Study on Jointing System of Airport Concrete Pavement Considering Environmental Loading The environmental load on concrete pavement can be categorized into temperature and moisture loads which include temperature distribution and drying shrinkage in the concrete slab. In this study, a joint spacing calculation method that considers environmental load, which is essential for a mechanistic design of airport concrete pavement, is introduced. The distribution of concrete temperature with slab thickness being considered is predicted by a pavement temperature prediction program to calculate equivalent linear temperature difference. The concrete drying shrinkage is predicted by improving an existing model to calculate differential shrinkage equivalent linear temperature difference considering regional relative humidity. In addition, the stress relaxation is considered in the drying shrinkage. Eventually, the equivalent linear temperature difference due to temperature and the differential shrinkage equivalent linear temperature difference due to moisture were combined into the total equivalent linear temperature difference as airport environmental load. The environmental load, which represents domestic regional weather conditions, applied on the eight civilian and two military domestic airports were calculated and compared by the method developed in this study. www.yooshin.com 237
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