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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"epoxy coated"”.
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Field Performance of Epoxy-Coated Reinforcing Steel in Virginia Bridge Decks
The corrosion protection performance of epoxy-coated reinforcing steel (ECR) was evaluated in 18 concrete bridge decks in Virginia in 1997. The decks were 2 to 20 years old at the time of the investigation. The concrete bridge deck inspections included crack survey and cover depth determination in …
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Corrosion Protection Service Life of Epoxy Coated Reinforcing Steel in Virginia Bridge Decks
… protection service life extension provided by epoxy-coated reinforcement (ECR) was determined by comparing ECR and bare bar from 10 bridge decks built between 1981 and 1995. The objective was to determine the corrosion protection service life time extension provided by ECR field specimens with …
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Experimental investigation of bridge deck with textured epoxy-coated rebars subjected to thermal loading
… during the 1970s with the incorporation of the epoxy-coating protection system. However, research later demonstrated that the smooth surface resulting from the epoxy-coating application reduces most of the friction between the rebar and the surrounding concrete. Consequently, forces acting on …
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Evaluation of surface roughness and bond-slip behavior of new textured epoxy-coated reinforcing bars
Epoxy-coated reinforcing bars are widely used in bridge decks to mitigate the corrosion of reinforcing steel. Research and practical experience both showed that the smooth epoxy coating significantly reduces the bond between concrete and reinforcing steel, which often results in the early …
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Parameters Influencing the Corrosion Protection Service Life of Epoxy Coated Reinforcing Steel in Virginia Bridge Decks
This study is an evaluation of epoxy coated reinforcing steel (ECR) and its ability to effectively provide corrosion protection in reinforced concrete highway bridge decks. An analysis was conducted on 10 bridge decks built in the state of Virginia between the years 1981 and 1995. A total of 141 …
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Performance Evaluation of Epoxy-Coated Reinforcing Steel and Corrosion Inhibitors in a Simulated Concrete Pore Water Solution
Three epoxy-coated reinforcing steel (ECR) types removed from job sites, one shipped directly from the coater's plant, three commercial corrosion inhibitors, and one ECR plus a corrosion inhibitor were evaluated as reinforcing steel corrosion protection systems against chloride induced corrosion. …
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Damage of concrete with epoxy coated reinforcement due to corrosion, freeze-thaw and fatigue with application to bridge decks
… corrosion of the steel bars is a common problem. Epoxy coated reinforcement (ECR) is known to perform better than plain (black) steel, but the appropriate maintenance schedule for ECR bridge decks is not well established. The goal of this project was to compare damage of concrete reinforced with …
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Corrosion resistance of concrete reinforcement
… corrosion of steel reinforcement in concrete and epoxy coated reinforcing bars as corrosion resistant alternatives. Several case studies explore the durability and deterioration issues for epoxy-coated bars discovered through 30 years of implementation in reinforced concrete structures. The …
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Subsidence Cracking of Concrete Over Steel Reinforcement Bar in Bridge Decks
… mixture types to determine the influence that epoxy coated reinforcement, cement type and bar spacing may have on the probability of subsidence cracking in bridge deck slabs. It was determined that there is not a significant difference in the probability of cracking of concrete between concrete …
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Sensitivity of Half-Cell Potential Measurements to Properties of Concrete Bridge Decks
… temperature, and presence or condition of epoxy coating on half-cell potential measurements of concrete bridge decks typical of those in Utah. The laboratory testing associated with this research followed a full-factorial experimental design. Nine rectangular concrete slab specimens were …
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Corrosion Testing and Modeling of Chloride-Induced Corrosion Deterioration of Concrete Bridge Decks
… samples. The Virginia bridge deck was built with epoxy-coated reinforcement as top reinforcement mat and black bar as the bottom mat. The Florida bridge is a segmental prestressed box girder structure built with black bar. The New Jersey bridge deck was overlaid with latex modified concrete. The …
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Correlation of corrosion measurements and bridge conditions with NBIS deck rating
Since the use of epoxy coated steel has become mandatory starting in the 1980s, recent studies have shown that epoxy coating does not prevent corrosion, but instead will debond from the steel reinforcement in as little as 4 years (Weyers RE et al, 1998) allowing instead a much more insidious form …
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Structural Performance and Corrosion Resistance of Fiber Reinforced Polymer Wrapped Steel Reinforcing Bars
… hybrid bars, stainless steel bars, and standard epoxy coated steel reinforcing bars. The designs were compared and a life cycle cost (LCC) analysis was performed to assess the economic advantages or disadvantages of the hybrid bars. Conclusions and recommendations for standard practice and design …
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The role of system dynamics on the behavior of elastomeric friction
Friction induced vibration of an epoxy coated shaft rotating in an elastomeric bushing is investigated. This study investigates the manner in which system dynamics and friction mechanisms are responsible for friction induced vibration and noise generation. A test method was developed to measure the …
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Corrosion performance of coated steel bars in cracked and uncracked reinforced concrete beams
Textured epoxy-coated reinforcing bar (TEC) is a material which has gained interest from several Departments of Transportation (DOTs) for its ability to provide enhanced bonding to concrete thereby reducing cracking within transportation bridge deck systems. It aims to improve upon conventional …
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Investigation of Ultra-High Performance Concrete for Longitudinal Joints in Deck Bulb Tee Bridge Girders
… for this application is the bond strength of epoxy-coated reinforcing bars to the UHPC as well as the tension strength of the UHPC when the rebar in the connection is stressed axially in tension. ASTM-standard test procedures in this study showed that compressive strengths up to 16 ksi, …
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Service and Ultimate Limit State Flexural Behavior of One-Way Concrete Slabs Reinforced with Corrosion-Resistant Reinforcing Bars
… method. The bar types studied were Grade 60 (uncoated), epoxy-coated reinforcing (ECR, Grade 60), Enduramet 32 stainless steel, 2304 stainless steel, MMFX2, and glass fiber reinforced polymer (GFRP). The experimental program was designed to evaluate how a one-to-one replacement of the Grade 60 …
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Environmental Influence on the Bond Between a Polymer Concrete Overlay and an Aluminum Substrate
… some of the most used rehabilitation methods. Epoxy coated reinforcing steel (ECR) was developed and promoted as a long term corrosion protection method by the Federal Highway Administration (FHWA). However, recent evidence has suggested that ECR will not provide adequate long term corrosion …
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Corrosion Assessment for Failed Bridge Deck Closure Pour
… 1992 as part of a bridge rehabilitation project, epoxy coated reinforcement were used as the reinforcing steel. Four slabs from the bridge deck, containing the closure, were removed and transported to the Virginia Tech Structures and Materials Research Laboratory for further evaluation. Also, …
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