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Title: Small aperture testing for airfield pavement evaluation
Authors: Hall, Jim W.
Elsea, Darrell R.
Keywords: Airfield pavements
Runway pavements
Aperture testing
Nondestructive tests
Pavement tests
Publisher: Soils and Pavements Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Miscellaneous Paper
Abstract: The high intensity of aircraft operations on most military airfields prohibits the closing of runways and other pavement facilities in order to measure the physical properties of the pavement necessary to evaluate its load-carrying capability. Also, the introduction of multiple-wheel heavy gear load aircraft coupled with an ever increasing number of aircraft operations has emphasized the need to know the load-carrying capability of pavement structures and to anticipate future pavement performance. The objective of this study was to develop techniques for determination of the required pavement properties that can be used with a minimum of pavement destruction and interference with aircraft operations. As a result of this study, a small aperture technique was developed to obtain CBR sttength values and samples used to determine moisture, density, and classification of the pavement components through a 6-in.-diam core hole. Equipment and test procedures are discussed. Data obtained by the small aperture method are shown to agree well with those obtained by conventional test procedures. A nuclear density device developed especially for this study is discussed, and data are presented that show the accuracy of the device. The small aperture tests were not found to have a time advantage, but manpower requirements were cut in half. The tests can be performed between traffic operations, and most aircraft can operate over the 6-in.-diam core hole.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

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