PRACTICAL FIELD INVESTIGATION TO INDICATE COMMON FLEXIBLE PAVEMENT DISTRESSES THAT OCCUR IN THE MALIK MAHMOOD RING ROAD-SULAIMANIYAH CITY
When the top layer of the road defects with time, it is called distresses of the pavement. The causes for
this pavement distress vary as most of the flexible pavement structures are subjected to repeated heavy
traffic loadings and high temperature changes which causes pavement cracking, deformation and
deterioration. The existence of these defects on the road surface makes it uncomfortable and unsafe for
the users, therefore, it should be determined and treated in appropriate ways. This research is conducted
to identify the most common types of flexible pavement distresses which occur in the Sulaimaniyah city,
Iraq, and to find out different reasons behind those distresses along with proposing suitable ways for their
maintenance. The data collection was done in the Malik Mahmood ring road in the Sulaimaniyah city.
The work study is carried out in locations that are subjected only to passenger cars and heavy truck
loadings. Field surveying shows that the most common flexible pavement distresses occurred in the
selected area are various types of cracking, rutting, corrugation, shoving, patches and potholes. Finally,
recommendations on maintenance method are provided to guide the Sulaimaniyah governorate and
municipality on solving the distresses and to have a promising repairing practice for the road network
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