00824540

Component

https://doi.org/10.3141/1778-10

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

A comparison study from the experimental results of the falling weight deflectometer (FWD) backcalculated modulus values, laboratory-measured resilient modulus values under field and laboratory conditions, and laboratory limerock bearing ratio values for granular materials in flexible pavements is presented. Based on the measured results, a case study was conducted to illustrate the use of laboratory resilient modulus for pavement design through the American Association of State Highway and Transportation Officials (AASHTO) flexible pavement design procedure. The results indicated that the average laboratory resilient moduli at optimum compacted conditions were 1.1 times higher than the average laboratory determined resilient moduli under in situ conditions. The FWD backcalculated moduli were about 1.8 times higher than the laboratory resilient moduli for the granular materials. The laboratory optimum moisture content was comparable to the field-measured in situ moisture content, although the average laboratory-determined maximum dry density was slightly higher than the average field-measured in situ dry density. The flexible pavement design could be based on the resilient modulus values found in the laboratory.

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

English

p. 81-90

2001

Transportation Research Record

0309072425

Figures (10) ; Photos (2) ; References (18) ; Tables (2)

Backcalculation; Case studies; Dry density; Falling weight deflectometers; Field tests; Flexible pavements; Granular materials; Laboratory tests; Measurement; Modulus of resilience; Moisture content; Pavement design

American Association of State Highway and Transportation Officials

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

TRIS, TRB

Feb 8 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
• 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
• 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