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Porosity of the Dominant Aggregate Size Range to Evaluate Coarse Aggregate Structure of Asphalt Mixtures
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Highway and Railway Engineering (closed 20110301).ORCID iD: 0000-0003-0889-6078
2009 (English)In: Journal of materials in civil engineering, ISSN 0899-1561, E-ISSN 1943-5533, Vol. 21, no 1, 32-39 p.Article in journal (Refereed) Published
Abstract [en]

This paper presents the results from an evaluation of a new gradation-based framework developed for identifying and assessing the coarse aggregate structure of dense-graded mixtures for resistance to rutting. A theoretical packing-based analysis procedure was used to evaluate the coarse aggregate structure for hot mix asphalt mixtures. This procedure was applied to an extensive range of mixtures. A key feature of this new framework is the concept of the existence of a dominant aggregate size range (DASR). The porosity of the DASR is calculated based on an interaction diagram to evaluate the degree of particle-to-particle interaction of coarse aggregates between contiguous sieve sizes. In addition, an interaction diagram-based criteria for dense-graded Superpave mixtures are determined, as well as criteria for the porosity of the DASR. Based on the field and laboratory-based rutting performance of the mixtures evaluated in this paper, it was concluded that DASR along with the porosity of the DASR may provide a framework for evaluating the gradation of dense graded mixtures for their likely rutting potential.

Place, publisher, year, edition, pages
American Society of Civil Engineers (ASCE), 2009. Vol. 21, no 1, 32-39 p.
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-18156DOI: 10.1061/(asce)0899-1561(2009)21:1(32)ISI: 000263111900004Scopus ID: 2-s2.0-57949092859OAI: oai:DiVA.org:kth-18156DiVA: diva2:336202
Note

QC 20100525

Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-05-09Bibliographically approved

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Birgisson, Björn

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