WIKA Beton supplies PC Sleepers with ballastless track type for the Ijo Tunnel project with a length of 581 meters and a diameter of 9 meters.
The Ijo Tunnel is part of the Double-Track Railway Construction Project of South Java II, located in Kebumen, Central Java. Penetrating the limestone hills of Malang Mountain, this tunnel is one of the longest active railway tunnels in Indonesia.
This ballastless track type railway sleepers has several advantages, they are:
- Anti-vibration system on the fastening function to reduce vibrations that occur when the train passes, so the train remains comfortable when crossing the tunnel.
- The use of conventional ballast The use of conventional ballasts using aggregates (gravel) can be replaced with a more stable concrete slab , so that the cost of maintaining the lower structure can be reduced.
The product was produced in October - November 2019 and has passed the Feasibility Test (Static Test and Bearing Dynamic Test) in April 2020.