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 a 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 crack-mouth 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 language | English (US) |
|---|---|
| Pages (from-to) | 88-101 |
| Number of pages | 14 |
| Journal | Road Materials and Pavement Design |
| Volume | 13 |
| Issue number | SUPPL. 1 |
| DOIs | |
| State | Published - Jun 2012 |
Keywords
- Asphalt mixture
- Fracture energy
- Fracture process zone
- Nominal strength
- Semi-Circular Bending (SCB)
- Size effect