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USING EXISTING PAVEMENT IN PLACE (R23)
Web-based scoping tool and easy-to-follow Project Assessment Manual with model specifications and case studies for incorporating existing pavements into rapid renewal road construction projects.
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The new guide identifies the optimal conditions for using existing pavements and the best approaches for ensuring they last longer when they are incorporated. These pavements have the potential to serve 50 years and can reduce the need for more costly and time-consuming reconstruction projects using all new materials. The end results are longer-lasting pavements that cost substantially less, use substantially less new material, and can be constructed more quickly.
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The Pavement Design Life guide will be expanded to include solutions that provide 30 to 50 year life. Guidelines and other new information from projects R05 and R21 will be incorporated into the tool. The Washington State DOT estimates it will realize a 30% cost savings over the life of the new pavement and a 50% reduction in user delay by applying this method.
The final report is available at www.trb.org/Main/Blurbs/168146.aspx.
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