00646104

Component

http://onlinepubs.trb.org...trr/1993/1417/1417-004.pdf

https://scholar.google.co...+Ang&publication_year=1993

A moisture treatment designed to simulate the condition that pavements are exposed to in the wet tropical climate of Singapore is described. A weathering chamber was specially fabricated to introduce simultaneous wetting-drying and thermal cycles. The experimental program subjected four different asphalt mixtures--an open-graded, a gap-graded, and two dense-graded mixes--to the moisture treatment. Results indicate that the treatment was able to induce bleeding, stripping, and softening (loss of strength) in test specimens. The extent and severity of the resultant moisture damage varied with the mixture type and with the length of the treatment cycle period and the number of treatment cycles. On the basis of the test results, a procedure consisting of 150 4-hr cycles of simultaneous wetting-drying and thermal cycles was recommended. The treatment procedure shows significant potential as a research and development tool for studying the moisture damage resistance of new asphalt mixtures and the effect of modified binders in a wet tropical climate.

This paper appears in Transportation Research Record No. 1417, Asphalt Concrete Mixtures. 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

01398728

English

p. 29-37

1993

Transportation Research Record

0309055652

Figures (8) ; References (18) ; Tables (3)

Asphalt mixtures; Bleeding (Pavements); Dense graded aggregates; Laboratory studies; Loss and damage; Mixtures; Moisture damage; Open graded aggregates; Softening point; Specimens; Stripping (Pavements); Tropics; Water; Weathering; Wetting and drying tests

Dense graded mixes

Singapore

Singapore

Highways; Materials; I31: Bituminous Binders and Materials

TRIS, TRB

Apr 18 1994 12:00AM

• ASPHALT MIXTURES CONTAINING CHEMICALLY MODIFIED BINDERS
• ASPHALT-RUBBER INTERACTIONS
• ASPHALT: MIXTURE DESIGN METHOD TO MINIMIZE RUTTING
• ASSESSING EFFECTS OF COMMERCIAL MODIFIERS ON MONTANA ASPHALTS BY CONVENTIONAL TESTING METHODS
• DEVELOPMENT OF CRITERIA TO EVALUATE UNIAXIAL CREEP DATA AND ASPHALT CONCRETE PERMANENT DEFORMATION POTENTIAL
• EFFECT OF AGGREGATE GRADATION ON MEASURED ASPHALT CONTENT
• EFFECT OF FLYASH ON ENGINEERING PROPERTIES OF SAND-ASPHALT-SULFUR PAVING MIXES
• EFFECT OF SEGREGATION ON PERFORMANCE OF HOT-MIX ASPHALT
• EFFECT OF STYRENE-BUTADIENE-STYRENE BLOCK COPOLYMER ON FATIGUE CRACK PROPAGATION BEHAVIOR OF ASPHALT CONCRETE MIXTURES
• EFFECTS OF LABORATORY ASPHALT CONCRETE SPECIMEN PREPARATION VARIABLES ON FATIGUE AND PERMANENT DEFORMATION TEST RESULTS USING STRATEGIC HIGHWAY RESEARCH PROGRAM A-003A PROPOSED TESTING EQUIPMENT
• EVALUATION OF INDIRECT TENSILE TEST FOR DETERMINING STRUCTURAL PROPERTIES OF ASPHALT MIX
• LABORATORY INVESTIGATION OF PROPERTIES OF ASPHALT-RUBBER CONCRETE MIXTURES
• PERFORMANCE OF BINDER-MODIFIERS IN RECYCLED ASPHALT PAVEMENT: FIELD TRIAL, 1987 TO 1992
• PERMANENT DEFORMATION: FIELD EVALUATION
• PREDICTING MAXIMUM PAVEMENT SURFACE TEMPERATURE USING MAXIMUM AIR TEMPERATURE AND HOURLY SOLAR RADIATION
• PREMATURE ASPHALT CONCRETE PAVEMENT DISTRESS CAUSED BY MOISTURE-INDUCED DAMAGE
• PREPARATION OF ASPHALT CONCRETE TEST SPECIMENS USING ROLLING WHEEL COMPACTION
• RESULTS OF ROUND-ROBIN TEST PROGRAM TO EVALUATE RUTTING OF ASPHALT MIXES USING LOADED WHEEL TESTER
• TEMPERATURE ESTIMATION FOR LOW-TEMPERATURE CRACKING OF ASPHALT CONCRETE
• THERMAL STRESS RESTRAINED SPECIMEN TEST TO EVALUATE LOW-TEMPERATURE CRACKING OF ASPHALT-AGGREGATE MIXTURES