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Chile: use of sustainable techniques in the desert

Bitumix teams have been active at Pozo Almonte (in northern Chile), in the Tarapacá desert, which is one of the most arid deserts in the world. This long plateau, where it almost never rains, is criss-crossed by several roads, including A653, which Bitumix upgraded from June to December 2014 for the Chilean government’s public works department. The teams levelled road-surface fluctuations using a granular base, stabilized the existing roadway with a 20-centimetre layer of foamed bitumen with added materials to correct the roadway’s topographic profile, and applied twin layers of a polymer-modified emulsion (PME).
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