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Strain Localization and Damage Distribution in SBS Polymer Modified Asphalt Mixtures
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Väg- och banteknik.ORCID-id: 0000-0003-0889-6078
2010 (engelsk)Inngår i: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, E-ISSN 2164-7402, Vol. 11, nr 4, s. 899-915Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A laboratory investigation was conducted to estimate the macroscopic cracking response of Styrene Butadiene Styrene (SBS) polymer modified asphalt mixtures by analyzing the localized strain distribution within the material microstructure. Five asphalt mixtures composed by the same aggregate gradation but different SBS modified asphalt binders were produced in the laboratory. An in-house developed Digital Image Correlation (DIC)-based system was employed to obtain 2D full-field strain maps of the specimens during tensile loading. Strain distributions were observed from three different test configurations, namely the Indirect Tensile Test (IDT), the Semi-Circular Bending (SCB) test and the Three-Point Bending (3PB) test. The cracking performances of the mixtures were evaluated using a viscoelastic fracture mechanics-based model entitled HMA Fracture Mechanics. The results clearly show the beneficial effect of SBS polymer modifier in redistributing the stress within the mastic.

sted, utgiver, år, opplag, sider
2010. Vol. 11, nr 4, s. 899-915
Emneord [en]
SBS Modifier, Cracking Resistance, Asphalt Mixture, Digital Image Correlation (DIC), HMA Fracture Mechanics
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-29717DOI: 10.3166/RMPD.11.899-915ISI: 000286025600006Scopus ID: 2-s2.0-78651514415OAI: oai:DiVA.org:kth-29717DiVA, id: diva2:397323
Merknad
QC 20110214Tilgjengelig fra: 2011-02-14 Laget: 2011-02-14 Sist oppdatert: 2017-12-11bibliografisk kontrollert

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