This report contains a manual for the in-service inspection of fiber reinforced polymer (FRP) bridge decks. Documentation of the research leading to the development of the inspection manual is also included. The material in this report will be of immediate interest to FRP bridge inspectors, designers, and owners.
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Aggregate Tests for Hot-Mix Asphalt Mixtures Used in Pavements
Author: White, Thomas D | Size: 1.91 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2006 | pages: 46 | ISBN: 0309098602
This report presents recommendations for performance-based procedures to test aggregates for use in pavements utilizing hot-mix asphalt (HMA) mixtures and provides guidance on using these procedures for evaluating and selecting aggregates for use in specific mixture applications. This information will guide materials engineers in selecting the aggregates that should contribute to well performing pavements; this information can also be used in conjunction with performance-related specifications. The content of this report will be of immediate interest to materials engineers, researchers, and others concerned with the construction and performance of HMA pavements.
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Best-Value Procurement Methods for Highway Construction Projects
Author: Scott III, Sidney | Size: 2.54 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2006 | pages: 214 | ISBN: 0309098580
This report contains tools for use in awarding best-value highway construction contracts. This report will be of immediate interest to professionals involved in the procurement of highway construction contracts. Under a best-value selection process, the low-bid concept can be modified by adding quality issues to the bid evaluation process. A best-value bid award system can provide a means for both public- and private-sector organizations to achieve common objectives and to include quality in the competitive procurement process.
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Manual on Service Life of Corrosion-Damaged Reinforced Concrete Bridge Superstructure Elements
Author: Sohanghpurwala, Ali Akbar | Size: 1.91 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2006 | pages: 69 | ISBN: 9780309098625
This report is a manual that provides step-by-step procedures for assessing the condition of corrosion-damaged bridge elements. It also includes procedures that can be used to estimate the expected remaining life of reinforced concrete bridge superstructure elements and to determine the effects of maintenance and repair options on their service life. This manual should be of interest to state engineers and others involved in the design, construction, and maintenance of highway bridges.
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Riprap Design Criteria, Recommended Specifications, and Quality Control
Author: Lagasse, P F | Size: 12.24 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2006 | pages: 125 | ISBN: 9780309098663
This report presents the findings of a study to develop design guidelines, material specifications and test methods, construction specifications, and construction, inspection, and quality control guidelines for riprap at streams and riverbanks, bridge piers and abutments, and bridge scour countermeasures. Recommendations are provided on a design equation or design approach for each application. Filter requirements, material and testing specifications, construction and installation guidelines, and inspection and quality control procedures are also recommended for each riprap application. To guide the practitioner in developing appropriate designs for riprap armoring systems for these applications, the findings and recommendations are combined to provide design guideline appendixes for (1) Design and Specification of Rock Riprap Installations and (2) Construction, Inspection, and Maintenance of Rock Riprap Installations. This report will be particularly useful to bridge, hydraulic, and highway engineers, as well as bridge maintenance and inspection personnel responsible for design, construction, inspection, and maintenance of bridges and other highway structures.
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Author: Christensen Jr, Donald W | Size: 1.28 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2006 | pages: 54 | ISBN: 9780309098670
This report presents the findings of two coordinated research projects that investigated whether changes to the recommended Superpave mix design criteria for voids in mineral aggregate, voids filled with asphalt, and air voids content might further enhance the performance and durability of hot mix asphalt. Its main finding is that, based on an evaluation of the performance properties of hot mix asphalt, major revisions to these volumetric criteria are not needed, although some refinements are possible. The report will be of particular interest to materials engineers in state highway agencies, as well as to materials suppliers and paving contractor personnel responsible for the specification and production of hot mix asphalt.
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This report presents guidance for the selection of best management practices (BMPs) for highway runoff control. These practices provide means of avoiding or mitigating the negative impacts of various pollutants that can be carried by rainfall into the groundwater and receiving waters. These pollutants include materials discharged by vehicles using the highway system, pesticides and fertilizers from adjacent landscapes, and particulates from breakdown of the pavements themselves. BMPs include the traditional treatments applied at or near the sources of the pollutants and a more distributed approach known as low-impact development (LID). This report should be a valuable resource for all highway agencies that must evaluate and select the most effective and efficient means of managing pollution related to stormwater from highways.
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This guidebook presents approaches to cost estimation and management to overcome the root causes of cost escalation and to support the development of consistent and accurate project estimates through all phases of the development process, from long-range planning, through priority programming, and through project design. A research team led by the Texas Transportation Institute carried out a comprehensive investigation into current and effective practices for cost estimation and management during the various planning and project development phases prior to construction. The project resulted in this practical guidebook. The guidebook should be of significant use to managers, practitioners, and decision makers interested in development and management of realistic and accurate cost estimates for transportation projects from the earliest stages of planning through final project design. The guidance provided is intended to provide methods and tools that will reduce unintended or unanticipated escalation of costs as transportation projects proceed through the development process.
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Design of Construction Work Zones on High-Speed Highways
Author: Mahoney, Kevin M | Size: 3.49 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2007 | pages: 75 | ISBN: 9780309098793
This report explores an approach for the selection of an appropriate construction work zone type; offers suggested guidance for the design of geometric features, including horizontal and vertical alignment, cross-sectional features, and barrier placement; and examines a variety of ancillary features such as drainage systems, lighting, and surface type. The contractor's final report on the research activities used to develop this report has been published as NCHRP Web Document 105. As part of the research associated with this activity, a work zone prediction model and user's guide were created to help estimate free-flow vehicle speeds through two types of construction work zones on four lane freeways--single lane closures and median crossovers. This report will be of particular interest to practitioners responsible for the design of construction work zones.
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This report presents guidelines for the selection of snow and ice control materials through an evaluation of their cost, performance, and impacts on the environment and infrastructure. The guidelines should be useful in helping maintenance managers develop a program that will minimize the environmental impacts of snow and ice control without compromising effective maintenance strategies. The guidelines will help highway agencies fill their dual role of providing safe roadways for the driving public while serving as stewards to protect and enhance the natural environment.
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