Builder’s Concrete capped a December 7 seminar, “The Future of Pavement: Roller Compacted Concrete,” by placing high-density and light-duty RCC for truck and auto parking areas at its headquarters plant, northeast of Indianapolis.
The demonstration saw a tilting drum mixer load zero-slump RCC into dump trucks feeding the machines of seminar cosponsors, Calumet Civil Contractors, Whitestown, Ind., and DeLello & Sons Asphalt Paving, Westfield, Ind.
Calumet Civil placed the 8-in.-thick, high-density portions with a mainline tracked asphalt paver. It spreads dry RCC mixes and finishes the slab in a process similar to a concrete slipforming machine, substituting vibration with compaction. DeLello & Sons crews tackled the 3-in.-thick portions in two steps: placing mixes with a tracked paver suited for asphalt overlays, then finishing with two vibratory drum roller passes. The exercise yielded service-ready RCC pavement on a gloomy day, whose freezing temperatures sustained limited evidence of the season’s first snowfall-and idled central Indiana’s asphalt plants.
The demonstration followed a four-hour seminar and panel discussion, hosted by Builder’s Sales Manager Scott Noel and Quality Control Manager Scott Hall at nearby conference venue. The event drew about 125 transportation agency, design and construction professionals from across Indiana; in the face of escalating petroleum-based binder prices, many have observed or helped advance development of RCC pavement as an alternative to asphalt base layers or full depth sections.
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