00824551

Component

https://doi.org/10.3141/1778-21

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

Bonded concrete overlays are a cost-effective strategy for rehabilitating and strengthening old concrete pavements. Volume changes of the overlay concrete may cause debonding at the interface between old and new concrete or surface cracking, detrimentally affecting long-term performance of the pavement. Experimental measurements and numerical analyses were pursued to understand distribution of stress arising from thermal change or drying shrinkage under restrained conditions. Laboratory overlay specimens were made to measure opening displacement at the interface. Debonding profiles at the interface were determined by using a dye technique. A finite element model was developed to study debonding behavior and crack tendency due to volume changes. Physical experiments were used to define nonlinear gradients of drying shrinkage and bond strengths for input into the model. The model was validated by comparing the predicted opening displacements and debonding profile with the experimental measurements. The results indicate how high-performance concrete mixtures may be problematic for overlay applications if full wet curing is not used.

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

English

p. 174-181

2001

Transportation Research Record

0309072425

Figures (11) ; References (8) ; Tables (3)

Bond strength (Materials); Concrete curing; Concrete overlays; Cracking; Debonding; Drying; Finite element method; High performance concrete; Interfaces; Laboratory tests; Mathematical models; Shrinkage; Thermal stresses; Validation; Volume changes

Bonded concrete overlays

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 ASPHALT CONCRETE LAYER INTERFACES
• 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
• 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