Paving and Compaction Widths Bring Productivity to Swiss Jobsite
LANGENTHAL – The A2 motorway connects Basel with the rest of Switzerland. It intersects with a key feeder, the A18, at the Muttenz Sud junction.
That intersection and adjacent roads have been well-maintained but were due for a thorough renovation given they were first constructed in the 1970s. The work is part of a larger A2 rebuilding project, which started in 2017 and is expected to last until the end of 2021.
Handling the project is the ARGE EP Schänzli and the paving portion of the A2-A18 work was a task for Swiss contractor Walo Bertschinger. The company utilised two Ammann AFW 700-3 Large Premium Wheeled Pavers and an Ammann ARP 95 Pivot-Steer Roller to complete the paving.
A key challenge was the segmentation of the work. To maximise traffic flow, transportation officials broke the work into sections and required that each essentially be completed as its own project.
The segmentation made the mobility of the large pavers crucial. “The wheeled pavers provided quick movement between sections,” said Nicola Meier, head of the Walo Bertschinger paving team. The AFW 700-3 has transport speeds of up to 20 km per hour.
Performing the paving work at night was another method for minimising disruptions. Paving was limited to shifts between 8 p.m. and 2 a.m. Night paving is always a challenge, but Ammann’s premium pavers utilise outstanding lighting systems that help crews stay safe and productive.
As on any high-profile job, meeting tight deadlines was essential. This started with reliability – a key benefit of the Ammann pavers and compactor.
The Ammann machines also offered exceptional productivity. The large pavers made quick work of the intersection and adjacent roads by utilising two 750-mm extensions for total paving widths up to 7.5 metres per machine. The pavers worked side-by-side to cover the entire width in a single pass.
The Ammann ARP 95 Pivot-Steer Roller offered exceptional productivity as well. The compactor is able to work at widths of 3070 mm. That is the widest working width of any comparable compactor on the market and proved to be a big time-saver on the project.