Since prestressed concrete bridges were first constructed in the United States in the early 1950’s, more than 14,000 such structures have been incorporated into the nation’s highway system. Relatively little evidence of corrosion of the tendons has been observed, but the short exposure times of less than 20 years may not be sufficient to point up problem areas. Also, the present trend toward the use of higher strength tendons, longer spans, and a decreased spread between the working and ultimate strength of the steel has contributed to the concern about possible corrosion damage, especially stress corrosion or hydrogen embrittlement.

You do not currently have access to this content.