01023800

Component

https://doi.org/10.3141/1940-15

http://scholar.google.com...+Tia&publication_year=2005

The Florida Department of Transportation (FDOT) conducted an experiment to address the effects of polymer modifiers on the performance of Superpave® mixes by using a heavy vehicle simulator. Two fine-graded Superpave mixes were considered. One mix included a virgin binder meeting the requirements of PG 67-22, and the other contained a styrene– butadiene–styrene polymer (SBS)-modified binder meeting those of PG 76-22. Both respective mixes contained the same effective binder content, aggregate components, and gradation. The mixes were designed for 10 million to 30 million equivalent single-axle loads with the use of the standard Superpave mix design methodology. During placement of these mixes, all standard FDOT density requirements and acceptance criteria were applicable. The subsequent investigation showed that the sections with SBS-modified mixture significantly outperformed those with the un­modified mixture. It was also determined that rutting in the unmodified mixture was primarily a function of shear flow, whereas rutting in the SBS-modified mixture was caused mainly by densification. This paper presents a description of the testing program, the data collection effort, and the subsequent analyses and findings, focusing primarily on the initiation mechanisms of rutting in asphalt mixtures as generated and observed under accelerated pavement testing.

01023790

English

pp 136-145

2005

Transportation Research Record: Journal of the Transportation Research Board

0309094151

Print

Figures (9) ; References (4) ; Tables (4)

Accelerated tests; Asphalt mixtures; Data collection; Densification; Pavement performance; Rutting; Styrene butadiene styrene; Superpave; Test sections

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

May 7 2006 6:20PM

• Accuracy of Ground-Penetrating Radar for Estimating Rigid and Flexible Pavement Layer Thicknesses
• Analysis of Long-Term Effectiveness of Thin Hot-Mix Asphaltic Concrete Overlay Treatments
• Assessment of Aging at FHWA’s Pavement Testing Facility
• Developing Roadway Standards for Ride Quality from the Customer’s Perspective
• Development of a Crack Type Index
• Evaluation of Top-Down Cracks in Asphalt Pavements by Using a Self-Calibrating Ultrasonic Technique
• Incorporating Variability into Pavement Performance, Life-Cycle Cost Analysis, and Performance-Based Specification Pay Factors
• Pavement Management System Based on Financial Consequence
• Prediction of Pavement Crack Initiation from In-Service Pavements: A Duration Model Approach
• Quantification of Pavement Damage Caused by Dual and Wide-Base Tires
• Statistical Analysis of Automated Versus Manual Pavement Condition Surveys
• Superaccelerated Pavement Testing on Full-Scale Concrete Slabs
• Use of Pavement Management System Data to Monitor Performance of Pavements Under Warranty
• Wavelet-Based Multiresolution Analysis of Pavement Profiles as a Diagnostic Tool
• Wavelet-Based Pavement Distress Classification