00819993

Component

https://doi.org/10.3141/1761-07

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

The SUperior PERforming Asphalt PAVEments (Superpave) gyratory compactor was developed as a tool in the Superpave mix design system to better simulate the field compaction of hot-mix asphalts. All Superpave gyratory compactors are designed to meet the specification criteria found in AASHTO TP4. At the present time, AASHTO TP4 does not contain a precision statement. Furthermore, many agencies have reported differences in the bulk specific gravity of compacted samples from different Superpave gyratory compactors, which have been properly calibrated. Data are presented and analyzed from three gyratory compactor proficiency sample testing programs, from field project Superpave gyratory compaction comparisons, and from mix design and quality control and assurance results from a state department of transportation. The data were then analyzed to determine the statistical (precision) and potential project implications that result from the observed differences. The results indicate that the precision of the Superpave gyratory compactor is better than the mechanical Marshall hammer. However, there were significant differences between the bulk specific gravity of mixes compacted in different gyratory compactors. These differences could potentially lead to discrepancies during the mix design verification and quality control and assurance testing of a given mix.

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

English

p. 50-60

2001

Transportation Research Record

0309072212

Figures (3) ; References (4) ; Tables (6)

Asphalt mixtures; Compaction; Density; Gyratory testing machines; Hot mix asphalt; Precision; Quality assurance; Quality control; Road construction; Specific gravity; Superpave

Construction; Highways; I52: Construction of Pavements and Surfacings

TRIS, TRB, ATRI

Nov 12 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
• 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
• WASHINGTON STATE DEPARTMENT OF TRANSPORTATION SUPERPAVE IMPLEMENTATION