TY - JOUR
T1 - Towards asphalt mixture morphology evaluation with the virtual specimen approach
AU - Onifade, Ibrahim
AU - Jelagin, Denis
AU - Birgisson, Björn
AU - Kringos, Nicole
PY - 2015/10/15
Y1 - 2015/10/15
N2 - The morphology of asphalt mixture can be defined as a set of parameters describing the geometrical characteristics of its constituent materials, their relative proportions as well as spatial arrangement in the mixture. The present study is carried out to investigate the effect of the morphology on its meso- and macro-mechanical response. An analysis approach is used for the meso-structural characterisation based on the X-ray computed tomography (CT) data. Image processing techniques are used to systematically vary the internal structure to obtain different morphology structures. A morphology framework is used to characterise the average mastic coating thickness around the main load carrying structure in the structures. The uniaxial tension simulation shows that the mixtures with the lowest coating thickness exhibit better inter-particle interaction with more continuous load distribution chains between adjacent aggregate particles, less stress concentrations and less strain localisation in the mastic phase.
AB - The morphology of asphalt mixture can be defined as a set of parameters describing the geometrical characteristics of its constituent materials, their relative proportions as well as spatial arrangement in the mixture. The present study is carried out to investigate the effect of the morphology on its meso- and macro-mechanical response. An analysis approach is used for the meso-structural characterisation based on the X-ray computed tomography (CT) data. Image processing techniques are used to systematically vary the internal structure to obtain different morphology structures. A morphology framework is used to characterise the average mastic coating thickness around the main load carrying structure in the structures. The uniaxial tension simulation shows that the mixtures with the lowest coating thickness exhibit better inter-particle interaction with more continuous load distribution chains between adjacent aggregate particles, less stress concentrations and less strain localisation in the mastic phase.
KW - asphalt concrete
KW - image-based modeling
KW - micromechanical modeling
KW - morphology
KW - x-ray computed tomography
UR - http://www.tandfonline.com/10.1080/14680629.2015.1098561
UR - http://www.scopus.com/inward/record.url?scp=84945206184&partnerID=8YFLogxK
U2 - 10.1080/14680629.2015.1098561
DO - 10.1080/14680629.2015.1098561
M3 - Article
AN - SCOPUS:84945206184
SN - 1468-0629
VL - 17
SP - 579
EP - 599
JO - Road Materials and Pavement Design
JF - Road Materials and Pavement Design
IS - 3
ER -