| Summary: | Utility Cut Patching (UCP) is a major cause of pavement deterioration in city streets. The streets of the city of Riyadh are no exception. A study was undertaken to investigate factors related to UCP and possibly contributing to pavement deterioration. Existing pavement condition, materials properties of patch and pavement, and geometry of trench were among factors investigated. Pavement deterioration was evaluated by deflection measurements at various points on the patch and existing pavement using falling weight deflectometer. Analysis of the results indicated that deflection at center of patch is the most critical one. Furthermore, deflection readings at various points on the patch indicated the dependency of patch deflection on trench geometry and existing pavement structural conditions. Investigation of patching effects on pavement roughness suggested an increase in roughness of pavement due to UCP.
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