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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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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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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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EPA RainWorks Challenge

Environmental Protection Agency ’s fourth annual Campus RainWorks Challenge compels undergraduate and graduate student participants to design green infrastructure systems to reduce stormwater pollution. Such systems include permeable pavement materials, rain-harvesting vessels and vegetated green roofs. Along with companion practices, EPA notes, they decrease pollution to local waterways by treating rain where it falls and keeping polluted stormwater from entering sewer systems; increase economic activity, neighborhood revitalization, job creation and open space; and, reduce local water infrastructure burden, urban heat island effect and energy consumption.

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