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- W2097548297 abstract "Statistical specifications for highway construction are usually part of a statistical quality control process. These specifications provide the means to measure the important quality control attributes and ensure their compliance. The pay adjustments, part of these specifications, reflect the amount of deduction or bonus and the optimized risk distributed between the owner and the contractor. The Kansas Department of Transportation (KDOT) has built a comprehensive database of as-constructed properties of materials for Superpave pavements from the tests required as part of the Quality Control/Quality Assurance (QC/QA) program. Currently, KDOT pays incentives/disincentives for air voids and in-place density for Superpave pavements and thickness and strength for Portland Cement Concrete (PCC) pavements. A practical performance model and a composite index that include air voids, in-place density, asphalt content, and voids in mineral aggregate for Superpave pavements and thickness and strength for PCC pavements, respectively are needed to reflect the factors that affect their performance. The main objectives of this study were to investigate the effect of levels of significance and lot size, and to develop practical performance models and composite index for Superpave and PCC pavements in Kansas. Thirty-five Superpave pavements and 13 PCC projects from six administrative districts of KDOT were selected for this study. Lot-wise comparison showed that QC/QA means are significantly different in most cases. The number of cases with a significant difference in means increases with an increase in significance level. Practical performance models and composite index values from multiple quality characteristics have been proposed as integral parts of performance-related specifications (PRS) for Superpave and PCC pavements in Kansas." @default.
- W2097548297 created "2016-06-24" @default.
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- W2097548297 date "2012-12-01" @default.
- W2097548297 modified "2023-09-26" @default.
- W2097548297 title "Review of Data in Construction Management System (CMS) and Quality Control and Quality Assurance (QC/QA) Databases to Improve Current Specifications for Superpave and Concrete Pavements in Kansas: Part 1" @default.
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