00676633

Component

http://onlinepubs.trb.org...trr/1994/1454/1454-005.pdf

https://scholar.google.co...+Ong&publication_year=1994

A study was conducted to examine the effects of using aggregates with initial absorbed moisture during asphalt mixture production. On the basis of the moisture-absorption capacity of the granite aggregate studied, asphalt mixtures were prepared by using aggregates with five different initial moisture contents: 0% (over-dried condition), 0.3% (corresponding to a so-called "air-dried" condition), 1.0%, 2.0%, and 3.5% (approximately saturated-surface-dry condition). Specimens were subjected to two different laboratory weathering treatments, namely, a wetting-drying treatment and a heating-cooling treatment. Initial aggregate moisture contents were found harmful to the moisture damage resistance of the mixture, but they did not significantly affect the performance of the mixtures exposed to the heating-cooling treatment in the absence of externally applied water. The addition of hydrated lime to the five mixtures substantially improved their moisture damage resistance when subjected to the wetting-drying treatment, and its effectiveness was affected only marginally by the level of initial moisture content in the aggregate.

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. 28-35

1994

Transportation Research Record

0309060621

Figures (9) ; References (15) ; Tables (1)

Aggregates; Asphalt mixtures; Calcium hydroxide; Heating, cooling and ventilation equipment; Loss and damage; Materials by strength or resistance to chemical action; Moisture content; Moisture damage; Scour; Weathering

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

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 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
• FIVE-YEAR EVALUATION OF HMA PROPERTIES AT THE AAMAS TEST PROJECTS
• 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