دراسة إعادة التأهيل للممر الحالي لطريق العمارة-تقاطع الطيب الشيب المشرح في محافظة ميسان

الملخص EN

The processes perform maintenance of roads and intersections of different types according to the scientific methodology of the priorities and imperatives that must be followed to minimize failures structural and functional anomalies of the surface of the road, which requires a process of rehabilitation (Rehabilitation) inclusive of the whole section of the road, which requires more cost and effort as well as the time it takes to accomplish.

The study had been done rehabilitation process for the roadway which is started from (Amara-Baghdad intersection) to (Sheeb-Almsharah intersection with length (Km27.50) in order to get cases of failure in most of its parts due to lack of maintenance, based upon the basis of the survey included the condition of the road and areas of failure and the status of the shoulders and the effects on the road as well as the type of traffic used the road, and engineering survey and detailed study of a traffic study included a traffic situation where the study classify the volumes of traffic of the road on the basis of peak-hour traffic (Peak Hour Volume).

The study used a method (Full Depth Asphalt).

(Asphalt Institute Manual Method for Flexible Pavement) to design the thickness of the layers required for the rehabilitation of the road as well as the program was used (Highway Capacity System 2000) to analyze the level of service to the road after rehabilitation.

The study concluded that the thickness of the layers of rehabilitation (85mm) where it is implemented by following steeps :- -Study area is cleaned thoroughly using compressed air.

-Spray (tack coat) under the technical specifications of general authority for road and bridges (SORB).

-Brushes amendments layer thickness (35mm) tacking into a count the tends and levels required.

-Brushes asphalt surface layer thickness (50mm) under the technical specification.

-Brushes sub base layer ranges thick (15-20cm) compacted well in order to address drop the shoulders of the road asphalt layer, level taking into account the required under the technical specifications.

As well as the level of service for the road (LOS) will rise from the level of (E) to the level of (C) when you make the rehabilitation of the road above using the program.

The study recommended the formation of circles specialty concerned with maintenance of traffic available to physical and human resources needed and to be its staff is the experience and skill and professionalism through training and development ongoing as well as the establishment of a database of all by providing the name of the road, kind, date of completion, contract amount, date of last maintenance, cost, type of failure in all, the type of maintenance treatment with a programs, objectives and priorities under the scientific planning standards established for that purpose.