Journal
ROAD MATERIALS AND PAVEMENT DESIGN
Volume 7, Issue -, Pages 163-180Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14680629.2006.9690063
Keywords
stress intensity factor; fracture energy; mode I and mixed-mode; single-edge notched beam and semi-circular bending
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Mode I and mixed-mode I-II fracture properties of two bituminous mixtures, a Stone Mastic Asphalt and a Dense Bitumen Macadam, have been determined by means of three-point bending tests on notched specimens. Two specimen geometries, namely single-edge notched beam and semi-circular bending, have been used in the study. Comparisons have been made based on two fracture parameters, the stress intensity factor and the fracture energy. Experimental results have shown that for mode I there is good agreement between the stress intensity factors obtained from the two specimen geometries. Moreover, both geometries have been found suitable to study mixed-mode fracture of bituminous materials.
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