00731117

Component

https://doi.org/10.3141/1545-17

http://scholar.google.com...OWDA&publication_year=1996

Gyratory compaction is the centerpiece of the Strategic Highway Research Program asphalt mixture design procedure Superpave. A number of factors could potentially affect the behavior of asphalt mixes in the gyratory compactor. One of these is specimen size. Four specimen sizes each of one unmodified and two rubber-modified hot-mix asphalt concrete mixes were compacted in the Superpave gyratory compactor to determine the effect of specimen size on compaction and volumetric properties of the mixes. All specimens were compacted using a 150-mm-diameter mold. Specimens of each of the mix types were prepared using three gradations and three binder contents. Densification curves and plotting number of gyrations versus percent of theoretical maximum density were developed for each mix type/gradation/binder content combination. A strong trend in the densification data was observed, in which curves representing specimen sizes of 3500, 5000, and 6500 g were grouped together, apart from the curve representing a 2000-g specimen size. This trend, the grouping of larger specimen data apart from small specimen data, was also observed in volumetric data (optimum asphalt content, voids in mineral aggregate, and voids filled with asphalt). These trends were observed in most of the mix type/gradation/binder content combinations. The data presented suggest that for specimens of sufficient size, for example, greater than 3500 g, specimen size does not significantly affect the volumetric or compaction properties of hot mix specimens, which supports the ruggedness of the gyratory compaction procedure.

This paper appears in Transportation Research Record No. 1545, Asphalt Pavement Surfaces and Asphalt Mixtures.

English

p. 126-132

1996

Transportation Research Record

030905916X

Figures (9) ; References (5) ; Tables (2)

Aggregate gradation; Asphalt concrete; Asphalt content; Asphalt rubber; Binder content; Compaction; Densification; Hot mix asphalt; Mineral aggregates; Properties of materials; Size; Specimens; Superpave; Trend (Statistics); Void ratios; Volumetric analysis

Strategic Highway Research Program

Gyratory compaction; Specimen size; Voids; Volumetric properties

Highways; Materials; I31: Bituminous Binders and Materials

TRIS, TRB

Feb 3 1997 12:00AM

• ANALYSIS OF THERMAL FATIGUE DISTRESS OF ASPHALT CONCRETE PAVEMENTS
• CHARACTERIZING PROPERTIES OF ASPHALT CEMENT AT COLD TEMPERATURES
• COMPARATIVE FIELD EVALUATION OF SHALE OIL-MODIFIED ASPHALT WITH POLYMER-MODIFIED ASPHALTS
• COMPLEX MODULUS TESTING OF ASPHALTIC CONCRETE: RILEM INTERLABORATORY TEST PROGRAM
• DEVELOPMENT AND EVALUATION OF DYNAMIC FLEXURAL BEAM FATIGUE TEST SYSTEM
• DYNAMIC PROPERTIES OF FIBER-MODIFIED OVERLAY MIXTURE
• EVALUATION AND IMPLEMENTATION OF AUTOMATED PROFILOGRAM REDUCTION SYSTEM: APPARE (WITH DISCUSSION AND CLOSURE)
• EVALUATION OF SURFACE TREATMENT PRACTICES IN UNITED STATES
• FIELD VALIDATION OF THERMAL STRESS RESTRAINED SPECIMEN TEST: SIX CASE HISTORIES
• HOT IN-PLACE RECYCLING OF ASPHALT PAVEMENTS: OREGON EXPERIENCE
• INITIAL IMPROVEMENT IN RIDE QUALITY OF JOINTED, PLAIN CONCRETE PAVEMENT WITH MICROSURFACING: CASE STUDY
• MINIMUM VOIDS IN MINERAL AGGREGATE IN HOT-MIX ASPHALT BASED ON GRADATION AND VOLUMETRIC PROPERTIES
• MODIFIED COLD IN-PLACE ASPHALT RECYCLING
• POLYMER-MODIFIED ASPHALT PAVEMENTS IN ONTARIO: PERFORMANCE AND COST-EFFECTIVENESS
• PREDICTION OF ASPHALT CEMENT CONTENT OF COMPACTED HOT-MIX ASPHALT SPECIMENS USING NUCLEAR GAUGES
• PREDICTION OF LOW-TEMPERATURE CRACKING OF ASPHALT CONCRETE MIXTURES WITH THERMAL STRESS RESTRAINED SPECIMEN TEST RESULTS
• SKIDDING CHARACTERISTICS OF PAVEMENT SURFACES INCORPORATING STEEL SLAG AGGREGATES
• STRUCTURAL ANALYSIS OF AGGREGATE BLENDS USING STRATEGIC HIGHWAY RESEARCH PROGRAM GYRATORY COMPACTOR
• SUPERPAVE MODELS: PREDICTING PERFORMANCE DURING DESIGN AND CONSTRUCTION
• TWENTY-FIVE YEARS OF PAVEMENT SMOOTHNESS SPECIFICATIONS IN GEORGIA
• USE OF GEORGIA LOADED WHEEL TESTER TO EVALUATE RUTTING OF ASPHALT SAMPLES PREPARED BY SUPERPAVE GYRATORY COMPACTOR