01333315

Component

https://doi.org/10.3141/2227-09

http://scholar.google.com...aran&publication_year=2011

Several state departments of transportation evaluate the modulus of pavement layers from nondestructive deflection tests such as the falling weight deflectometer (FWD). Although the FWD is a widely used nondestructive testing device, it still does not fully represent the loading conditions generated by moving vehicular traffic. Therefore, the modulus values backcalculated from FWD data may be different from those values backcalculated from vehicular traffic loading data. A comparison is presented of modulus values backcalculated from FWD and strain gauge measurements collected on a 1,000-ft-long instrumented section of I-35 in central Oklahoma. The FWD data were captured at different temperatures with different loading configurations. Meanwhile, longitudinal and transverse strain data were captured from May 30, 2008, through October 28, 2009, over a wide range of middepth pavement temperatures (40°F to 110°F) under actual vehicular traffic loading. The influence of different backcalculated modulus values is demonstrated through the prediction of remaining life in terms of number of equivalent single-axle loads of the existing pavement. Also presented is a description of the testing program, data collection efforts, and subsequent analysis for the I-35 instrumented section. Overall, modulus values backcalculated from the FWD and from longitudinal strain gauges showed close agreement at temperatures above 50°F.

01358795

11-3115

English

pp 79-86

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309167505

Print

Figures (8) ; References (17)

Backcalculation; Equivalent single axle loads; Falling weight deflectometers; Modulus of elasticity; Service life; Strain gages; Temperature

Interstate 35

Oklahoma

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways

TRIS, TRB, ATRI

Feb 17 2011 6:24PM

• Backcalculation Models to Evaluate Light Falling Weight Deflectometer Moduli of Road Foundation Layer Made with Bottom Ash Waste
• Backcalculation of Dynamic Modulus Mastercurve from Falling Weight Deflectometer Surface Deflections
• Contribution of Hysteresis Component of Tire Rubber Friction on Stone Surfaces
• Data Processing and Analysis Software for Continuous Friction Measurement Equipment
• Development of NYSLAB: Improved Analysis Tool for Jointed Pavement
• Evaluation of Factors Affecting Long-Term Performance of Cold In-Place Recycled Pavements in New York State
• Evaluation of Near-Surface Stress States in Asphalt Concrete Pavement: Three-Dimensional Tire–Pavement Contact Model
• Evaluation of Pavement System Based on Ground-Penetrating Radar Full-Waveform Simulation
• Evaluation of Selected Effects of Pavement Riding Quality on Logistics Costs in South Africa
• Field Evaluation and Cost-Effectiveness of Saw and Seal Method to Control Reflection Cracking in Composite Pavements
• Life-Cycle Environmental Analysis for Evaluation of Pavement Rehabilitation Options
• Mechanistic–Empirical Evaluation of Aggregate Base and Granular Subbase Quality Affecting Flexible Pavement Performance in Minnesota
• New Mechanistic–Empirical Approach for Estimating the Effect of Roughness on Vehicle Durability
• Numerical Investigation of Response of Widened Pavement System
• Revised Methodology for Computing International Friction Index
• Ride Specifications: Virginia’s Experience, Accomplishments, and Challenges
• Sand Mix Interlayer to Control Reflective Cracking in Hot-Mix Asphalt Overlay
• Selection of Pavement for Highway Rehabilitation Based on Life-Cycle Cost Analysis: Validation of California Interstate 710 Project, Phase 1
• Simple Laboratory Method for Measuring Pavement Macrotexture: Pavement Cores and Aggregate Image Measurement System
• System for Measuring Splash on Wet Pavements