A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Assessment of the TxDOT Binder Quality Assurance Program
Most state departments of transportation (DOTs) maintain asphalt quality assurance (QA) programs to ensure that asphalt binders used in the construction of their road system meet specifications stipulated for each project. The Texas Department of Transportation (TxDOT) samples and approves asphalt materials at the source and utilizes these materials in highway projects without consideration of possible changes in properties that may occur between production and use during construction. Historic concern and limited recent data indicate that the binder properties do change, contributing to difficulties during construction operations and poor performance. The primary goal of this project was to evaluate the current TxDOT binder QA program and recommend revisions as necessary toward improving quality. This final report documents an assessment of the current program based on (1) an extensive information search and review that included two detailed surveys of TxDOT districts and nine other state DOTs and (2) results from a comprehensive laboratory testing program that simulated factors that may affect changes in binder properties prior to use. Recommendations for improvement are provided, and these recommendations are evaluated in terms of resource requirements.
Assessment of the TxDOT Binder Quality Assurance Program
Most state departments of transportation (DOTs) maintain asphalt quality assurance (QA) programs to ensure that asphalt binders used in the construction of their road system meet specifications stipulated for each project. The Texas Department of Transportation (TxDOT) samples and approves asphalt materials at the source and utilizes these materials in highway projects without consideration of possible changes in properties that may occur between production and use during construction. Historic concern and limited recent data indicate that the binder properties do change, contributing to difficulties during construction operations and poor performance. The primary goal of this project was to evaluate the current TxDOT binder QA program and recommend revisions as necessary toward improving quality. This final report documents an assessment of the current program based on (1) an extensive information search and review that included two detailed surveys of TxDOT districts and nine other state DOTs and (2) results from a comprehensive laboratory testing program that simulated factors that may affect changes in binder properties prior to use. Recommendations for improvement are provided, and these recommendations are evaluated in terms of resource requirements.
Assessment of the TxDOT Binder Quality Assurance Program
A. E. Martin (author) / E. S. Park (author) / E. Arambula (author) / C. Spiegelman (author)
2003
92 pages
Report
No indication
English
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