Pavement Recycling: Shrinkage Crack Mitigation in Cement-Treated Pavement Layers – Phase 1 Laboratory Testing

Project Details
STATE

CA

SOURCE

TRID

START DATE

10/01/14

END DATE

09/30/15

RESEARCHERS

Kayhanian, Masoud

SPONSORS

National Center for Sustainable Transportation, Caltrans, MnDOT, FHWA

KEYWORDS

Best practices, Hydraulics, Pavement performance, permeability, Runoff, Sustainable transportation, Water quality

LINKS

Products

Project description

The California Department of Transportation (Caltrans) has been using full-depth reclamation (FDR) as a rehabilitation strategy since 2001. Most projects to date have used a combination of foamed asphalt and portland cement as the stabilizing agent. Recently though, the fluctuating and at times high cost of asphalt binder coupled with the relatively complex mix-design procedure for mixes that include foamed asphalt has generated interest in the use of portland cement alone as an alternative stabilizing agent. However, shrinkage cracking associated with the hydration and curing of the cement-treated layers remains a concern, especially with regard to crack reflection through asphalt concrete surfacings and the related problems caused by water ingress.
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