00621473

Component

http://onlinepubs.trb.org...trr/1991/1317/1317-006.pdf

https://scholar.google.co....+Tu&publication_year=1991

Six asphalt concrete mixes were tested to investigate the effects of variation in the aggregate gradation on mix properties. The asphalt contents of the mixes were maintained at the job mix design contents. The gradation variations were representative of typical construction extremes. Five gradations were tested from each mix: (a) the job mix formula (JMF) gradation, (b) a fine gradation, (c) a coarse gradation, (d) a coarse-fine gradation, and (e) a fine-coarse gradation. The fine and coarse gradations deviated from the JMF gradation by the maximum amount to the fine or coarse side. The fine-coarse and coarse-fine gradations crossed over the JMF gradation curve from the maximum fine (or coarse) amount on the largest size fraction to the maximum coarse (or fine) amount on the smallest size fraction. Properties investigated were creep stiffness, split tensile strength, resilient modulus, Marshall stability, Marshall flow, air voids, and voids in mineral aggregate. Analysis of the data revealed that the fine-coarse and coarse-fine gradation variations had the greatest impact on mix properties but that none of the variations had a significant effect on resilient modulus. The data also showed that within the range normally encountered, air void content had a greater impact on split tensile strength than did gradation variation.

This paper appears in Transportation Research Record No. 1317, Asphalt Mixtures: Design, Testing, and Evaluation 1991. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01407169

p. 52-60

1991

Transportation Research Record

030905155X

Figures (2) ; References (4) ; Tables (20)

Aggregate gradation; Air voids; Asphalt concrete; Creep properties; Marshall test; Modulus of resilience; Tensile strength

Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials; I36: Aggregates

TRIS, TRB, ATRI

Apr 30 1992 12:00AM

• ANALYSIS OF CRACK PROPAGATION IN ASPHALT CONCRETE USING COHESIVE CRACK MODEL
• DEVELOPMENT OF A PRACTICAL METHOD FOR DESIGN OF HOT-MIX ASPHALT
• EFFECT OF LOADING MAGNITUDE ON MEASURED RESILIENT MODULUS OF ASPHALTIC CONCRETE MIXES
• EFFECT OF TEMPERATURE AND MIXTURE VARIABLES ON FATIGUE LIFE PREDICTED BY DIAMETRAL FATIGUE TESTING
• EFFECT OF THE USE OF MODIFIERS ON PERFORMANCE OF ASPHALTIC PAVEMENTS
• EFFECTS OF SAMPLE PREPARATION AND AIR-VOID MEASUREMENT ON ASPHALT CONCRETE PROPERTIES
• EVALUATION OF MARSHALL AND HVEEM MIX DESIGN PROCEDURES FOR LOCAL USE
• EVALUATION OF MIX PROPERTIES OF COLD IN-PLACE RECYCLED MIXES
• EVALUATION OF RESIN-MODIFIED PAVING PROCESS
• INVESTIGATION OF RUTTING POTENTIAL USING STATIC CREEP TESTING ON POLYMER-MODIFIED ASPHALT CONCRETE MIXTURES
• MATERIAL CHARACTERIZATION AND INHERENT VARIATION ANALYSIS OF ASPHALTIC FIELD CORES
• METHODS TO DETERMINE POLYMER CONTENT OF MODIFIED ASPHALT
• NEW TECHNIQUE TO MEASURE MOISTURE IN HOT-MIX ASPHALT CONCRETE NONDESTRUCTIVELY
• PERFORMANCE ASSESSMENT OF BINDER-RICH POLYETHYLENE-MODIFIED ASPHALT CONCRETE MIXTURES (NOVOPHALT)