00824546

Component

https://doi.org/10.3141/1778-16

http://scholar.google.com...calf&publication_year=2001

A new constitutive model for the asphalt concrete layer interface is proposed. Direct shear tests at four levels of normal load and three temperatures were performed on two types of asphalt concrete layer interface: with and without a tack coat. The shear stress-displacement curves determined in these tests were used to derive the constitutive model, as the tangential and normal stresses at the interface are decoupled. In the proposed model, the shear stress and displacement are proportional until the shear stress equals the shear strength and the interface fails. After failure, a friction model may be used to represent the interface condition. Three parameters were considered to completely describe the interface behavior: the interface reaction modulus K, which is the slope of the shear stress-displacement curve; the shear strength Smax; and the friction coefficient after failure. For the interface with a tack coat, K and Smax are not affected by the normal stress level, but they are affected for the interface without a tack coat. All three parameters of the constitutive model are temperature dependent. A testing configuration for determining the shear fatigue behavior of the interface is also described. The fatigue tests indicated a linear increase of the permanent shear displacement with the number of load repetitions, the rate of increase being higher for higher stresses. The fatigue test can be used for a comparative evaluation of the durability of different types of interfaces.

This paper appears in Transportation Research Record No. 1778, Design and Rehabilitation of Pavements 2001.

English

p. 132-139

2001

Transportation Research Record

0309072425

Figures (5) ; Photos (1) ; References (23) ; Tables (1)

Asphalt concrete pavements; Coefficient of friction; Direct shear tests; Durability; Failure; Fatigue tests; Interfaces; Pavement layers; Repeated loads; Shear strength; Shear stress; Tack coats; Temperature

Interface reaction modulus; Shear displacement

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB

Feb 11 2002 12:00AM

• AASHTO DRAINAGE COEFFICIENTS FOR FLEXIBLE PAVEMENTS
• ANALYSIS OF IN SITU HORIZONTAL JOINT MOVEMENTS IN RIGID PAVEMENTS
• BENEFITS AND COSTS OF JOINTED PLAIN CONCRETE PAVEMENT DESIGN FEATURES
• CHARACTERIZATION AND MODELING OF AXIAL SLAB-SUPPORT RESTRAINT
• CHARACTERIZATION OF STIFFNESS PARAMETERS IN DESIGN OF CONTINUOUSLY REINFORCED AND JOINTED PAVEMENTS
• CONSTRUCTION AND PERFORMANCE OF ALTERNATIVE CONCRETE PAVEMENT DESIGNS IN WISCONSIN
• DESIGN, CONSTRUCTION, AND MAINTENANCE GUIDELINES FOR POROUS ASPHALT PAVEMENTS
• DEVELOPMENT OF RAPID SOLUTIONS FOR PREDICTION OF CRITICAL CONTINUOUSLY REINFORCED CONCRETE PAVEMENT STRESSES
• EARLY AGE STRESSES AND DEBONDING IN BONDED CONCRETE OVERLAYS
• EFFECTS OF INTERFACE CONDITION AND HORIZONTAL WHEEL LOADS ON THE LIFE OF FLEXIBLE PAVEMENT STRUCTURES
• FLEXIBLE PAVEMENT DESIGN IN MICHIGAN: TRANSITION FROM EMPIRICAL TO MECHANISTIC METHODS
• GRANULAR OVERLAYS ON LOW-VOLUME ROADS IN WASHINGTON STATE: STRUCTURAL AND PERFORMANCE CHARACTERISTICS
• LAYER THICKNESS VARIABILITY FOR FLEXIBLE PAVEMENTS IN NORTH CAROLINA
• MEASURING RESILIENT MODULUS OF GRANULAR MATERIALS IN FLEXIBLE PAVEMENTS
• MODELING OF JOINTED PLAIN CONCRETE PAVEMENT FATIGUE CRACKING IN PAVESPEC 3.0
• OVERLAY PERFORMANCE IN CANADIAN STRATEGIC HIGHWAY RESEARCH PROGRAM'S LONG-TERM PAVEMENT PERFORMANCE STUDY
• PROPAGATION MECHANISMS FOR SURFACE-INITIATED LONGITUDINAL WHEELPATH CRACKS (WITH DISCUSSION AND CLOSURE)
• REPAIR OF ULTRATHIN WHITETOPPING PAVEMENTS
• THIN BONDED CONCRETE OVERLAYS IN ILLINOIS: PRELIMINARY REPORT ON PERFORMANCE
• USE OF LONG-TERM PAVEMENT PERFORMANCE DATA FOR CALIBRATION OF PAVEMENT DESIGN MODELS
• USING PAVEMENT AS SOLAR COLLECTOR: EFFECT ON PAVEMENT TEMPERATURE AND STRUCTURAL RESPONSE
• VALIDATION OF HIPERPAV FOR PREDICTION OF EARLY-AGE JOINTED CONCRETE PAVEMENT BEHAVIOR