NEM Construction, based in the Sri Lankan capital Colombo, recently completed compaction work on an extension of the southern expressway from Matara to Beliatta. The new road is 30 km long and 25 m wide, connecting key urban hubs and providing access to the international airport in Colombo.

“A challenging construction schedule was prepared to meet the target deadlines, and on top of that, we had to contend with severe weather conditions during construction,” explained Raja Nanayakkara, chairman of NEM.

Handling asphalt compaction on the project were four Ammann AP 240 pneumatic tyred rollers. The machines carried out both intermediate and finish compaction. Ballast was adjusted to provide a proper weight distribution during the two stages of compaction. Ammann’s convenient air-on-the-run system also enabled tyre pressure to be adjusted from the cab.  

Speaking about the benefits of the AP 240 rollers, Mr Nanayakkara said, “It’s a heavy-duty machine that’s easy to operate. It minimises the operating time through the power steering and automatic transmission. The braking system is efficient, and visibility is good. The driving positions can be switched easily.”

Excellent ground access makes maintenance points easy to reach, minimising labour and reducing the likelihood of fluid spills. Ultimately, all the efficiencies offered by the rollers helped NEM meet the project’s deadline.

“Competition among contractors to secure the limited number of projects available in the market is one of the biggest challenges we face,” said Mr Nanayakkara. “We separate ourselves from the competition by completing projects in a timely fashion, using eco-friendly methods and delivering the best quality that meets the employer’s requirements.”