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Ammann ARS 122 Outshines the Competition Compactor Excels on Embankment Project

Ammann ARS 122 Outshines the Competition Compactor Excels on Embankment Project

Categories: SOIL AND ASPHALT COMPACTORS

An Ammann ARS 122 Soil Compactor outperformed machines from seven competitive manufacturers when tested on a jobsite in Giriulla, Sri Lanka.

The eight compactors worked on embankment construction as part of the Central Expressway project. The 10-tonne machines were tested while compacting aggregates on the embankment’s base course, and the Ammann machine performed the best.

“This Ammann roller is the most effective for compaction efficiency, number of passes and test pass percentages,” said Rohana Eknathgedara, chairman of S&K Engineering Enterprises (Pvt.) Ltd.

The other manufacturers’ compactors each required six passes to reach density targets, while the Ammann ARS 122 was able to reach the same targets in four or five passes.

“It’s highly effective,” Eknathgedara said of the Ammann machine. “The compactibility is high and with fewer passes. The time required between layer compaction, testing and starting on a new soil layer is less than the other rollers, too.”

The ARS 122 proved it could eliminate passes, thereby eliminating labor and fuel costs.

While making the most of available time is always important, it was particularly crucial on the Central Expressway project. “Weather is the most dominant challenge when taking on large earthwork and the quantities of materials required,” Eknathgedara said.

The ARS 122 operated at its highest vibratory setting while helping to compact approximately 200 000 m3 of materials associated with the embankment earthwork. Materials were loosely placed in layers of 225 mm before the compactors went to work.

The Central Expressway project will connect the Sri Lankan capital of Colombo with Kandy, another key city. The embankment work is part of the second of four project phases. That second phase is the creation of 50.7 km of a four-lane, divided carriageway with 30 overpasses and five underpasses.

The project will continue into 2019.

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