Reconstruction of Concrete Pavements Using Rubblized Bases

Reconstruction of concrete pavements can be performed by fracturing the existing concrete slabs into small pieces in situ and then placing a leveling course and overlay. The fractured slabs provide a firm base for the new pavement. The technique is increasingly used for the reconstruction of concrete pavements where the original slabs are in poor condition. The development and regular use of this method in Pennsylvania is documcntcd. Breaking techniques, leveling techniques and construction considerations are evaluated. Falling weight deflectometer data have been obtained on completed projects, and in stages during the rubblize and overlay process. The impact of the resulting support values on overlay and reconstruction designs is examined.