Field evaluation of a new aluminum alloy as a sacrificial anode for steel embedded in concrete

Funahashi, M.; Young, W.T.; United States. Federal Highway Administration

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Field evaluation of a new aluminum alloy as a sacrificial anode for steel embedded in concrete

1998-04-01
By Funahashi, M. ; Young, W.T.

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English

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Creators:

Funahashi, M. ; Young, W.T.

Funahashi, M. ; Young, W.T. Less -
Corporate Creators:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

Aluminum Alloys Bridges Cathodic Protection Concrete Corrosion Protection Florida Materials Piles (Supports) Sacrificial Cathodic Protection Steel Zinc Alloys
Publication/ Report Number:

FHWA-RD-98-058
Resource Type:

Research Paper
Geographical Coverage:

Florida
TRIS Online Accession Number:

00748281
Corporate Publisher:

Turner-Fairbank Highway Research Center
NTL Classification:

NTL-HIGHWAY/ROAD TRANSPORTATION-Materials
Abstract:

This is the final report for a study to evaluate the use of sacrificial cathodic protection for reinforced and prestressed concrete bridge members. Cathodic protection (CP) using impressed current is an accepted and common method used to provide corrosion protection to steel in concrete. Sacrificial cathodic protection, however, is relatively easy to apply, does not require that the anode be electrically isolated from the steel, and does not require an external power supply. In the past, attempts to apply sacrificial anode CP to bridge structures have met with limited success because conventional sacrificial anode alloys operate at a low fixed potential and the conductivity of concrete often does not permit satisfactory current output. The Florida Department of Transportation (DOT) has applied arc-sprayed zinc to several bridges in the marine environment. This study examined the performance of existing sacrificial alloys in different environments for sacrificial CP, and developed new sacrificial alloys for protecting steel in concrete. The study consisted of both laboratory and field tasks. (65 p.)
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PDF
Collection(s):

Federal Highway Administration US Transportation Collection
Main Document Checksum:

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urn:sha256:8fb921aa5b36605e1b3b93d87869ed475b09669dac567d817643fac559ee75ef
Download URL:

https://rosap.ntl.bts.gov/view/dot/13628/dot_13628_DS1.pdf
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Field evaluation of a new aluminum alloy as a sacrificial anode for steel embedded in concrete

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