Asphalt surface treatment practice in southeastern United States : [tech summary].

PDFTech ReportSIO No. 30000540LTRC Project No. 12-2PFAsphalt pavementsSurface treatingState of the practicePavement maintenanceSeal coatsOverlays (Pavements)SurveysStatesLouisianaLouisiana Transportation Research CenterAli, HeshamLouisiana Transportation Research CenterUS Transportation CollectionPavement preservation is an approach in enhancing pavement performance using a set of practices that extends the lifeof the pavement and improves safety and ride quality. According to the World Bank\ue2\u20ac\u2122s Pavement Deterioration Model, thecost of returning a pavement to good condition after deterioration may be four times the cost of maintaining it in goodcondition (Shahin, 2005). The results of a Utah Department of Transportation (UDOT) research study showed that it costsless to maintain roads in good condition than in poor condition (Zavitski, et al.). According to the National CooperativeHighway Research Program (NCHRP) Synthesis 223, every dollar spent on preventative maintenance at the correct time ina pavement\ue2\u20ac\u2122s life cycle saves $3-4 in future rehabilitation costs (Geo\uef\uac\u20ac roy, 1996). Later work by Galehouse, Moulthrop, andHicks (2003) showed that future rehabilitation cost savings are $6\ue2\u20ac\u201c10 for every $1 spent on preventative maintenance. Somesurface treatments are e\uef\uac\u20ac ective for maintaining pavements in good condition. They are applied to the entire surface of thepavement and are usually used for pavements with no major structural deterioration. The relatively low cost and simplicity ofthese techniques, besides their e\uef\uac\u20ac ectiveness in extending the life of the pavement and improving performance, has attractedmany agencies into using them. Chip seal, slurry seal, microsurfacing, surface rejuvenation, fog seal, scrub seal, and thinoverlays are among popular surface treatments