Nondestructive testing (NDT) is an important tool in the design, management, maintenance, and rehabilitation of airport pavements. An NDT device known as the Rolling Dynamic Deflectometer (RDD) was developed at the University of Texas at Austin to evaluate the structural condition of both flexible and rigid pavements. The RDD is a large truck with a servo-hydraulic vibrator that applies static and dynamic loads to the pavement through two specially designed loading rollers and measures deflections using an array of rolling sensors. Compared to other commonly used nondestructive testing devices that perform testing at discrete locations, the RDD measures continuous deflection profiles, efficiently and robustly. Among the many uses, continuous deflection profiles represent an excellent means of: (1) identifying locations where further discrete type testing should be performed, and (2) relating the relative character of the discrete test sites to the overall pavement system. The RDD has been used to test pavements at the Dallas-Fort Worth International, Hartsfield Atlanta International, Seattle-Tacoma International, Portland International, Meacham International, and Greenville Municipal Airports. Results from the Meacham International and Greenville Municipal Airports are presented in this paper. At Meacham International, a Jointed Concrete Pavement (JCP) was tested with both the RDD and a Falling Weight Deflectometer (FWD). At Greenville Municipal, a JCP with an asphalt overlay was tested. Analysis methods using the collected data are discussed. These analysis methods include statistical descriptors, location of "unique" pavement features, and the comparison of deflections at joints and mid-slab regions.


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    Title :

    Continuous Structural Evaluation of Airport Pavements with the Rolling Dynamic Deflectometer



    Conference:

    Airfield Pavements Specialty Conference 2003 ; 2003 ; Las Vegas, Nevada, United States


    Published in:

    Publication date :

    2004-02-06




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English