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Trimble paving machine control speeds trains, cuts wasted mix volumes

18 Trimblei 150Trimble Civil Engineering & Construction Division’s PCS900 Paving Control System Version 2.2 enables Gomaco Corp. and Guntert & Zimmerman-equipped contractors to precisely steer concrete placer/spreader machines and set slab elevation according to a 3D model. The resulting alignment eliminates labor requirements attending machine guidance through manual or slab edge string line methods, and accelerates concrete mix spread rate.

 

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Report: Roughness Index succeeding profilograph in pavement parameters

17 Report 150A new Louisiana Transportation Research Center (LTRC) report tracks a major transition in current U.S. concrete and asphalt pavement smoothness requirements. “Best Practices for Achieving and Measuring Pavement Smoothness, A Synthesis of State-of-Practice” shows a growing number of states moving away from profilograph-based specifications in favor of those determined on a more widely-accepted and precise measure: the International Roughness Index (IRI).

 

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FlaDOT cashes in on Oldcastle Precast’s competitive toll conversion solution

16 Oldcastle 150The Oldcastle Precast plant in Newnan, Ga., provided 50-plus turnkey toll equipment shelters for the Florida Department of Transportation’s expressway toll conversion projects. The agency plans to shift all mainline plazas to All Electronic Toll—AET, a no-cash tolling gantry system—along state expressways.

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CRH Names Finance Chief

Dublin-based CRH Plc has appointed Senan Murphy as group finance director, effective January 2016, succeeding Maeve Carton, who will become group transformation director. Both will be members of the Group Board.

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Mineral technology, machinery developer taps clays’ geopolymer binder potential

15 Watershediii 150A National Science Foundation-backed building materials technology startup, Watershed Materials in Napa, Calif., reports a high-strength masonry unit production process using natural mineral-based geopolymers. Recently identified reactive compounds allow for molding universally available clays into what the company contends is a sustainable alternative to conventional concrete masonry.

 

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