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.

Architects, specifiers, contractors, and manufacturers in the waterproof industry cover the basics (including cathodic protection terminology, systems, and history), problem-solving in the field and in the lab, and perceived problem areas and proposed solutions. From the symposium of the same name h

The conference focused on the major problem facing highway and bridge engineers: deterioration of concrete bridge decks caused by corrosion of the reinforcing steel. The conference was aimed primarily at giving bridge owners and engineers an understanding of cathodic protection as the only means to stop corrosion on bridge decks.

TRB's National Cooperative Highway Research Program (NCHRP) Report 668: Framework for a National Database System for Maintenance Actions on Highway Bridges explores a potential framework that provides a uniform format for collecting, reporting, and storing information on bridge maintenance actions for inclusion in a national bridge maintenance database. Appendixes A through E to NCHRP Report 668 provide detailed information on the different aspects of the research. Appendix A: Information on Bridge Maintenance Programs; Appendix B: National Bridge Maintenance Database Tables; Appendix C: List of Element Level Costs of Maintenance Actions; Appendix D: Examples of National Bridge Maintenance Database Uses; Appendix E: Other National Bridge Maintenance Database Tables--