TY - JOUR
T1 - Field factors impacting incentives of quality control for performance (QCP) and pay for performance (PFP) specifications for hot-mix asphalt in Illinois
AU - Rivera-Perez, Jose
AU - Huang, John
AU - Al-Qadi, Imad L.
N1 - Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the Illinois Department of Transportation and Illinois Asphalt Pavement Association project: R27-189 Evaluation of Data Trends and Variability in the Quality for Performance (QCP) and Pay for Performance (PFP) Programs. This publication is based on the results from an Illinois Center for Transportation project, "Evaluation of Data Trends and Variability in the QCP and PFP programs". The project was conducted in cooperation with IDOT and the Illinois Asphalt Pavement Association. The authors appreciate the feedback and comments provided by the Technical Review Panel members, including Jim Trepanier (chair), Bill Pine, Dennis Bachman, Kevin Burke III, Dennis Dvorak, Amy Harms, Greg Heckel, Brian Hill, George Houston, Jeff Kern, Brian Pfeifer, Pouya Teymourpour, Laura Shanley, Ryan Sheley, and Tom Zehr. The contributions from Hasan Ozer, Javier García Mainieri and Watheq Sayeh are recognised. The authors confirm contribution to the paper as follows: study conception and design, J. Huang, J. Rivera-Perez, and I. L. Al-Qadi; data collection, J. Rivera-Perez, and J. Huang; analysis and interpretation of results, J. Rivera-Perez, and J. Huang; draft manuscript preparation, J. Rivera-Perez, and I. L. Al-Qadi. All authors reviewed the results and approved the final version of the manuscript. The author(s) do not have any conflicts of interest to declare.
Publisher Copyright:
© 2022 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2023
Y1 - 2023
N2 - Illinois Department of Transportation (IDOT) developed two HMA pay specifications, quality control for performance (QCP) and pay for performance (PFP). These specifications assign pay incentives and/or disincentives based on air voids, voids in mineral aggregate, and in-place density. The paper investigated the pay disincentive sources in QCP and PFP projects. Eleven construction contracts were evaluated during the 2018 construction season. First, on-site field observations of contracts were conducted to HMA production, construction, sampling, coring, and testing procedures. Then quality acceptance data were analyzed. Results indicate mix production, and construction issues were the main cause of pay disincentives to the contractors. The production issues found were related to aggregate quality, handling, variability, and contamination as well uncontrolled mix switches. However, there were cases that which testing issues compromised the contractor’s pay. The issues observed included: sample reheating, lab-gyratory compaction bias, and inconsistent volumetric test weights.
AB - Illinois Department of Transportation (IDOT) developed two HMA pay specifications, quality control for performance (QCP) and pay for performance (PFP). These specifications assign pay incentives and/or disincentives based on air voids, voids in mineral aggregate, and in-place density. The paper investigated the pay disincentive sources in QCP and PFP projects. Eleven construction contracts were evaluated during the 2018 construction season. First, on-site field observations of contracts were conducted to HMA production, construction, sampling, coring, and testing procedures. Then quality acceptance data were analyzed. Results indicate mix production, and construction issues were the main cause of pay disincentives to the contractors. The production issues found were related to aggregate quality, handling, variability, and contamination as well uncontrolled mix switches. However, there were cases that which testing issues compromised the contractor’s pay. The issues observed included: sample reheating, lab-gyratory compaction bias, and inconsistent volumetric test weights.
KW - Hot-mix asphalt
KW - PWL
KW - quality assurance
KW - quality control
KW - statistical quality control
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U2 - 10.1080/14680629.2022.2075787
DO - 10.1080/14680629.2022.2075787
M3 - Article
AN - SCOPUS:85130210578
SN - 1468-0629
VL - 24
SP - 1425
EP - 1439
JO - Road Materials and Pavement Design
JF - Road Materials and Pavement Design
IS - 6
ER -