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Title: Evaluation of May two-piece AM2 landing mat
Authors: Grau, Robert W. (Robert Walter)
Keywords: Landing mats
Runways (Aeronautics)--Evaluation
Publisher: Soils and Pavements Laboratory (U.S.)
U.S. Army Engineer Waterways Experiment Station
Series/Report no.: Miscellaneous paper (U.S. Army Engineer Waterways Experiment Station) ; S-68-11
Abstract: This investigation was conducted to evaluate two-piece AM2 landing mat extruded and fabricated by May Aluminum, Inc., El Campo, Texas. The mat was fabricated from two 12-in. -wide extrusions welded together to form a 2-ft-wide plank. A test section consisting of one sand and two clay subgrade items with various CBR strength values was constructed and surfaced with the mat. The test section was subjected to uniform coverage and single-line traffic representing operations of an aircraft having a 60,000-lb gross weight with a single-wheel main-gear assembly load of 27,000 lb with a 30-7.7 tire inflated to 100 psi. Based on the results obtained in this study, it is concluded that: A. The May two-piece AM2 will sustain 1600 cycles (188 coverages) of aircraft operations with a 27,000 lb single-wheel load and 400-psi tire-inflation pressure when placed on a subgrade having a CBR of 4.1 or greater throughout the period of traffic. B. The May two-piece AM2 will sustain 1600 passes of a 27,000-lb single-wheel load with a tire-inflation pressure of 400 psi in a single path located 1-1/2 ft or more from the mat end joints when placed on a sub grade having a CBR of 4.3 or greater throughout the period of traffic. C. General behavior of the mat in these tests was not materially affected by the two-piece nature of the planks.
Description: Miscellaneous Paper
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

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