Vector Corrosion Blog
Portsmouth Memorial BridgeMarch 7th, 2020
Corrosion Evaluation and Cathodic Protection Design for Concrete Piles in a Marine Environment
As part of an existing bridge renovation, steel threadbar micro-piles were used to pin the existing approximately 100 year old concrete piers to bedrock below the river channel. During the micro-pile installation, a concern arose that cracks, voids, or damage to the existing piers may have exposed the micro-pile steel casings directly to seawater.
Vector Corrosion Services was contracted to perform corrosion testing on the piers to determine the suitability of cathodic protection and to develop a system sufficient for a 25 year anode design life. Onsite testing was performed to confirm that corrosion was a concern and this information was used to design the customized galvanic protection system utilizing bulk aluminum anodes placed around the piers.
Vector’s scope of work included the following
- On site corrosion investigation and recommendations
- Cathodic protection design
- System commissioning and report
$50,000, Construction Costs: n/a
Owner: New Hampshire DOT
Client: Archer Western Contractors
45 Shawmut Road
Canton, MA 02021
Mr. Tom Hale, 207-439-8396