Next generation crack sealing planning tool for pavement preservation : final report.
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2016-03-01
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Edition:Final report
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Abstract:As one of the most popular preventive maintenance methods, crack sealing and filling (CS/CF) has been widely
used by state highway agencies. Due to stringent highway budgets and the lack of work forces in state highway
agencies, it is urgent that CS/CF, as well as other types of pavement preservation methods, be incorporated in
a pavement management system (PMS). For this purpose, this research project proposed a systematic
framework to study the cost-effectiveness of CS/CF and incorporate CS/CF planning in a PMS. Three key
research objectives have been investigated: 1) to propose an accurate workload estimation method using 3D
laser data and automatic crack detection and crack width measurement method, 2) to propose a quantitative
methodology to objectively evaluate CS/CF effectiveness, and 3) to propose a Fisher-clustering-algorithms-based
pavement segmentation method to partition a pavement network into individual CS/CF projects. The
proposed methodology has been evaluated using different case studies and has demonstrated promising results.
It is hoped this research project will advance the state-of-good-repair practices for asphalt pavement crack
sealing into the next generation to prolong the life of pavements.
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