The Use of Recycled Concrete Aggregate in a Dense Graded Aggregate Base Course

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CAIT project no.: 198 RU2773

Fiscal Year: 2006/2007

Status: Final

Rutgers-CAIT Author(s): Thomas Bennert, Ali Maher

External Author(s): Robert Sasor



Recycled concrete aggregate has been used for dense graded aggregate base course since the mid-80’s. Recent research conducted by Rutgers University has indicated that although RCA exhibits superior structural properties, the permeability is very low. Research is needed to investigate how the New Jersey Department of Transportation (NJDOT) can continue to use this valuable recycled material without the detrimental effects of its low permeability. Possible areas of research include pavement design considerations, such as when is permeability not important or a low permeability material is preferable, and possible materials and proportions for blending to increase the permeability.