Cohesive Modeling of Fracture in Asphalt Mixtures at Low Temperatures

Low temperature cracking is the major distress observed in asphalt pavements in the northern US and Canada. In the past years fracture mechanics concepts were introduced to investigate the fracture properties of asphalt mixtures at low temperatures. In this paper the cohesive zone model (CZM) is used to describe the fracture behavior of asphalt mixtures at low temperatures and the interface element is used to numerically simulate the material response under monotonic loading. The simulation is calibrated with the experimental results from a newly proposed semi circular bend (SCB) test. A parametric analysis of the input material properties indicates that the tensile strength has a significant effect on the peak load in the SCB configuration, the modulus has a strong effect on the calculated stiffness of the SCB specimen, and the fracture energy influences the post-peak behavior of the asphalt mixtures. The calibrated numerical model was applied to simulate the low temperature cracking in a simplified asphalt pavement and to study the influence of these material parameters on the performance of asphalt pavements.

[1]  Mihai O. Marasteanu,et al.  Evaluation of the low temperature fracture resistance of asphalt mixtures using the semi circular bend test , 2004 .

[2]  S M Stoffels,et al.  DETERMINATION OF THE COEFFICIENT OF THERMAL CONTRACTION OF ASPHALT CONCRETE USING THE RESISTANCE STRAIN GAGE TECHNIQUE (WITH DISCUSSION) , 1996 .

[3]  K. Nam,et al.  Effect of binder and mixture variables on glass transition behavior of asphalt mixtures , 2004 .

[4]  Weixin Shen,et al.  Distributed Thermal Cracking of AC Pavement with Frictional Constraint , 1999 .

[5]  A. Molenaar,et al.  FRACTURE TOUGHNESS OF ASPHALT IN THE SEMI-CIRCULAR BEND TEST , 2000 .

[6]  David M. Potts,et al.  Zero thickness interface elements—numerical stability and application , 1994 .

[7]  A. Hillerborg,et al.  Analysis of crack formation and crack growth in concrete by means of fracture mechanics and finite elements , 1976 .

[8]  R. H. Dodds,et al.  Simulation of ductile crack growth in thin aluminum panels using 3-D surface cohesive elements , 2001 .

[9]  de R René Borst,et al.  On the numerical integration of interface elements , 1993 .

[10]  M. A. Crisfield,et al.  Progressive Delamination Using Interface Elements , 1998 .

[11]  M. Elices,et al.  Measurement of the fracture energy using three-point bend tests: Part 3—influence of cutting theP-δ tail , 1992 .

[12]  D. S. Dugdale.  Yielding of steel sheets containing slits , 1960 .

[13]  Z. Bažant,et al.  Fracture and Size Effect in Concrete and Other Quasibrittle Materials , 1997 .

[14]  G. I. Barenblatt.  THE MATHEMATICAL THEORY OF EQUILIBRIUM CRACKS IN BRITTLE FRACTURE , 1962 .

[15]  Xiaopeng Li,et al.  EVALUATION OF THE LOW TEMPERATURE FRACTURE RESISTANCE OF ASPHALT MIXTURES USING THE SEMI CIRCULAR BEND TEST (WITH DISCUSSION) , 2004 .

[16]  Rilem.  Determination of the fracture energy of mortar and concrete by means of three-point bend tests on notched beams , 1985 .

[17]  Mihai O. Marasteanu,et al.  Dynamic Complex Modulus of Mn/ROAD Asphalt Mixtures , 2003 .

[18]  Reynaldo Roque,et al.  DETERMINATION OF CRACK GROWTH RATE PARAMETER OF ASPHALT MIXTURES USING THE SUPERPAVE IDT , 1999 .

[19]  T. Siegmund,et al.  Modeling Crack Growth in Thin Sheet Aluminum Alloys , 2000 .

[20]  I. L. Lim,et al.  Fracture testing of a soft rock with semi-circular specimens under three-point bending. Part 2—mixed-mode , 1994 .

[21]  M. Ortiz,et al.  FINITE-DEFORMATION IRREVERSIBLE COHESIVE ELEMENTS FOR THREE-DIMENSIONAL CRACK-PROPAGATION ANALYSIS , 1999 .