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

Funahashi, M.; Young, W.T.

i

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.

File Language:

English

Details

Creators:

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

United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA-RD-98-058
Resource Type:

Research Paper
Geographical Coverage:

Florida
Corporate Publisher:

Turner-Fairbank Highway Research Center
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.)
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/13628/dot_13628_DS1.pdf
File Type:

[PDF - 5.99 MB]
Collection(s):

Federal Highway Administration ; US Transportation Collection
Main Document Checksum:

urn:sha-512:8f30dd039e663a4c5fbadd8b8fc62c23c9d1b36b3d332d95c3b048fd7766df231246b58da847730a630df879970513b5a86fa27db7bf6d29763451b2f485f3af

File Language:

English

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