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Recycled Concrete John Schuler, PE George Filz, PhD, PE Program Manager Professor Virginia DOT Materials Division Virginia Tech October 31, 2011. Industry through VTCA Aggregates Committee brought to VDOT’s attention
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Recycled Concrete • John Schuler, PE George Filz, PhD, PE • Program Manager Professor • Virginia DOT Materials Division Virginia Tech • October 31, 2011
Industry through VTCA Aggregates Committee brought to VDOT’s attention • Contractors seeking to use stockpiles of CHCC on VDOT jobs (HR, Albemarle, Richmond) • Requires not only gradation, but source property testing
CO Mat’ls working up draft language for Materials MOI and to put current SP into Spec Book - SP S208B00-0708 • VIRGINIA DEPARTMENT OF TRANSPORTATION • SPECIAL PROVISION FOR • CRUSHED HYDRAULIC CEMENT CONCRETE (CHCC) • (USED AS SUBBASE AND AGGREGATE BASE MATERIAL) • January 14, 2008c • Goal: Ensure same requirements for CHCC as for virgin aggregate; ensure proper use on project • For now, will not change requirement of not using where have underdrain due to leachate clogging geofabric