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    Statistical Analysis of Hot-Mix Asphalt Pay for Performance versus Quality Control for Performance

    Source: Journal of Transportation Engineering, Part B: Pavements:;2022:;Volume ( 148 ):;issue: 002::page 04022016
    Author:
    Jose J. Rivera-Perez
    ,
    Seunggu Kang
    ,
    Watheq Sayeh
    ,
    Javier Garcia-Mainieri
    ,
    Imad L. Al-Qadi
    ,
    Hasan Ozer
    DOI: 10.1061/JPEODX.0000365
    Publisher: ASCE
    Abstract: Statistical analysis of hot-mix asphalt (HMA) data for quality assurance programs used by the Illinois DOT was conducted. The aim was to quantify the total amount of incentives and disincentives, and distribution of the measured values, variability of HMA test results and identify significant variations between contractor and agency results. Quality control and quality assurance data for construction projects were collected for the 2015–2017 construction seasons and were statistically analyzed using the Mann-Whitney and Levene’s tests. The results indicated that during 2015 and 2016, approximately 44% to 55% of the produced HMA tonnage received disincentives, averaging $20,000 per project, based on 710 projects analyzed. More than 80% of the construction projects showed no significant difference between the quality assurance results reported by the district and contractor quality control results. HMA density was the most frequent pay parameter–caused contractor disincentive, and air void content was the second. The bulk specific gravity test results, which contribute to air void and voids in mineral aggregates, were found to be the most variable and, hence, the main cause of differences between IDOT and contractor laboratory data.
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      Statistical Analysis of Hot-Mix Asphalt Pay for Performance versus Quality Control for Performance

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4282801
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    contributor authorJose J. Rivera-Perez
    contributor authorSeunggu Kang
    contributor authorWatheq Sayeh
    contributor authorJavier Garcia-Mainieri
    contributor authorImad L. Al-Qadi
    contributor authorHasan Ozer
    date accessioned2022-05-07T20:43:12Z
    date available2022-05-07T20:43:12Z
    date issued2022-03-10
    identifier otherJPEODX.0000365.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4282801
    description abstractStatistical analysis of hot-mix asphalt (HMA) data for quality assurance programs used by the Illinois DOT was conducted. The aim was to quantify the total amount of incentives and disincentives, and distribution of the measured values, variability of HMA test results and identify significant variations between contractor and agency results. Quality control and quality assurance data for construction projects were collected for the 2015–2017 construction seasons and were statistically analyzed using the Mann-Whitney and Levene’s tests. The results indicated that during 2015 and 2016, approximately 44% to 55% of the produced HMA tonnage received disincentives, averaging $20,000 per project, based on 710 projects analyzed. More than 80% of the construction projects showed no significant difference between the quality assurance results reported by the district and contractor quality control results. HMA density was the most frequent pay parameter–caused contractor disincentive, and air void content was the second. The bulk specific gravity test results, which contribute to air void and voids in mineral aggregates, were found to be the most variable and, hence, the main cause of differences between IDOT and contractor laboratory data.
    publisherASCE
    titleStatistical Analysis of Hot-Mix Asphalt Pay for Performance versus Quality Control for Performance
    typeJournal Paper
    journal volume148
    journal issue2
    journal titleJournal of Transportation Engineering, Part B: Pavements
    identifier doi10.1061/JPEODX.0000365
    journal fristpage04022016
    journal lastpage04022016-12
    page12
    treeJournal of Transportation Engineering, Part B: Pavements:;2022:;Volume ( 148 ):;issue: 002
    contenttypeFulltext
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