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Performance Of Epoxy Coated Reinforcing Steel In Highway Bridges
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Book Synopsis Performance of Epoxy-coated Reinforcing Steel in Highway Bridges by : Kenneth C. Clear
Download or read book Performance of Epoxy-coated Reinforcing Steel in Highway Bridges written by Kenneth C. Clear and published by Transportation Research Board. This book was released on 1995 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance of Epoxy-coated Reinforcing Steel in Highway Bridges by :
Download or read book Performance of Epoxy-coated Reinforcing Steel in Highway Bridges written by and published by . This book was released on 1995 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NCHRP 10-37, Performance of Epoxy-coated Reinforcing Steel in Highway Bridges by : KCC Inc
Download or read book NCHRP 10-37, Performance of Epoxy-coated Reinforcing Steel in Highway Bridges written by KCC Inc and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance of Epoxy-coated Reinforcing Steel in Highway Bridges by : Andrzej S. Nowak
Download or read book Performance of Epoxy-coated Reinforcing Steel in Highway Bridges written by Andrzej S. Nowak and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance of Epoxy Coated Rebars in Bridge Decks by : J. L. Smith
Download or read book Performance of Epoxy Coated Rebars in Bridge Decks written by J. L. Smith and published by . This book was released on 1996 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Epoxy coated rebar (ECR) was introduced in the mid 1970s as a means to minimize concrete deterioration caused by corrosion of the reinforcing steel and to extend the useful life of highway structures. This report summarizes the results of investigations performed by highway agencies in the United States and Canada, academia, and the Canadian Strategic Highway Research Program to evaluate the performance of ECR. A total of 92 bridge decks, two bridge barrier rails, and one noise barrier rail was evaluated in the States of California, Indiana, Kansas, Michigan, Minnesota, New York, Ohio, Pennsylvania, Virginia, West Virginia, and Wisconsin, and the provinces of Alberta, Nova Scotia, and Ontario.
Book Synopsis Final Report -- a Synthesis of the Use of Galvanized and Epoxy-coated Reinforcing Bar for Highway Bridges by : Kris Peterson
Download or read book Final Report -- a Synthesis of the Use of Galvanized and Epoxy-coated Reinforcing Bar for Highway Bridges written by Kris Peterson and published by . This book was released on 1996 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Corrosion Investigation of Four Bridges Built Between 1973 and 1978 Containing Epoxy-coated Reinforcing Steel by : Paul D. Krauss
Download or read book Corrosion Investigation of Four Bridges Built Between 1973 and 1978 Containing Epoxy-coated Reinforcing Steel written by Paul D. Krauss and published by . This book was released on 1996 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wiss, Janney, Elstner Associates, Inc., performed an in-depth field investigation into the performance of epoxy-coated reinforcing bars in four bridge decks. The study included two decks built on steel girders and two built on precast concrete girders. Two decks had been overlaid with a 2-in. low slump overlay. The bridges were all built between 1973 and 1978. Visual crack and delamination surveys were performed. Core samples were drilled for determination of chloride concentrations and to examine the embedded steel. Polarization resistance, half-cell, and AC impedance measurements were taken, but were not conclusive. Further development is needed. Laboratory testing included inspection of the coating, holiday and thickness tests, coating adhesion tests, and underfilm contamination.
Book Synopsis Methods of Corrosion Protection and Durability of Concrete Bridge Decks Reinforced with Epoxy-coated Bars - Phase I by : Lisa M. Samples
Download or read book Methods of Corrosion Protection and Durability of Concrete Bridge Decks Reinforced with Epoxy-coated Bars - Phase I written by Lisa M. Samples and published by . This book was released on 1999 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Summary Report on the Performance of Epoxy-coated Reinforcing Steel in Virginia by : Richard E. Weyers
Download or read book Summary Report on the Performance of Epoxy-coated Reinforcing Steel in Virginia written by Richard E. Weyers and published by . This book was released on 2006 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: From 1992 to 2006, the Virginia Transportation Research Council and its contract researchers conducted a long-term systematic series of investigations to evaluate the corrosion protection effectiveness of epoxy-coated reinforcement (ECR) and to identify and recommend the best and most cost-effective corrosion protection system for Virginia bridge decks. This report summarizes this research and subsequent efforts to implement alternative reinforcement. The work was conducted, and is reported, in this general order: review of historical performance of ECR, ECR performance in solutions and concrete, and preliminary field investigations; investigation of field performance of bridge decks built with ECR; assessment of alternative corrosion protection methods; development of probabilistic service life models for bridge decks and laboratory assessment of ECR cores extracted from bridge decks to determine service life extension; efforts to implement alternative reinforcement. The series of studies demonstrated that the epoxy coating on ECR naturally degrades in the highly alkaline moist environment within concrete. The subsequent loss of bond, coupled with the inevitable flaws in the coating induced by construction, leads to an estimated service life benefit of ECR of as little as 3 to 5 years. Further, non-critical decks, beams, and substructure elements not exposed to marine environments, particularly on secondary and rural routes, can be cost-effectively constructed and maintained using low-permeability concrete and black reinforcing bar. However, because the Federal Highway Administration requires the use of corrosion-resistant reinforcement, and because ECR cannot provide adequate corrosion protection for structures designed for a 100-year+ service life as currently recommended by FHWA, the report recommends that the Virginia Department of Transportation amend its specifications regarding the use of ECR to require the use of corrosion-resistant metallic reinforcing bars such as MMFX2, stainless steel clad, and solid stainless steel.
Book Synopsis A Comparison of the Corrosion Performance of Uncoated, Galvanized, and Epoxy Coated Reinforcing Steel in Concrete Bridge Decks by : Ronnie L. McCrum
Download or read book A Comparison of the Corrosion Performance of Uncoated, Galvanized, and Epoxy Coated Reinforcing Steel in Concrete Bridge Decks written by Ronnie L. McCrum and published by . This book was released on 1995 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Epoxy Coated Reinforcing Steel in Bridge Decks by : Satinder K. Munjal
Download or read book Evaluation of Epoxy Coated Reinforcing Steel in Bridge Decks written by Satinder K. Munjal and published by . This book was released on 1981 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Long-term Performance of Epoxy-coated Reinforcing Steel in Heavy Salt-contaminated Concrete by : Seung-Kyoung Lee
Download or read book Long-term Performance of Epoxy-coated Reinforcing Steel in Heavy Salt-contaminated Concrete written by Seung-Kyoung Lee and published by . This book was released on 2004 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis In-service Performance of Epoxy Coated Steel Reinforcement in Bridge Decks by : Robert A. Reis
Download or read book In-service Performance of Epoxy Coated Steel Reinforcement in Bridge Decks written by Robert A. Reis and published by . This book was released on 1995 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Field Performance of Epoxy-coated Reinforcing Steel in Virginia Bridge Decks by : W. Pyc
Download or read book Field Performance of Epoxy-coated Reinforcing Steel in Virginia Bridge Decks written by W. Pyc and published by . This book was released on 2000 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis In-service Performance of Epoxy Coated Steel Reinforcement in Bridge Decks by :
Download or read book In-service Performance of Epoxy Coated Steel Reinforcement in Bridge Decks written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Performance of Epoxy Coated Reinforcement: by :
Download or read book The Performance of Epoxy Coated Reinforcement: written by and published by . This book was released on 2005 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: In reinforced concrete construction, epoxy coated reinforcement (ECR) was introduced in the 1970s to provide a physical barrier to chlorides at the concrete-steel interface. The Ontario Ministry of Transportation has used ECR in bridges & other components since 1979. In response to reports of corrosion of ECR in structures in Florida and other concerns, the Ministry initiated a detailed investigation in 1997 of the barrier walls of five ECR-reinforced highway bridges constructed in 1979 to assess the effectiveness of the epoxy coating in preventing chloride-induced corrosion. This paper updates the Ministry's investigations since the 1997 barrier wall study and documents significant findings with respect to ECR performance, including its performance in comparison to that of black steel reinforcement. It discusses various considerations related to the use of ECR and factors affecting its performance, such as coating quality, repair of structures constructed with ECR, and corrosion protection strategies.
Book Synopsis Field Performance of Epoxy-coated Reinforcing Steel in Virginia Bridge Decks by :
Download or read book Field Performance of Epoxy-coated Reinforcing Steel in Virginia Bridge Decks written by and published by . This book was released on 2000 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, the corrosion protection performance of epoxy-coated reinforcing steel (ECR) was evaluated using approximately 250 concrete cores from 18 bridge decks in Virginia. The decks were 2 to 20 years old at the time of the investigation. The deck field inspections included a crack survey and cover depth determination in the right traffic lane. A maximum of 12 cores with the top reinforcement randomly located in the lowest 12th percentile cover depth were taken from each bridge deck. Because of the safety concerns associated with taking cores from the lower steel mat, and to minimize damage to the bridge, a maximum of only 3 cores were taken through the truss bars. The laboratory evaluation of the concrete cores included a visual examination and a determination of the carbonation depth, moisture content, absorption, percent saturation, and chloride content at a 13-mm depth. The rapid chloride permeability test was also performed for the surface and base concrete on samples obtained from the cores taken through the truss bars to determine chloride permeability. The ECR inspection consisted of a visual examination, a damage evaluation, and a determination of coating thickness and adhesion. The condition of the steel underneath the epoxy coating was also evaluated. Adhesion loss of the epoxy coating to the steel surface was detected in all but one deck that was 4 years old and older. The epoxy coatings were debonding from the reinforcing bars. Whereas a bonded coating can be expected to protect the steel, a debonded coating allows chlorides, moisture, and oxygen to reach the steel and initiate a rapid corrosion mechanism. Reinforcing bars in various stages of adhesion loss showed visible signs of a corrosion process underneath the coating, suggesting that ECR will provide little or no additional service life for concrete bridge decks in comparison to bare steel. Other systems that will provide longer protection against chloride-induced corrosion of the reinforcing steel with a higher degree of reliability should be considered.
