Cathodic protection of pre-tensioned concrete. Part 2: Experiments upon prestressed beams
- Florida Atlantic Univ., Boca Raton, FL (United States). Dept. of Ocean Engineering
Experiments were performed upon a series of pre-tensioned concrete beams whereby these were subjected sequentially to accelerated tendon corrosion via anodic polarization and then to cathodic over-protection. Lastly, the beams were autopsied, and the tendons were analyzed with regard to the extent of corrosion and occurrence of any fractures. A model was formulated which characterizes the stress state of a corroding tendon in concrete, and the data from the beams were evaluated within the context of this and of Constant Extension Rate Testing (CERT) results that were developed in companion research. Implications of the results with regard to criteria for qualification of precorroded pre-tensioned concrete members for cathodic protection are discussed.
- OSTI ID:
- 351770
- Report Number(s):
- CONF-980316-; TRN: IM9927%%295
- Resource Relation:
- Conference: Corrosion `98, San Diego, CA (United States), 22-27 Mar 1998; Other Information: PBD: 1998; Related Information: Is Part Of Corrosion `98: 53. annual conference and exposition, proceedings; PB: [6600] p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Long-term effects of cathodic protection on prestressed concrete structures: Hydrogen embrittlement of prestressing steel
Understanding the long term effects of cathodic protection on pre-stressed concrete structures: Hydrogen embrittlement of pre-stressing steel