Development of Updated Specifications for Roadway Rehabilitation Techniques, May 2011

(2011) Development of Updated Specifications for Roadway Rehabilitation Techniques, May 2011. Transportation, Department of


File Size:1MB


As our nation’s highway system continues to age, asphalt maintenance and rehabilitation techniques have become increasingly important. The deterioration of pavement over time is inevitable. Preventive maintenance is a strategy to extend the serviceable life of a pavement by applying cost-effective treatments that slow the deterioration of pavement and extend its usable life. Thin maintenance surfaces (TMSs) are preventive maintenance techniques that can effectively prolong the life of pavement when applied at an opportune time. Common TMSs include bituminous fog seal, bituminous seal coat, slurry seal, cold in-place recycling (CIR), and micro-surfacing. This research project investigated ways to improve Iowa Statewide Urban Design and Specifications (SUDAS) and Iowa Department of Transportation (DOT) documents regarding asphalt roadway maintenance and rehabilitation. Researchers led an effort to review and help ensure that the documents supporting proper selection, design, and construction for asphalt maintenance and rehabilitation techniques reflect the latest research findings on these processes: seal coating, slurry sealing, micro-surfacing, and fog sealing. Full results of this investigation are included in this report and its appendices. This report also presents a summary of the recommendations based on the study results.

Item Type: Departmental Report
Keywords: asphalt maintenance, asphalt rehabilitation, asphalt specifications, bituminous seal specifications, fog seal specifications, micro-surface specifications, seal coat specifications, slurry seal specifications, thin maintenance surfaces, TMS
Subjects: Transportation > Research
Transportation > Design and Construction
ID Code: 11877
Deposited By: Margaret Barr
Deposited On: 10 Jan 2012 17:44
Last Modified: 10 Jan 2012 17:44