Corrosion Protection of Prestressed Concrete Bridges Due to Chloride

− Its 30 Years History and Verification in Japan Road Bridges

Abstract

In Japan, chloride- corrosion damaged concrete bridges have emerged from almost 30 years ago. The measures including technical guidelines are almost seems as if it were established, several essential issues have been left in practical field as protection design and construction.
For selecting suitable measures, some decision have to be made through considering including not only technical standards but comprehensive backgrounds including history. such as the origin of chloride corrosion damaged problem, how was started to develop such measures and what are evaluated today.
This paper would help to select the appropriate design and measure to protect corrosion damages of concrete bridge.