Global ETD Search
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 21 for “"epoxy coating"”.
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Epoxy coating systems: Probing negative thermal expansion with zinc cyanide
… work that has been studied on zinc cyanide epoxy composites, and Chapter 4 outlines future directions that are worthy of pursuit or may already be under investigation.
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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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In-situ early detection of metal corrosion via "turn-on" fluorescence in "smart" epoxy coatings
<p>Organic coatings (e.g., epoxy coatings) have been widely used to protect metal and metal alloys against corrosion. However protective coating fails with time, leading to corrosion of the metal substrate. When localized corrosion occurs, without being detected, it can result in disastrous failure …
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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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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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Investigation of parameters governing the corrosion protection efficacy of fusion bonded epoxy coatings
… through the application of fusion bonded epoxy coatings. The purpose of this study was to investigate various coating and exposure parameters to determine their effects on the corrosion of reinforcing steel. The parameters investigated were: chloride content at the bar depth, coated bar …
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Measurement of Interfacial Adhesion in Glass-Epoxy Systems Using the Indentation Method
The adhesion of coatings often controls the performance of the substrate-coating system. Certain engineering applications require an epoxy coating on a brittle substrate to protect and improve the performance of the substrate. Experimental observations and measurements of interfacial adhesion in …
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Synthesis and characterization of functional polymers with controlled architecture and their application as anticorrosion primers
… are subjected to very corrosive conditions. Epoxy based protective coatings are used by the Navy for minimizing corrosion and they currently offer five to seven years of protection. The work described in this thesis is in line with a major program instigated by the U.S. Navy to improve the …
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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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Microvascular Networks for Continuous Self -Healing Materials
… damage events in a continuous self-healing coating on a microvascular substrate. A three-dimensional, interconnected microvascular network in the substrate serves as a delivery system for healing materials to heal damage in a polymer coating. Two approaches to microvascular delivery are …
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Microcapsule-based self-protecting coatings
… to mitigate corrosion is to apply a protective coating (layer) to the targeted “substrate” well before placing the item in service. The protective coating acts as a passive layer between the protected substrate and the corrosive environment. Generally, the protective layer includes additive(s) …
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Development of synthetic fiber-based reinforcements for thermoplastics as alternative to steel-based analogs for industrial applications
… experimental results of phase 1 show that the epoxy coating on synthetic fibers significantly increases its load-bearing capacities due to improved compatibility between the fibers and the TPU matrix caused by chemical interaction and enhanced interlocking. Experimental results from phase 2 …
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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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Ultrasonic Microscopy Analysis of Corrosion -- A Nondestructive Evaluation of Paint Weathering Effects <i>and</i> Synthesis and Characterization of Nanoscale Water-reducible Polymer Particles
… weathering, especially corrosion, has been a coatings industry goal for decades. The use of high resolution ultrasonic microscopy coupled with digital image analysis and low cost mass digital storage allowed the rate and detailed progress of corrosion, even that not visible to the eye, to be …
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Service Life Modeling of Virginia Bridge Decks
… decks â 0.47 water/cement (w/c), 16 Epoxy-Coated Reinforcement (ECR) decks â 0.45 w/c, and 10 ECR decks â 0.45 w/(c+pozzolan). Using chloride titration data and cover depth measurements from the sampled bridge decks and chloride corrosion initiation values determined from 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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Quantification of bond strength between cementitious materials and microbially-induced calcium carbonate precipitates
… using nanoscratch tests. A low-viscosity epoxy repair system was studied alongside the bio-deposits at both scales to provide a benchmark for comparison. Due to the challenges encountered when analyzing nanoscratch test results for a porous, discretely crystalline coating, data analysis …
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Self-healing materials and multinozzle printheads with embedded microvascular networks
… interpenetrating microvascular networks in an epoxy substrate/coating architecture are fabricated by direct-write assembly. Two key fabrication advancements were required: (1) dual ink printing to produce separate interpenetrating networks and (2) vertical ink printing to provide a healing …
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Two Issues in Premise Plumbing: Contamination Intrusion at Service Line and Choosing Alternative Plumbing Material
… present analysis. Other alternatives include an epoxy coating technique on the existing piping systems, without the need to tear into walls. Multiple attributes of a plumbing system including cost (material plus labor charges), taste and odor impacts, potential for corrosion, longevity of the …
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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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