Laboratory Evaluation for Rutting Performance Based on the DASR Porosity of Asphalt Mixture

ABSTRACT Researchhas shown that gradation characteristics determine whether the aggregate structure in asphalt mixture results in good performance. A recent study indicated that large enough aggregates should engage dominantly to form an aggregate structure that can resist deformation; also, a new approach identified the porosity of the Dominant Aggregate Size Range (DASR) as the key parameter that determines whether or not a particular gradation results in a suitable aggregate structure. This paper presents a laboratory experiment to evaluate the DASR porosity in terms of its ability to identify unsuitable aggregate structures. Eight dense-graded Superpave mixtures were designed using two aggregate types (limestone and granite). For each aggregate type, mixtures with varying DASR porosity were produced and tested to evaluate laboratory rutting resistance. Test results indicated that the new approach successfully separated mixtures according to their observed laboratory rutting performance, indicating that DASR porosity can serve as an effective parameter to evaluate aggregate structure.

[1]  R. Carter,et al.  Random particle packing by reduced dimension algorithms , 1990 .

[2]  S. Esterby.  American Society for Testing and Materials , 2006 .

[3]  I Ishai,et al.  EFFECT OF GEOMETRIC IRREGULARITY OF AGGREGATES ON THE PROPERTIES AND BEHAVIOR OF BITUMINOUS CONCRETE , 1982 .

[4]  L Francken,et al.  New developments in analytical asphalt mix design , 1993 .

[5]  Byron E Ruth,et al.  Development of Tentative Guidelines for the Selection of Aggregate Gra¬dations in Hot-Mix Asphalt , 2002 .

[6]  B. Birgisson,et al.  Identification and Assessment of the Dominant Aggregate Size Range (DASR) of Asphalt Mixture , 2006 .

[7]  Reynaldo Roque,et al.  The need for inducing shear instability to obtain relevant parameters for HMA rut-resistance , 2004 .

[8]  Frank Fee,et al.  Aggregate gradation characterization factors and their relationships to fracture energy and failure strain of asphalt mixtures , 2002 .

[9]  L. Cooley,et al.  Coarse- Versus Fine-Graded Superpave Mixtures: Comparative Evaluation of Resistance to Rutting , 2002 .

[10]  S. Abo-Qudais,et al.  Effect of aggregate properties on asphalt mixtures stripping and creep behavior , 2007 .

[11]  B. Birgisson,et al.  Identification and Assessment of the Dominant Aggregate Size Range (DASR) of Asphalt Mixture (With Discussion) , 2006 .

[12]  Jlm Voskuilen,et al.  THE SPATIAL APPROACH OF HOT MIX ASPHALT , 2003 .

[13]  Daniel Duaquaye Darku.  Evaluation of the superpave gyratory compactor for assessing the rutting resistance of asphalt mixtures , 2003 .

[14]  Anishchik,et al.  Three-Dimensional Apollonian Packing as a Model for Dense Granular Systems. , 1995, Physical review letters.

[15]  Andy Collop,et al.  Dilation behaviour of asphalt mixtures , 2006 .

[16]  Byron E Ruth,et al.  MAXIMIZING SHEAR RESISTANCE OF ASPHALT MIXTURES BY PROPER SELECTION OF AGGREGATE GRADATION , 1997 .

[17]  Time-Temperature and Time-Aggregate Gradation Superposition in Asphalt Mixes , 2004 .

[18]  Samuel H Carpenter,et al.  The Bailey method of gradation evaluation: the influence of aggregate gradation and packing characteristics on voids in the mineral aggregate , 2001 .

[19]  Reynaldo Roque,et al.  Identification of a physical model to evaluate rutting performance of asphalt mixtures , 2006 .

[20]  Gale C. Page,et al.  EVALUATING THE USE OF LOWER VMA REQUIREMENTS FOR SUPERPAVE MIXTURES , 2004 .