Treviicos South, a subsidiary of the Trevi Group (parent company of Soilmec), is working on a huge project to strengthen the foundation of 5.3 miles of earthen levee so the levee height can be increased from 17 feet to 28 feet. During construction, Treviicos used double-auger Soilmec SR-90 drill rigs and single-auger rotary rigs (a SR-70 and SR-80). Rigs are fitted with special attachments that mechanically break up the soil during drilling and mix it with injected cement grout.
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