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原文传递 STEEL BRIDGE PROTECTION POLICY VOLUME IV LIFE CYCLE COST ANALYSIS AND MAINTENANCE PLAN

题名：	STEEL BRIDGE PROTECTION POLICY VOLUME IV LIFE CYCLE COST ANALYSIS AND MAINTENANCE PLAN
作者：	Jon D. Flicker Tarek Zayed
关键词：	coating, inspection, life cycle cost analysis, Markov Chains Process, metalization. panting, quality control, sted bridge, warranty Clauses.
摘要：	The study identifies various painting systems that are successfully used in Indiana’s surrounding states and other industries. The identified systems are further screened and evaluated. After prudently comparing INDOT’s inorganic zine/vinyl system with the waterbome acrylic system, the moisture cure urethanc coating system, and the 3-coat system of zine-epoxy-urethane, the results show that the new 3-coat system fulfills INDOT’s needs with the most benefits. Therefore, the 3-coat system is recommended to replace INDOT present inorganic zine/vinyl system To deal with the problems facing the lead-based paint, a comparison between full-removal and over-coating alternatives is made. Results show that over-coating might provide a good protection for less than half the cost of full-removal; however it the the lead full-removal process and does not completely solve the environmental problem. The metalization of steel bridges is seemingly a potential protection policy. After reviewing standards and specifications on metalization it is shown that metalization jobs require a higher degree of control. It suits on-shop practices, however, the initial cost is considerably high- This study also describes a life cycle cost analysis that was done to determine an optimal painting system for INDOT. Herein, a deterrnlrilrtic method of economic analysis and a stochastic method of Markov chains process are used. The analysis not only reconfirms that the 3-coat system is the comparatively better painting system, but also generates an optimal painting maintenance plan for INDOT. To assure the qualify of paint material and workmanship after substantial completion of the painting contract, the development of legally binding and dependable warranty clauses is initiated in this study. The developed painting warranty clauses were primarily derived from the painting warranty clauses used by IDOT.MDOT, and INDOT’s pavement warranty clauses. A comparative study was conducted on eleven essential categories. Among them, it was found that the warranty period, the definition of “defect”, and the amount of the warranty bond all need further evaluation.
报告类型：	科技报告