00931966

Component

https://doi.org/10.3141/1789-08

http://scholar.google.com...tton&publication_year=2002

The pseudostrain concept based on the extended nonlinear elastic-viscoelastic correspondence principle has been demonstrated in this research to be an appropriate and efficient method for evaluating microdamage and healing during the fatigue damage process. Pseudostiffness can be used to monitor microdamage and healing during the fatigue test. Pseudostiffness decreases consistently with an increasing number of loading cycles, which indicates that the microdamage occurs during the fatigue test. The significant recovery of pseudostiffness after rest periods indicates that there is a strong healing due to rest periods. The effects of hydrated lime on fatigue microdamage and healing have also been evaluated based on pseudostiffness recovery. The impact of healing during rest periods is evident and substantial. The degree of healing is mixture dependent. The ability of a mixture to heal is largely related to binder properties. Adding hydrated lime to the mixtures tested generally improved the healing potential of the mixtures. In general, stiffer mixtures have better healing and longer rest periods result in greater healing. The mechanism of healing is evaluated by two theories. The initial healing rate is governed by nonpolar surface energy, and the final healing rate is governed by polar surface energy.

This paper appears in Transportation Research Record No. 1789, Bituminous Paving Mixtures 2002.

English

p. 73-79

2002

Transportation Research Record

0309077141

Figures (10) ; References (17) ; Tables (2)

Asphalt concrete; Binders; Calcium hydroxide; Fatigue tests; Surface energy

Healing; Microdamage; Pseudostiffness

Highways; Materials; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Oct 3 2002 12:00AM

• AGGREGATE BLENDING FOR ASPHALT MIX DESIGN: BAILEY METHOD
• APPLICATION OF DIGITAL IMAGE CORRELATION METHOD TO MECHANICAL TESTING OF ASPHALT-AGGREGATE MIXTURES
• COARSE- VERSUS FINE-GRADED SUPERPAVE MIXTURES: COMPARATIVE EVALUATION OF RESISTANCE TO RUTTING
• COMPARISON OF FUNDAMENTAL AND SIMULATIVE TEST METHODS FOR EVALUATING PERMANENT DEFORMATION OF HOT-MIX ASPHALT
• DETERMINING THE LOW-TEMPERATURE FRACTURE TOUGHNESS OF ASPHALT MIXTURES
• DYNAMIC MODULUS OF ASPHALT CONCRETE WITH A HOLLOW CYLINDER TENSILE TESTER
• EFFECT OF AGGREGATE STRUCTURE ON RUTTING POTENTIAL OF DENSE-GRADED ASPHALT MIXTURES
• EFFECT OF FINE AGGREGATE ANGULARITY ON COMPACTION AND SHEARING RESISTANCE OF ASPHALT MIXTURES
• EVALUATION OF MEASUREMENT TECHNIQUES FOR ASPHALT PAVEMENT DENSITY AND PERMEABILITY
• HISTORY AND FUTURE CHALLENGES OF GYRATORY COMPACTION: 1939 TO 2001
• INFLUENCE OF ASPHALT TACK COAT MATERIALS ON INTERFACE SHEAR STRENGTH
• LOUISIANA EXPERIENCE WITH CRUMB RUBBER-MODIFIED HOT-MIX ASPHALT PAVEMENT
• MICROMECHANICAL ANALYSIS OF VISCOELASTIC PROPERTIES OF ASPHALT CONCRETES
• PREDICTING VISCOELASTIC RESPONSE AND CRACK GROWTH IN ASPHALT MIXTURES WITH THE BOUNDARY ELEMENT METHOD
• ROUND-ROBIN STUDY FOR FIELD PERMEABILITY TEST
• RUNOFF CONTROL IN POROUS PAVEMENTS
• SHEAR PROPERTIES AS VIABLE MEASURES FOR CHARACTERIZATION OF PERMANENT DEFORMATION OF ASPHALT CONCRETE MIXTURES
• SIMPLE PERFORMANCE TEST FOR FATIGUE CRACKING AND VALIDATION WITH WESTRACK MIXTURES
• STANDARDIZED PROCEDURE FOR ANALYSIS OF DYNAMIC MODULUS \E*\ DATA TO PREDICT ASPHALT PAVEMENT DISTRESSES
• TARGET AND TOLERANCE STUDY FOR ANGLE OF GYRATION USED IN SUPERPAVE GYRATORY COMPACTOR
• TIME-TEMPERATURE SUPERPOSITION FOR ASPHALT CONCRETE AT LARGE COMPRESSIVE STRAINS
• TOWARD A MICROMECHANICS-BASED PROCEDURE TO CHARACTERIZE FATIGUE PERFORMANCE OF ASPHALT CONCRETE
• USE OF STIFFNESS OF HOT-MIX ASPHALT AS A SIMPLE PERFORMANCE TEST