Full-scale instrumented testing of multiple airfield matting systems on soft soil to characterize permanent deformation

This paper presents results from full-scale testing of six airfield matting systems of various materials and designs that were evaluated on subgrades constructed to a California bearing ratio (CBR) of 6 and subjected to simulated aircraft loads. Mat breakage, deformation, and subgrade earth pressure were monitored during each test to determine the effectiveness of the airfield mats in reducing cumulative subgrade deformation and decreasing subgrade stresses. Based on test results, a simplified expression was developed to predict subgrade deformation on a CBR of 6 as a function of aircraft passes and airfield mat properties. The values predicted showed reasonable correlation with the measured data. The empirical equation can be used as an expedient tool for characterizing airfield matting behavior.