00819991

Component

https://doi.org/10.3141/1761-05

http://scholar.google.com...iggs&publication_year=2001

The Washington State Department of Transportation (WSDOT) has investigated components of the Strategic Highway Research Program (SHRP)/Superpave technology to include performance-grade (PG) binder usage and specification validation, gyratory mix design, the Superpave Shear Tester, and field performance of Superpave mixes. With a focus on field performance, validation of the binder specification in respect to low-temperature cracking was accomplished using binder and field performance data from 28 projects. The results were encouraging: the original SHRP algorithm for binder selection correctly "predicted" field performance in 22 cases. The original SHRP algorithm was subsequently refined as part of the Federal Highway Administration's Long-Term Pavement Performance (LTPP) Program. The LTPP algorithm used for binder selection correctly predicted field performance in 26 cases. Since 1993, of the 44 WSDOT projects with a Superpave technology component, 17 parallel Hveem and Superpave mix designs have been conducted. In 13, Superpave design asphalt content was equal to or greater than the Hveem design asphalt content, although the difference was insignificant. A conventional Hveem mix design was conducted on 18 projects using a PG binder (Hveem-PG). The remaining 26 projects were considered to be Superpave because materials selection and mix design were established in accordance with the Asphalt Institute's SP-2, Superpave Level 1 mix design. According to WSDOT practice, the following indices trigger maintenance: pavement structural condition (PSC), rutting, or International Roughness Index (IRI). Although "young," all 44 projects are performing well. The average values of rutting, PSC, and IRI are all below the "trigger" values. In rutting and PSC, performance of Hveem-PG and Superpave projects is virtually identical. However, ride quality of Superpave projects is rougher than that of Hveem-PG binder projects.

This paper appears in Transportation Research Record No. 1761, Construction 2001.

English

p. 32-40

2001

Transportation Research Record

0309072212

Figures (11) ; References (4) ; Tables (7)

Algorithms; Asphalt content; Bituminous binders; Field studies; Mix design; Pavement performance; Ride quality; Rutting; Specifications; Superpave; Validation

International Roughness Index; Long-Term Pavement Performance Program; Strategic Highway Research Program

Hveem mix design; Pavement structural condition

Washington (State)

Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Nov 9 2001 12:00AM

• ALLOCATION OF RISKS UNDER BUILD-OPERATE-TRANSFER DELIVERY APPROACH FOR TRANSPORT INFRASTRUCTURE PROJECTS
• CRITICAL PATH METHOD-LINE OF BALANCE MODEL FOR EFFICIENT SCHEDULING OF REPETITIVE CONSTRUCTION PROJECTS
• DERIVATION OF EQUATION FOR COST OF PREMATURE PAVEMENT FAILURE
• DEVELOPING CRITICAL FIELD PERMEABILITY AND PAVEMENT DENSITY VALUES FOR COARSE-GRADED SUPERPAVE PAVEMENTS
• EFFECT OF FLAT AND ELONGATED COARSE AGGREGATE ON FIELD COMPACTION OF HOT-MIX ASPHALT
• EFFECT OF SUPERPAVE GYRATORY COMPACTOR TYPE ON COMPACTED HOT-MIX ASPHALT DENSITY
• EVALUATING DESIGN-BUILD PROCUREMENT DOCUMENTS FOR HIGHWAY PROJECTS: HOW GOOD ARE THEY?
• EXAMINATION OF OPERATOR VARIABILITY FOR SELECTED METHODS FOR MEASURING BULK SPECIFIC GRAVITY OF HOT-MIX ASPHALT CONCRETE
• FEASIBILITY OF USING PRECAST CONCRETE PANELS TO EXPEDITE CONSTRUCTION OF PORTLAND CEMENT CONCRETE PAVEMENTS
• FIELD CONDITIONING OF SUPERPAVE ASPHALT MIXES
• LESSONS-LEARNED SYSTEM FOR HIGHWAY CONSTRUCTIBILITY
• NEW JERSEY'S SUPERPAVE SPECIFICATION: THE NEXT GENERATION
• NIGHTTIME CONSTRUCTION ISSUES
• OVERVIEW OF NATIONAL WOOD IN TRANSPORTATION PROGRAM AND ITS FOCUS ON COMMERCIALIZING PROVEN TECHNOLOGY
• PARIS-LEXINGTON ROAD PROJECT: PROJECT REPORT
• STATISTICALLY BASED METHODS FOR VERIFICATION TESTING
• THEORY BEHIND VIBRATION-BASED, ONBOARD ASPHALT DENSITY MEASURING SYSTEM
• USING PAVEMENT DISTRESS DATA TO ASSESS IMPACT OF CONSTRUCTION ON PAVEMENT PERFORMANCE