00669035

Component

http://onlinepubs.trb.org...trr/1994/1436/1436-003.pdf

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

The conventional French fatigue test has yielded significantly different results for two asphalt materials with the same grade of pure asphalt. A research program was begun to study the influence of the asphalt nature on the fatigue behavior of asphalt materials. The program included full-scale experimentation on the circular test track of the Laboratoire Central des Ponts et Chaussees, laboratory tests, and mechanical analysis. Four asphalt mixes with pure asphalt were tested on the experimental pavement: two asphalt concretes with asphalts 50/70 of A and B origin, a high-modulus asphalt mix (bitumen 10/20), and a classical asphalt road base (bitumen A). The asphalt materials were fatigue tested in the laboratory according to several procedures: two-point bending fatigue tests on trapezoidal samples, with controlled strain, with and without rest periods, and with controlled stress, without rest periods; and three-point bending fatigue tests on parallelepiped-like samples, with controlled stress, with and without rest periods. The ranking of the materials according to their laboratory fatigue behavior depends strongly on the test procedure. The mechanical analysis carried out on the basis of the laboratory test results and the behaviors observed on the test track indicate that the controlled stress fatigue tests lead to results closer to the test track behavior and that the shift factor to be applied to the high-modulus asphalt mix should be 1. All these results have to be confirmed by a repetition of this experiment still in progress.

This paper appears in Transportation Research Record No. 1436, Asphalt Concrete Mix Materials. 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

01401249

English

p. 17-27

1994-10

Transportation Research Record

030905513X

Figures (4) ; References (5) ; Tables (5)

Asphalt mixtures; Circular test tracks; Fatigue (Mechanics); Fatigue tests; Laboratory tests; Mechanical analysis

Highways; Materials; I31: Bituminous Binders and Materials

TRIS, TRB

Nov 23 1994 12:00AM

• DESIGNING ASPHALT PAVEMENTS FOR EXTREME CLIMATES
• EFFECT OF ANTISTRIP ADDITIVES ON THE PROPERTIES OF POLYMER-MODIFIED ASPHALT BINDERS AND MIXTURES
• EFFECT OF COMPOSITION ON ASPHALT RECYCLING AGENT PERFORMANCE
• EMPIRICAL EVALUATION OF OLIVE HUSK IN ASPHALT CEMENT BINDER AND BITUMINOUS CONCRETE
• EVALUATION AND CHARACTERIZATION OF A RUBBER-MODIFIED HOT MIX ASPHALT PAVEMENT
• EVALUATION AND FIELD VALIDATION OF PROPOSED STRATEGIC HIGHWAY RESEARCH PROGRAM BINDER SPECIFICATION FOR THERMAL CRACKING
• EVALUATION OF NATURAL SANDS USED IN ASPHALT MIXTURES
• IMPROVED LOW-TEMPERATURE FRACTURE PERFORMANCE FOR RUBBER-MODIFIED ASPHALT BINDERS
• INVESTIGATION OF LABORATORY AGING PROCESSES OF ASPHALT BINDERS USED IN FLORIDA
• INVESTIGATION OF RUTTING OF ASPHALT SURFACE LAYERS: INFLUENCE OF BINDER AND AXLE LOADING CONFIGURATION
• LOW-TEMPERATURE FRACTURE TOUGHNESS OF POLYETHYLENE-MODIFIED ASPHALT BINDERS
• RHEOLOGICAL AND RHEO-OPTICAL CHARACTERIZATION OF ASPHALT CEMENT AND EVALUATION OF RELAXATION PROPERTIES
• SOFTENING OF ASPHALTS IN DILUTE SOLUTIONS AT PRIMARY DISTILLATION CONDITIONS
• USE OF RUBBER IN ASPHALT PAVEMENTS: KANSAS EXPERIENCE