Investigation of size effect in asphalt mixture fracture testing at low temperature

Eyoab Zegeye, Jialiang Le, Mugur Turos, Mihai Marasteanu

Research output: Contribution to journalConference article

2 Scopus citations

Abstract

The Semi-Circular Bending (SCB) fracture test is commonly used to evaluate the low temperature fracture properties of asphalt mixtures. The present work investigates the presence of size effect in SCB fracture testing of asphalt mixtures. Un-notched and notched geometrically similar SCB specimens of various sizes are tested at -24°C loaded by crackmouth opening displacement (CMOD). The effect of specimen size on the nominal strength is investigated through the well established size effect theories and conclusions are drawn regarding the fracture behaviour of mixtures at low temperature.

Original languageEnglish (US)
Pages (from-to)219-238
Number of pages20
JournalAsphalt Paving Technology: Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions
Volume81
StatePublished - Dec 1 2012
EventAsphalt Paving Technology 2012, AAPT - Austin, TX, United States
Duration: Apr 1 2012Apr 4 2012

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Keywords

  • Fracture energy
  • Fracture process zone
  • Nominal strength
  • Semi-circular bending (SCB); asphalt mixture
  • Size effect

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