Durability Assessment of Recycled Concrete for use in New Concrete






1.0 INTRODUCTION AND LITERATURE REVIEW

The U.S. Department of Transportation reported that a goal for fiscal years 2006-2011 would involve improving “DOT-owned or controlled facilities for the benefit of host communities by energy conservation, preventing pollution, recycling, and using recycled products” (Strategic Plan F-Y2). As the need grows for environmentally sustainable work practices, the construction industry seeks ways to reduce or recycle waste from both construction and demolition processes. One of the largest components of building demolition waste is concrete. According to a Federal Highway Administration (FHWA) survey, 41 states currently use recycled concrete in construction, but most of these states limit its use to base or subbase applications. (FHWA, 2003) While this is a positive trend, the use of recycled concrete aggregate (RCA) has greater potential for helping the U.S. DOT meet its environmental stewardship goals.




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