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Evaluation Of Mmfx 2 Steel Corrosion Resistant Dowel Bars In Jointed Plain Concrete Pavement
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Book Synopsis Evaluation of MMFX 2 Steel Corrosion-resistant Dowel Bars in Jointed Plain Concrete Pavement by : Irene K. Battaglia
Download or read book Evaluation of MMFX 2 Steel Corrosion-resistant Dowel Bars in Jointed Plain Concrete Pavement written by Irene K. Battaglia and published by . This book was released on 2008 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Alternative Dowel Bar Materials and Coatings by : Roger M. Larson
Download or read book Evaluation of Alternative Dowel Bar Materials and Coatings written by Roger M. Larson and published by . This book was released on 2011 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The inclusion of steel dowel bars to transfer forces across sawed or formed transverse joints from one concrete pavement slab to another while permitting expansion and contraction movements of the concrete has been a basic design practice in most U.S. state departments of transportation (DOTs) for many decades. However, corrosion of the steel dowels remains a common problem, especially in states that use salt and other caustic deicing chemicals for snow and ice control. Significant corrosion reduces the effective diameter of the dowel bar in the joint, often to the point where the dowel bar will fail in shear when loaded, resulting in faulting of the pavement slab. Furthermore, the corrosion can also "lock" the dowel bar into the concrete, preventing movement of the concrete during expansion and contraction and thereby leading to the development of cracking in the adjoining slabs. In the mid-1970s, state DOTs began to require that steel dowel bars be coated with epoxy or other materials to prevent corrosion, and epoxy-coated dowels became the standard for most states. Recently, a number of different alternative dowel bar materials have emerged, seeking to combine effective load transfer capabilities with enhanced corrosion resistance. While the corrosion resistance of some alternative materials have been well documented in laboratory examinations, other performance characteristics affecting service life remain to be fully evaluated, particularly in representative field installations and over meaningful time periods.
Book Synopsis Laboratory evaluation of corrosion resistance of steel dowels in concrete pavement, draft by :
Download or read book Laboratory evaluation of corrosion resistance of steel dowels in concrete pavement, draft written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book WisDOT Research Program written by and published by . This book was released on 2008 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laboratory Evaluation of Corrosion Resistance of Steel Dowels in Concrete Pavement by :
Download or read book Laboratory Evaluation of Corrosion Resistance of Steel Dowels in Concrete Pavement written by and published by . This book was released on 2007 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Alternative Dowel Bar Materials and Coatings by : Roger M. Larson
Download or read book Evaluation of Alternative Dowel Bar Materials and Coatings written by Roger M. Larson and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study provided for a continuation of the long-term performance evaluation of 1.5-in (38-mm) diameter FRP dowels and Type 304 stainless steel solid dowels or mortar-filled tubes compared to epoxy-coated dowels. This primarily included an evaluation of load transfer efficiency (LTE) based on FWD testing, but also included a limited evaluation of faulting and ride. In addition, some FWD testing and coring was conducted on older projects (15 to 30+ years old) to evaluate the long-term corrosion protection provided by epoxy coatings. The 1.5-in (38 mm) FRP dowels with polyester resin and E-glass exhibited generally low LTE values, and are not providing performance comparable to that of the 1.5-in (38-mm) epoxy-coated mild steel dowel bars. The evaluation of alternative stainless steel clad dowels and concrete filled stainless steel tubes or pipes (Type 304 or Type 316) was inconclusive due to the small sample and the relatively short (14 years maximum) evaluation period, but it appears that they will perform satisfactorily in excess of 30 years given the minimal deterioration observed. Based on the coring of the older pavement projects, the life of the epoxy coating on mild steel dowels evaluated in Ohio and Wisconsin appears to be in the 25 to 30-year range. Many of the epoxy-coated dowels retrieved from in-service pavements revealed that the epoxy coating was debonded from the mild steel dowel and the surface of the mild steel dowel under the coating was pitted and rusted. In most cases, however, there was no significant loss of cross section. A review of two older projects in Ohio constructed with plastic-coated dowels indicated that those dowels were in excellent condition after 33 years. The overall condition of these projects was also very good, with little if any visible joint deterioration. Because plastic-coated dowels are similar to epoxy-coated dowels in terms of costs, they appear to be a cost-effective alternative to conventional epoxy-coated dowels.
Book Synopsis Laboratory Evaluation of Corrosion Resistance of Various Metallic Dowel Bars by : Seung-Kyoung Lee
Download or read book Laboratory Evaluation of Corrosion Resistance of Various Metallic Dowel Bars written by Seung-Kyoung Lee and published by . This book was released on 2018 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents corrosion study findings related to corrosion resistance of eight types of metallic dowel bars. The accelerated laboratory corrosion testing was performed using seven small-scale concrete slabs that simulated typical concrete pavements for 452 d of a modified Southern Exposure followed by a detailed autopsy of the extracted bar samples. The weekly Southern Exposure cycles consisted of a 4-d wetting cycle in 15 weight percent chloride solution at 75°F and a 3-d drying cycle at 100°F. The best corrosion performance was achieved by type 316L solid stainless steel (SS) dowel bars. Three types of stainless steel–clad (SC) bars also exhibited superior corrosion resistance. The epoxy-coated (EC) dowel bars performed well and behaved similarly to the SS bar types. However, the autopsied EC dowel bars revealed varying degrees of coating delamination, and localized corrosion originated from some of the artificial coating defects. Despite this problem, EC dowel bars were able to suppress corrosion activities because of the shielding role of the coating, even disbonded EC dowel bars, against corrosion current. As expected, the worst corrosion performance was observed with the uncoated carbon steel dowel bars. Most of them produced the corrosion-induced concrete cracks. The hot-dip galvanized and zinc-clad dowel bars are classified as the second worst performance group. Even though the zinc-coating layers performed well as the sacrificial cathodic protection systems for the bare steel exposed at the artificial defect sites, the consumption rates of the zinc mass were too excessive, leading to the premature depletion of the zinc layers in the areas with elevated chloride concentration. Therefore, these zinc-based dowel bars are recommended only for infrequently salted roadways and mild service conditions. For major roadways, where repairs and/or traffic disruption are not feasible, high grades of solid SS dowel bars are recommended, even though this means very high initial costs. Considering the unavailability of the SC bars and the good performance of EC dowel bars at a much lower price, it is recommended that high-quality EC dowel bars be continuously used in the majority of the major roadways subject to heavy deicing salts provided that damage touchups and stringent quality assurance/quality control practices are implemented in the field to minimize initial coating defects until they are buried in concrete.
Book Synopsis Non-corrosive Tie Reinforcing and Dowel Bars for Highway Slabs by : Max L. Porter
Download or read book Non-corrosive Tie Reinforcing and Dowel Bars for Highway Slabs written by Max L. Porter and published by . This book was released on 1993 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Precast Concrete Pavement Technology by : Shiraz D. Tayabji
Download or read book Precast Concrete Pavement Technology written by Shiraz D. Tayabji and published by . This book was released on 2013 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.
Book Synopsis High performance concrete pavements by :
Download or read book High performance concrete pavements written by and published by . This book was released on 2002 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :American Association of State Highway and Transportation Officials Publisher :AASHTO ISBN 13 :1560514698 Total Pages :38 pages Book Rating :4.5/5 (65 download)
Book Synopsis LRFD Guide Specifications for the Design of Pedestrian Bridges by : American Association of State Highway and Transportation Officials
Download or read book LRFD Guide Specifications for the Design of Pedestrian Bridges written by American Association of State Highway and Transportation Officials and published by AASHTO. This book was released on 2009 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :American Association of State Highway and Transportation Officials Publisher :AASHTO ISBN 13 :156051423X Total Pages :218 pages Book Rating :4.5/5 (65 download)
Book Synopsis Mechanistic-empirical Pavement Design Guide by : American Association of State Highway and Transportation Officials
Download or read book Mechanistic-empirical Pavement Design Guide written by American Association of State Highway and Transportation Officials and published by AASHTO. This book was released on 2008 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis AASHTO Guide Specifications for LRFD Seismic Bridge Design by :
Download or read book AASHTO Guide Specifications for LRFD Seismic Bridge Design written by and published by AASHTO. This book was released on 2011 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work offers guidance on bridge design for extreme events induced by human beings. This document provides the designer with information on the response of concrete bridge columns subjected to blast loads as well as blast-resistant design and detailing guidelines and analytical models of blast load distribution. The content of this guideline should be considered in situations where resisting blast loads is deemed warranted by the owner or designer.
Book Synopsis Guide to Bridge Hydraulics by : Transportation Association of Canada
Download or read book Guide to Bridge Hydraulics written by Transportation Association of Canada and published by Thomas Telford. This book was released on 2004 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Basic hydraulic considerations - Channel types and behaviour relation to bridges - Basic hydraulic requirements - Hydraulic design procedures Hydrologic estimates - Statistical frequency analysis - Runoff modeling - Empirical methods - High water levels and stage-discharge relations - Extreme floods and risk Scour protection and channel control - Scour protection around bridge foundations - Erosion protection of banks and slopes - Design of rock riprap - Cannel control works Hydraulic aspects of construction, inspection and maintenance - Construction - Inspection - Maintenance Special problems - Tidal crossings - Inland basic crossings - Waves and waves protection - Physical modeling of bridge problems - Alluvial fans - Debris flow and torrents
Book Synopsis Bridge Life-cycle Cost Analysis by : Hugh Hawk
Download or read book Bridge Life-cycle Cost Analysis written by Hugh Hawk and published by Transportation Research Board. This book was released on 2003 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying CD-ROM contains software, Guidance manual, User manual, and appendixes to report.
Book Synopsis Safety Inspection Procedures by : United States. Bureau of Labor Standards
Download or read book Safety Inspection Procedures written by United States. Bureau of Labor Standards and published by . This book was released on 1967 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Superpave Mix Design by : Asphalt Institute
Download or read book Superpave Mix Design written by Asphalt Institute and published by . This book was released on 2001-01-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
