Hot Bituminous Pavement QC&QA Projects Constructed in 1997 Under QPM 2 Specifications PDF Download

Author: Bud A. Brakey
Publisher:
ISBN:
Category : Pavements, Bituminous
Languages : en
Pages : 60

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Author: Bud A. Brakey
Publisher:
ISBN:
Category : Pavements, Bituminous
Languages : en
Pages : 76

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Book Description
This report presents Tables and Figures which summarize the HBP Quality Level Analysis (QLA) for projects completed in 1996, the second season using the latest significant revision to the 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 1.3 percentage points in 1996 over 1995. But the incentive/disincentive payments were not sufficient to cause some of the contractors to improve their process control. Both, the better and porrer performing contractors show up with similar rankings from year to year. The QLA specifications essentially are serving satisfactorily. Implementation: The PF formulas were modified for the 1997 season so as to make the pF continuous in relation to the QL, rather than in steps as has been the procedure. It is suggested the methods of applying weight factors to the element QL's for PF calculations be reviewed for possible changes. Some other changes in the specification and computer software are needed.

Author: Eric Chavez
Publisher:
ISBN:
Category : Pavements, Bituminous
Languages : en
Pages : 246

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Author: Bud A. Brakey
Publisher:
ISBN:
Category : Pavements, Bituminous
Languages : en
Pages : 90

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Book Description

Author: Bud A. Brakey
Publisher:
ISBN:
Category : Pavements, Bituminous
Languages : en
Pages : 98

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Book Description
Summaries and analyses of three Void Acceptance (VA) projects are reported and compared with previous VA and quality assurance and quality control (QA & QC) projects. For two of the three projects, the voids filled with asphalt (VFA) averaged 77% (design criteria was 65-75%) and percent air voids (AV) averaged 3.2% (design target was 4.0%). Because compacted bulk specific gravity field tests were higher than lab-mixed design values, for all processes, field AV and voids in mineral aggregate (VMA) averaged 0.4% below design values. VMA was easily met after field targets were adjusted.

Author: Bud A. Brakey
Publisher:
ISBN:
Category : Pavements, Bituminous
Languages : en
Pages : 92

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Book Description
In 1993, the Colorado Department of Transportation (CDOT) recognized that specifying HBP volumetric properties would likely provide superior pavements. A long range goal was set for acceptance to be based on voids properties. Beginning in 1993, a series of void acceptance (VA) pilot projects were let to contract; by the end of 1996, nine had been completed. Six had conventional mix designs. The last three were designed using Superpave technology. The data for the nine VA projects are summarized and compared with data from concurrent CDOT projects under Quality Level Analysis (QLA).

Author: United States. Defense Logistics Agency
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 68

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Author: David Dean
Publisher: Cambridge University Press
ISBN: 9780521521857
Category : History
Languages : en
Pages : 342

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Book Description
The years leading up to this book's publication had seen a re-assessment by historians of the Elizabethan parliament. David Dean's book contributed to this development by offering the first detailed account and analysis of the legislative impulses of the men attending the last six parliaments of Elizabeth's reign. Examining a wide range of social and economic issues, law reform, religious and political concerns, and affairs both national and local, Law-Making and Society in Late Elizabethan England addresses the importance of parliament both as a political event and as a legislative institution. David Dean draws on an array of local, corporate and personal archives, as well as parliamentary records, to reinterpret the legislative history of the period.

Author: Arvid Landva
Publisher: ASTM International
ISBN: 0803112858
Category : Aguas subterráneas
Languages : en
Pages : 376

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Book Description

Author: Divya Arora
Publisher: Springer
ISBN: 3030046753
Category : Science
Languages : en
Pages : 234

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Book Description
This book deals with the noteworthy advancement in the production of bioactive metabolites from microbes and their pharmacological significance. It highlights the pharmacological potential of marine microbes and endophytic fungi and their bioactive secondary metabolites. Emphasis is also given on the significance of probiotics and their specialized molecules in human health and disease as well as their role in dietary intervention for reducing the risk of non-alcoholic fatty liver disease. This work also serves as excellent reference material for researchers, students and academicians in the field of natural product chemistry, pharmacology and applied microbiology.