Change search
ReferencesLink to record
Permanent link

Direct link
The use of digital image correlation for accurate determination of fracture energy density in Hot Mix Asphalt (HMA)
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
Show others and affiliations
2008 (English)In: PAVEMENT CRACKING: MECHANISMS, MODELING, DETECTION, TESTING AND CASE HISTORIES / [ed] AlQadi IL, Scarpas T, Loizos A, BOCA RATON: CRC PRESS-TAYLOR & FRANCIS GROUP , 2008, 811-820 p.Conference paper (Refereed)
Abstract [en]

Knowledge of the conditions governing the initiation and propagation of cracks in Hot Mix Asphalt (HMA) mixtures is a prerequisite for a comprehensive understanding of HMA cracking mechanisms. According to the "HMA Fracture Mechanics" pavement cracking model recently developed at the University of Florida, fundamental tensile failure limits of mixtures (fracture energy density and tensile strength) are identified as key parameters in defining the cracking resistance of HMA mixes. A Digital Image Correlation (DIC) system, developed for the purpose of investigating the cracking behavior of HMA mixtures, has been applied to accurately determine fundamental tensile failure limits of SBS polymer modified mixes. The effect of modification on crack localization and crack growth was also investigated. One unmodified and four SBS polymer modified HMA mixes were tested performing both the Superpave IDT test and the Semi-Circular Bending (SCB) test. Tensile failure limits and cracking behavior of two of these mixes (the unmodified and a heavily SBS linear modified) were evaluated also from the Three Point Bending Beam (3PB) test. Full field strain maps indicate that the addition of SBS polymers in mixtures leads to more homogeneous stress states during tensile loading condition, resulting in high strains strongly localized up to the location of impending fracture.

Place, publisher, year, edition, pages
National Category
Civil Engineering Computer and Information Science
URN: urn:nbn:se:kth:diva-30856DOI: 10.1201/9780203882191.ch79ISI: 000266156100079ScopusID: 2-s2.0-79952156464ISBN: 978-0-415-47575-4OAI: diva2:402166
6th RILEM International Conference on Cracking in Pavements Chicago, IL, JUN 16-18, 2008
QC 20110307Available from: 2011-03-07 Created: 2011-03-04 Last updated: 2011-03-07Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Birgisson, Björn
By organisation
Highway and Railway Engineering (closed 20110301)
Civil EngineeringComputer and Information Science

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 59 hits
ReferencesLink to record
Permanent link

Direct link