving Technologists, AAPT; Philadelphia, PA; 25 April 2008 through 30 April 2008
Note
TSC import 1896 2012-02-10. QC 20120301Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2012-03-01Bibliographically approved

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Kringos, Nicole

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