Many airfield pavements are constructed with Portland Cement Concrete (PCC). Scheduledmaintenance helps restore performance of deteriorated PCC slabs allowing optimal flightoperations. Severely deteriorated PCC slabs require a well formulated plan to efficiently andeffectively restore damaged slabs. This study investigates the feasibility and the efficiency ofusing different precast concrete panel installation techniques. High density polymer (HDP) foamand flowable fill were selected as the leveling materials after the literature review. The precastpanels were installed using three installation techniques (conventional injection, deep injectionand flowable fill) to study their impact on the performance of the repaired sections characterizedby load transfer efficiency, joint stiffness and deformation energy dissipated through thepavement foundation.Heavy Weight Deflectometer and F-15 gear simulator were used to determine thestiffness properties and accumulation of plastic deformations after each load interval. Decay ofjoint stiffness and load transfer efficiency as well as increase in deformation energy werecalculated as a function of the number of load applications. The results indicate significantincrease in the deformation energy and considerable loss of joint stiffness with number of loadapplications for slabs installed using flowable fill. Precast slabs installed with HDP foamperformed better than those installed using flowable fill. HDP deep injection installed slabsperformed better than those installed with HDP conventional method. This study suggests thatprecast concrete panels leveled with high density polyurethane foam and installed using deepinjection method performed best compared to other design permutations.
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