Tabarja, Chekka Highway
The two major cities of Lebanon, Beirut and Tripoli, are linked with a highway located along the coast. It acts as one of the major economical transport links in the country. Years of use and abuse led to the severe deterioration of the asphalt layers. In an attempt to increase the design life of the layers the cold recycling method was investigated rather than a traditional asphalt overlay rehabilitation option.
Lebanon is a pocket country that is located in the eastern coast of the Mediterranean Sea. Due to the lack of vital natural resources such as oil, gas, or gold mines the main source for income of this country is tourism. Post-war reconstruction and rehabilitation of the road network with the length of 4,000 km was taken over by the Council for Development and Reconstruction (C.D.R). 25 years of civil war which hurt this country and due to the non-existing maintenance of the road network, the governors took into consideration the use of the recycling technology to protect the country’s natural resources during rehabilitation projects.
Loudon International was involved with various investigations along the route and varying designs were established for different sections of the route. A constant BSM layer thickness of 250mm was proposed followed by an asphalt overlay in two layers of 130mm total thickness. The project time was 6 months during which 660,000 square meters were recycled. The foam bitumen technology proved to be a fast, cost effective, reliable, and environment friendly solution for the future of this road considering the increasing traffic load.