00676644

Component

http://onlinepubs.trb.org...trr/1994/1454/1454-016.pdf

https://scholar.google.co...rown&publication_year=1994

To evaluate the process of densification in hot mix asphalt (HMA) pavements and its effect on laboratory properties, the National Center for Asphalt Technology at Auburn University initiated a performance study. It was to be a follow-up study to the Asphalt-Aggregate Mixture Analysis System (AAMAS), developed in the late 1980s. The first phase involved collection and analysis of data from 5-year-old pavements on AAMAS projects. Changes in HMA properties with time were evaluated. Pavement densification was found to continue after 2 years of traffic. Sections with higher initial voids showed greater changes in properties with time. For the first 2 years after construction, properties of HMA mixes were found to be affected significantly by changes in air voids; values of tensile strength and resilient modulus increased with a decrease in voids. Tensile-strain-at-failure values decreased continuously with time. In a majority of cases, 5-year in-place voids were found to be less than mix design voids. Densification generally increased with traffic during the 5-year investigation.

This paper appears in Transportation Research Record No. 1454, Asphalt Concrete Mixture Design and Performance. 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

01401258

English

p. 134-143

1994

Transportation Research Record

0309060621

Figures (8) ; References (5) ; Tables (7)

Air voids; Asphalt pavements; Data analysis; Data collection; Densification; Hot mix asphalt; Mathematical analysis; Modulus of resilience; Tensile strength

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

TRIS, TRB, ATRI

Apr 21 1995 12:00AM

• APPLICATION OF SHRP MIX PERFORMANCE-BASED SPECIFICATIONS
• COMPARATIVE PERFORMANCE OF PAVEMENT MIXES CONTAINING CONVENTIONAL AND ENGINEERED ASPHALTS
• COMPARISON OF RESULTS OBTAINED FROM THE LCPC RUTTING TESTER WITH PAVEMENTS OF KNOWN FIELD PERFORMANCE
• CORRELATION OF SELECTED LABORATORY COMPACTION METHODS WITH FIELD COMPACTION
• CRITERIA FOR EVALUATION OF RUTTING POTENTIAL BASED ON REPETITIVE UNIAXIAL COMPRESSION TEST
• DEVELOPMENT AND EVALUATION OF THE STRATEGIC HIGHWAY RESEARCH PROGRAM MEASUREMENT AND ANALYSIS SYSTEM FOR INDIRECT TENSILE TESTING AT LOW TEMPERATURES
• EFFECT OF MOISTURE IN AGGREGATES ON PERFORMANCE OF ASPHALT MIXTURES
• EFFECT OF MOISTURE ON LOW-TEMPERATURE ASPHALT MIXTURE PROPERTIES AND THERMAL-CRACKING PERFORMANCE OF PAVEMENTS
• EFFECTS OF LABORATORY SPECIMEN PREPARATION ON AGGREGATE-ASPHALT STRUCTURE, AIR-VOID CONTENT MEASUREMENT, AND REPETITIVE SIMPLE SHEAR TEST RESULTS
• EVALUATION OF FATIGUE AND PERMANENT DEFORMATION PROPERTIES OF SEVERAL ASPHALT-AGGREGATE FIELD MIXES USING STRATEGIC HIGHWAY RESEARCH PROGRAM A-003A EQUIPMENT
• EVALUATION OF STONE MATRIX ASPHALT VERSUS DENSE-GRADED MIXTURES
• EVALUATION OF THREE POLYMER MODIFIED ASPHALT CONCRETES
• EVALUATION OF ULTRATHIN FRICTION COURSE
• EVALUATION OF USING DIFFERENT STABILIZERS IN THE U.S. ROUTE 15 (MARYLAND) STONE MATRIX ASPHALT
• EXPERIENCES WITH THIN BITUMINOUS LAYERS IN AUSTRIA
• FIELD AND LABORATORY INVESTIGATION OF STRIPPING IN ASPHALT PAVEMENTS: STATE OF THE ART REPORT
• HEALING IN ASPHALT CONCRETE PAVEMENTS: IS IT REAL?
• RATIONAL METHOD FOR LABORATORY COMPACTION OF HOT-MIX ASPHALT (WITH DISCUSSION AND CLOSURE)
• SEVEN-YEAR PERFORMANCE EVALUATION OF SINGLE PASS, THIN LIFT BITUMINOUS CONCRETE OVERLAYS
• TEMPERATURE CONSIDERATIONS IN ASPHALT-AGGREGATE MIXTURE ANALYSIS AND DESIGN
• THIN SURFACING MATERIAL TRIALS IN THE UNITED KINGDOM