Abstract
The Georgia Department of Transportation (GDOT) has obtained favorable results from the initial use of cement-stabilized reclaimed base (CSRB) in a pilot full-depth reclamation (FDR) in rural southeast Georgia. CSRB is produced when portland cement is added to sand-clay base from an FDR, and it is used to underlie hot-mix asphalt. GDOT initiated its first FDR in 2004 on County Road (CR) 52 in Long County. A 4.8-km corridor of CR 52 was overlain with a 12.5-mm Superpave® mix, including a 1.8-km section reconstructed with FDR. Samples of the in situ sand-clay base and pavement were obtained for a mix design to determine if these materials would react satisfactorily with portland cement. With the same laboratory design strength requirement for a soil-cement base, the desired level of unconfined compressive strength was obtained at 6% cement. A provisional specification for CSRB was developed, and a 152-m trial section of 12.5-mm mix over CSRB was constructed in July 2004. Construction procedures were adjuste...
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Schedule a callMore From: Transportation Research Record: Journal of the Transportation Research Board
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