TY - JOUR
T1 - Continuum-based micromechanical models for asphalt materials
T2 - Current practices & beyond
AU - Zhang, Hong
AU - Anupam, Kumar
AU - Scarpas, Tom
AU - Kasbergen, Cor
AU - Erkens, Sandra
AU - Al Khateeb, Loay
PY - 2020
Y1 - 2020
N2 - The mechanical properties of asphalt mixture are always required for the evaluation of the durability of pavements. In order to obtain these properties without conducting expensive laboratory tests and using calibrated empirical models, research studies have been carried out to develop micromechanics-based models. Continuum-based micromechanical models (CBMM), which are developed based on continuum mechanics, have increasingly been utilized to estimate the mechanical properties of asphalt materials based on the fundamental properties of individual constituents. These analytical models are expected to provide reliable predictions without the need for extensive computational facilities. Although the utilization of CBMM has been presented by several past studies, most of the studies do not provide a concise and critical review of these models. Therefore, in this paper, a complete review of CBMM was presented. Commonly used CBMM were introduced in detail and their advantages and disadvantages were discussed and compared. Comprehensive summaries and critical discussions about their current utilization and limitations for predicting the mechanical properties of asphalt materials were given. Further modifications and new development for addressing the limitations were extensively described and discussed. In the end, research challenges were highlighted and future recommendations from different perspectives were proposed.
AB - The mechanical properties of asphalt mixture are always required for the evaluation of the durability of pavements. In order to obtain these properties without conducting expensive laboratory tests and using calibrated empirical models, research studies have been carried out to develop micromechanics-based models. Continuum-based micromechanical models (CBMM), which are developed based on continuum mechanics, have increasingly been utilized to estimate the mechanical properties of asphalt materials based on the fundamental properties of individual constituents. These analytical models are expected to provide reliable predictions without the need for extensive computational facilities. Although the utilization of CBMM has been presented by several past studies, most of the studies do not provide a concise and critical review of these models. Therefore, in this paper, a complete review of CBMM was presented. Commonly used CBMM were introduced in detail and their advantages and disadvantages were discussed and compared. Comprehensive summaries and critical discussions about their current utilization and limitations for predicting the mechanical properties of asphalt materials were given. Further modifications and new development for addressing the limitations were extensively described and discussed. In the end, research challenges were highlighted and future recommendations from different perspectives were proposed.
KW - Asphalt materials
KW - Continuum-based micromechanical models
KW - Effective stiffness
UR - http://www.scopus.com/inward/record.url?scp=85086820119&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2020.119675
DO - 10.1016/j.conbuildmat.2020.119675
M3 - Review article
AN - SCOPUS:85086820119
SN - 0950-0618
VL - 260
SP - 1
EP - 25
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 119675
ER -