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原文传递 Installation and Operational Comparison of Five Bridge Deck Cathodic Protection Systems; Final rept

题名：	Installation and Operational Comparison of Five Bridge Deck Cathodic Protection Systems; Final rept
作者：	Carello, R. A.; Kennelly, T.; Parks, D. M.
关键词：	Bridge decks; Cathodic protection; Installing; Reinforced concrete; Polymers; Zinc; Corrosion prevention
摘要：	This report compares the application and testing of the following five independent cathodic protection (CP) systems installed on three reinforced concrete bridge decks: (1) Coke Breeze; (2) Metallized Zinc; (3) Raychem 'Ferex 100'; (4) Eltech 'Elgard 210'; (5) Conductive Polymer. All five CP systems were installed under a single contract and work was performed by the same contractor during the summer of 1988. Construction methods, materials, and the difficulties encountered in installing each type of system are included. During the six year study period (November 1988 to November 1994), all five systems were monitored regularly. Parameters monitored were driving voltage, current density, and polarization decay. The efficiency of providing corrosion protection for each system based on these parameters is compared. All five CP systems met or exceeded the four hour polarization decay test criteria established by the National Association of Corrosion Engineers (NACE). The Coke Breeze, the Metallized Zinc, and the Conductive Polymer were independently evaluated in 1992 by a corrosion consultant for the Strategic Highway Research Program (SHRP). A second, independent SHRP contractor evaluation of these systems (except the Conductive Polymer) was conducted in 1994. Both times, the contractors found the systems to be performing efficiently according to NACE criteria.
总页数：	182p
报告类型：	科技报告