A Linnhoff TSD1500 mobile asphalt plant has made remarkable progress on a large-scale African road project, the drop in the Tema highway interchange. The interchange roundabout had confused motorists with its severe traffic jams that often exceeded 1 km during rush hour, and had become an urgent issue for the government to resolve. The âGhana International Corridor Improvement Projectâ was therefore implemented – one of the priority projects proposed in the âWest Africa Growth Ring Corridor Master Planâ. A grant of US $ 57 million from the Japan International Cooperation Agency (JICA) soon followed to help this project.
The Tema motorway interchange, Ghana’s largest port city, forms the crossroads of two of the country’s busiest international corridors: National Route 1 (N1), which runs along the Ghanaian coast almost to its border with the CÃ´te d’Ivoire and Togo, and, in the far east, the national road 2 (N2), its main north-south highway that leads to the border with Burkina Faso.
In February 2018, work on the Tema motorway interchange began, transforming the roundabout into an interchange with an underpass, the construction of a 2.1 km three-lane carriageway with a 730 m underpass on the N1 and the improvement of 1.9 km of roadway on the N2. It also included the paving of five service lanes and eight ramps for right-hand traffic, a 190 m long box culvert underpass, four pedestrian bridges adapted for people with disabilities, traffic lights, public lighting and other safety essentials.
Linnhoff’s MobileMix TSD1500 asphalt plant regularly produced 100 to 120 tonnes of hot mix per hour, playing a crucial role in keeping the project on track. In total, it produced around 52,000 tonnes of hot mix for the construction of a total of 150,000 m2 of asphalt structures, intended for use in the base, binder and wearing courses.
The plant’s unique dual-function screening drum technology allows both drying and screening of aggregates to be processed in the same drum, eliminating the need for a hot elevator and vibrating screens. Not only does this reduce fuel consumption and emissions, but maintenance is also easier, reducing costly downtime.
The four main mobile modules that make up every Linnhoff TSD MobileMix concrete batching plant are pre-assembled at the factory, before undergoing rigorous test cycles to ensure a smooth installation once they reach the job site. And, being equipped with a hydraulic auto-jacking support system, it is not necessary to use large cranes for the installation and dismantling processes, which means that the operation of the plant can start faster.
By offering significant advantages in terms of improved mobility, the Linnhoff TSD series is ideal for use in remote locations or short term projects. After work on the Tema intersection was completed, the plant was moved to the National Trunk Road N8 site. The mobility of the factory is extremely beneficial, especially when the entrepreneur moves on to different projects, explained Teo Siang Leong, General Manager (Sales), Lintec & Linnhoff Asphalt Pte Ltd.
According to B&FT Online, improvements to the Tema motorway interchange should reduce the 20-minute delay that motorists used to experience at the old roundabout by 15 minutes. It would also improve the capacity, safety and efficiency of transport and freight generated in Tema, Ghana’s largest port city.
This high-quality road infrastructure will lead to significantly improved logistics to and from the port of Tema, stimulating trade with neighboring countries. It will bring a brighter future to everyone in the region, contributing not only to Ghana’s economic growth, but also to the economic development of West Africa as a whole.