Capitalizing on Construction Records to Identify Relationships between Construction and Long-term Project Performance: Final Report
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2021-11-01
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Edition:September 2019 – December 2021
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Abstract:TxDOT keeps records of contracted roadway projects in several databases: materials and test records, collected for the quality control / quality assurance program, in the SiteManager (SMGR) database; construction-related information in the Design and Construction Information System (DCIS); and performance measures in the Pavement Analyst (PA) database. The primary objective of this research was to utilize the vast amount of data in these databases to identify relationships between materials and construction records and observed long-term performance of hot-mix asphalt (HMA) pavements. Materials, construction records, and pavement surface conditions were analyzed using traditional regression analysis and new-generation data analysis tools. A few selected projects were also chosen for site inspection. The data analysis shows that binder content, binder grade, and recycled binder content influence a pavement’s performance for a given service life and traffic volume. Site visits of a selected sample of projects showed that some pavements were treated with overlays that were not captured by the DCIS or PA databases. Two recommendations are made for TxDOT to continue to benefit from the findings of this research project. These are to implement the integrated database into a software platform already available to TxDOT Tableau), and to incorporate elements related to maintenance activities into this integrated database.
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