Nondestructive Evaluation of Pavement Structural Condition for Rehabilitation Design

The Falling Weight Deflectometer (FWD) is most commonly used to evaluate highway pavement structural condition for estimation of pavement remaining service life and overlay design. Recently, the need to accurately characterize layer material properties of the existing pavement has increased with the implementation of the new American Association of State Highway and Transportation Officials (AASHTO) Mechanistic-Empirical Pavement Design Guide (MEPDG). Although a number of studies have been conducted for using FWD data in rehabilitation design, several challenges still exist due to the complex nature of pavement system. These challenges include but are not limited to: (1) the viscoelastic modulus of asphalt mixture that varies depending on temperature profile in the pavement and loading frequency; (2) the nonlinear anisotropy of unbound material; and (3) dynamic analysis of pavement behavior under FWD loading. The primary goal of this research project is to develop an integrated method for pavement in-situ condition evaluation and rehabilitation design based on modeling and analysis of FWD deflection data. To achieve this goal, the research objectives include: (1) developing an advanced model to simulate pavement behavior under FWD loading that consider viscoelasticity of asphalt layer and nonlinearity of unbound layers; and (2) assessing relationship between existing layer condition, critical pavement responses, and deflection basin parameters. It is envisioned that the proposed methodology can be used by state highway agencies in practice for assessing existing pavement condition and selecting appropriate rehabilitation strategies.

• Record URL:
  http://www.utrc2.org/research/projects/nondestructive-evaluation-pavement

Language

• English

Project

• Status: Completed
• Funding: $41546.00
• Contract Numbers:

  49997-48-25

• Sponsor Organizations:

  Research and Innovative Technology Administration

  University Transportation Centers Program
  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  University Transportation Research Center

  City College of New York
  Marshak Hall, Suite 910, 160 Convent Avenue
  New York, NY  United States  10031
• Project Managers:

  Eickemeyer, Penny

• Performing Organizations:

  Rutgers University, Piscataway

  Department of Civil and Environmental Engineering
  623 Bowser Road
  Piscataway, NJ  United States  08854
• Principal Investigators:

  Wang, Hao

• Start Date: 20141001
• Expected Completion Date: 0
• Actual Completion Date: 20160531
• Source Data: RiP Project 36991

Subject/Index Terms

• TRT Terms: Condition surveys; Falling weight deflectometers; Overlays (Pavements); Pavement design; Pavement maintenance; Properties of materials; Service life
• Identifier Terms: Mechanistic-Empirical Pavement Design Guide
• Subject Areas: Design; Highways; Pavements;

Filing Info

• Accession Number: 01534355
• Record Type: Research project
• Source Agency: University Transportation Research Center
• Contract Numbers: 49997-48-25
• Files: UTC, RIP
• Created Date: Aug 12 2014 1:01AM