01043825

Component

https://doi.org/10.3141/2001-14

http://scholar.google.com...alls&publication_year=2007

As part of the Long-Term Pavement Performance Program, an experiment identified as Specific Pavement Study 9A (SPS-9A) was established to evaluate the long-term performance of the Superpave® mix design methodology. At each project location, three main test sections were constructed, incorporating the conventional agency mix design, the Superpave Level I mix design with a 98% reliability performance-grade (PG) asphalt binder, and Superpave with an alternative PG binder to evaluate rutting or thermal cracking performance. Further supplementary test sections were constructed at most projects to evaluate the use of other PG asphalt binders with the Superpave mix design. This paper provides a performance comparison and paired T-test analysis of the Superpave Level I mix methodology with conventional agency mix methodology based on the SPS-9A experiment test sections. In addition, the performance impact of PG asphalt binder grades and the use of reclaimed asphalt pavement in Superpave was assessed by statistical analysis of field distresses. Field distresses evaluated in the study include fatigue cracking, thermal cracking, and rutting. Although some trends were identified, overall there was no statistically significant difference in performance between the considered PG asphalt binder grades and mix design types. These results would indicate that asphalt binder and mixture properties probably play a larger role in performance than binder and mix design classification. However, because of the level of asphalt binder and mixture property data in DataPave Release 20.0, a more detailed evaluation of binder and mixture properties on performance was not possible.

01082338

English

pp 118-131

2007

Transportation Research Record: Journal of the Transportation Research Board

9780309104272

Print

Figures (4) ; References (18) ; Tables (8)

Bituminous binders; Cracking; Field tests; Mix design; Rutting; Superpave; Test sections; Thermal degradation

Long-Term Pavement Performance Program; Specific Pavement Studies (LTPP); SPS-9A

Highways; Materials; I31: Bituminous Binders and Materials

PRP, TRIS, TRB, ATRI

Feb 8 2007 6:53PM

• Bulk Specific Gravity Measurements of 25.0-mm and 37.5-mm Coarse-Graded Superpave Mixes
• Development of New Moisture-Conditioning Procedure for Hot-Mix Asphalt
• Effect of Binder Type, Aggregate, and Mixture Composition on Fracture Energy of Hot-Mix Asphalt in Cold Climates
• Estimating Directional Permeability of Hot-Mix Asphalt by Numerical Simulation of Microscale Water Flow
• Evaluating Georgia’s Compaction Requirements for Stone Matrix Asphalt Mixtures
• Hot-Mix Asphalt Mixtures for Nevada's Intersections
• Moisture Susceptibility of Asphalt Mixtures with Known Field Performance: Evaluated with Dynamic Analysis and Crack Growth Model
• New Predictive Models for Viscosity and Complex Shear Modulus of Asphalt Binders: For Use with Mechanistic–Empirical Pavement Design Guide
• Optimum Number of Superpave Gyrations Based on Project Requirements
• Overlay Tester: A Simple Performance Test for Fatigue Cracking
• Predicting the Resilient Modulus of Asphalt Concrete from the Dynamic Modulus
• Prediction of Fatigue Cracking in Asphalt Pavements: Do We Follow the Right Approach?
• Quantification of Effect of Polymer-Modified Asphalt on Flexible Pavement Performance
• Rational Modeling of Tertiary Flow for Asphalt Mixtures
• Sample Size Requirements for Field Permeability Measurements of Hot-Mix Asphalt Pavements
• Spanish Experience with Gyratory Compactor and Indirect Tensile Test in Design and Control of Cold Recycled Asphalt Pavement
• Surface Free Energy to Identify Moisture Sensitivity of Materials for Asphalt Mixes