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Author: Shad M. Sargand Publisher: ISBN: Category : Pavements Languages : en Pages :
Book Description
The purpose of this research was to identify flexible and rigid pavements in Ohio with average and above average performance, and determine the reasons for these differences in performance. The identification and implementation of factors linked to extended service life will improve performance statewide. FWD and ride quality profiles were measured to evaluate project uniformity, and material samples were obtained from a selected location on each project and tested in the laboratory to determine material properties. Volume 1 of the report includes: the project selection process, FWD and ride quality data, laboratory results of testing on base, subgrade and asphalt concrete pavement samples, and projected service lives using FWD data and the MEPDG. Volume 2 provides results of the laboratory tests and petrographic examinations of the Portland cement concrete cores. Volume 3 contains petrographic analysis of PCC pavement specimens in Cuyahoga County, Ohio containing Blast Furnace Slag Aggregate. Flexible and rigid pavements in Ohio having no structural maintenance show an average condition rating of 68 after 20 and 30 years of service, respectively. This performance, coupled with the general lack of structural distress observed on pavements selected for study indicates pavement design procedures used in Ohio are meeting expectations. Practices recommended to improve pavement performance include: 1) constructing stiffer and more uniform subgrades to provide better support and minimize localized failures, 2) reducing amounts of Portland cement and using larger aggregate in 451 and 452 concrete, while continuing to screen aggregate for D-cracking susceptibility, 3) increasing emphasis on ensuring that dowel bars maintain proper alignment during PC concrete placement, and 4) continuing the use of performance grading, smaller aggregate and polymers in AC mixes on heavily traveled pavements. Other observations regarding data used to reach these conclusions include: keeping the PMIS database current, retaining construction records for at least the design life of the pavements, being aware that the effect of surface cracks on flexible pavement performance depends upon whether the cracks are top-down or bottom-up, and keeping the PMIS and straight-line diagrams consistent in identifying project limits, project numbers and paving materials.
Author: Shad M. Sargand Publisher: ISBN: Category : Pavements Languages : en Pages :
Book Description
The purpose of this research was to identify flexible and rigid pavements in Ohio with average and above average performance, and determine the reasons for these differences in performance. The identification and implementation of factors linked to extended service life will improve performance statewide. FWD and ride quality profiles were measured to evaluate project uniformity, and material samples were obtained from a selected location on each project and tested in the laboratory to determine material properties. Volume 1 of the report includes: the project selection process, FWD and ride quality data, laboratory results of testing on base, subgrade and asphalt concrete pavement samples, and projected service lives using FWD data and the MEPDG. Volume 2 provides results of the laboratory tests and petrographic examinations of the Portland cement concrete cores. Volume 3 contains petrographic analysis of PCC pavement specimens in Cuyahoga County, Ohio containing Blast Furnace Slag Aggregate. Flexible and rigid pavements in Ohio having no structural maintenance show an average condition rating of 68 after 20 and 30 years of service, respectively. This performance, coupled with the general lack of structural distress observed on pavements selected for study indicates pavement design procedures used in Ohio are meeting expectations. Practices recommended to improve pavement performance include: 1) constructing stiffer and more uniform subgrades to provide better support and minimize localized failures, 2) reducing amounts of Portland cement and using larger aggregate in 451 and 452 concrete, while continuing to screen aggregate for D-cracking susceptibility, 3) increasing emphasis on ensuring that dowel bars maintain proper alignment during PC concrete placement, and 4) continuing the use of performance grading, smaller aggregate and polymers in AC mixes on heavily traveled pavements. Other observations regarding data used to reach these conclusions include: keeping the PMIS database current, retaining construction records for at least the design life of the pavements, being aware that the effect of surface cracks on flexible pavement performance depends upon whether the cracks are top-down or bottom-up, and keeping the PMIS and straight-line diagrams consistent in identifying project limits, project numbers and paving materials.
Author: Gonzalo R. Rada Publisher: Transportation Research Board ISBN: 0309283450 Category : Pavements Languages : en Pages : 162
Book Description
"TRB's National Cooperative Highway Research Program Report 747: Guide for Conducting Forensic Investigations of Highway Pavements explores a process for conducting forensic investigations of pavements that is designed to help understand the reasons behind premature failures or exceptionally good performance. The process also allows for the collection of data for use in developing or calibrating performance-prediction models. The report includes example forms and checklists for use during the conduct of an investigation. These forms can be modified to suit the particular requirements and procedures for the agency. The example forms are included with the print version of the report in CD-ROM format." --Publisher description.
Author: Shad M. Sargand Publisher: ISBN: Category : Pavements Languages : en Pages : 264
Book Description
The US Route 30 bypass of Wooster, Ohio, in Wayne County, "WAY-30", was constructed to demonstrate two types of extended service pavements, a long-life Portland cement concrete (PCC) pavement on the eastbound lanes and an asphalt concrete (AC) perpetual pavement on the westbound lanes. Both pavements are designed to provide 50 years or more of service with minimal maintenance (e.g. resurfacing). The PCC pavement structure features a thick and extra-wide slab on an asphalt treated base, while the AC pavement structure features a Superpave surface and a Fatigue Resistant Layer (FRL). Two sections in each direction were instrumented with pressure cells to monitor subgrade pressures and deep and shallow LVDTs to record pavement deflections. The AC test section also had transverse and longitudinal strain gages. A weather station was also used to monitor environmental conditions. Nondestructive testing of the subgrade was conducted prior to pavement placement. Pavement materials and samples were tested in the laboratory to determine material parameters. Controlled vehicle load and falling weight deflectometer tests were applied to the AC pavement shortly after the road opened to traffic in December 2005 and again under hot weather conditions in July 2006. Similar tests on the PCC pavement were conducted in December 2005 and August 2006. The response on both types of pavement met their respective design criteria. A verification analysis of the AC pavement response using the elastic layer system (ELS) simulation using material properties derived from laboratory and field sample data yielded unsatisfactory matches, suggesting that some refinement of the approach is needed
Author: Shad M. Sargand Publisher: ISBN: Category : Pavements Languages : en Pages : 0
Book Description
Objective: Over the years, the Ohio Department of Transportation has constructed several pavements with a range of designs and materials to study and improve overall statewide performance. These pavements require constant monitoring to determine how they perform over time and what mechanisms are at work to cause distress. One major effort was the DEL-23 Test Road where 40 AC and PCC test sections in the SPS-1, SPS-2, SPS-8 and SPS-9 experiments were constructed for SHRP. While many sections have been replaced, many other sections remain in service. These remaining sections and seven PCC replacement sections need to be evaluated periodically. Other existing test roads around the state also need ongoing evaluation to assess performance, including in particular the perpetual AC pavement and long-life PCC pavement in Wayne County (WAY-30).
Author: American Association of State Highway and Transportation Officials Publisher: AASHTO ISBN: 156051423X Category : Pavements Languages : en Pages : 218
Author: American Society of Civil Engineers Publisher: Amer Society of Civil Engineers ISBN: 9780784411049 Category : Technology & Engineering Languages : en Pages : 592
Book Description
Pavement Design And Paving Material Selection are important for efficient, cost effective, durable, and safe transportation infrastructure Paving Materials and Pavement Analysis contains 73 papers examining bound and unbound material characterization, modeling, and performance of highway and airfield pavements. The papers in this publication were presented during the GeoShanghal 2010 International Conference held in Shanghai, China, June 3-5, 2010.
Author: Shiraz D. Tayabji Publisher: ISBN: Category : Entrepreneurship Languages : en Pages : 184
Book Description
"TRB's second Strategic Highway Research Program (SHRP 2) Report S2-R05-RR-1: Precast Concrete Pavement Technology reviews the available precast concrete pavement (PCP) systems; summarizes PCP applications; and offers suggested guidelines for the design, fabrication, installation, and selection of PCP systems. " -- Publisher's description.
Author: Y. Richard Kim Publisher: CRC Press ISBN: 1315736756 Category : Technology & Engineering Languages : en Pages : 1966
Book Description
Asphalt Pavements contains the proceedings of the International Conference on Asphalt Pavements (Raleigh, North Carolina, USA, 1-5 June 2014), and discusses recent advances in theory and practice in asphalt materials and pavements. The contributions cover a wide range of topics:- Environmental protection and socio-economic impacts- Additives and mo
Author: American Association of State Highway and Transportation Officials Publisher: AASHTO ISBN: 1560510552 Category : Pavements Languages : en Pages : 622
Book Description
Design related project level pavement management - Economic evaluation of alternative pavement design strategies - Reliability / - Pavement design procedures for new construction or reconstruction : Design requirements - Highway pavement structural design - Low-volume road design / - Pavement design procedures for rehabilitation of existing pavements : Rehabilitation concepts - Guides for field data collection - Rehabilitation methods other than overlay - Rehabilitation methods with overlays / - Mechanistic-empirical design procedures.
Author: Shad M. Sargand
Author: Shad M. Sargand
Author: Gonzalo R. Rada
Author: Shad M. Sargand
Author: Shad M. Sargand
Author: American Association of State Highway and Transportation Officials
Author: American Society of Civil Engineers
Author: Shiraz D. Tayabji
Author: Y. Richard Kim
Author: American Association of State Highway and Transportation Officials
Author: United States. Joint Chiefs of Staff