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Hot Bituminous Pavement QC and QA Projects Constructed in 1997 under QPM 2Specifications. Sixth Annual Report

机译:热沥青路面质量控制和质量保证项目于1997年根据Qpm 2规范制定。第六次年度报告

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This report presents Tables and Figures which summarize the HBP Quality LevelAnalysis (QL.) for QC&QA projects completed in 1997, the third season using the current specifications. The Quality Level (QL) for the elements (sieve analysis, asphalt content, and pavement density) and the item composites are summarized. While QL determines Pay Factor (PF), it is also used to rank contractors' performance. The item QL improved in 1997 over 1996. Incentive/disincentive payments were not sufficient to cause some contractors to improve their process control. Both, the better and poorer performing contractors show up with similar rankings from year to year. The QL. specifications essentially are serving satisfactorily. This is the final report in this series.

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