Menu
Search
Filters
Close
Menu

09228 Degradation of Steel Girder Bridge Bearing Systems by Corrosion

Picture for 09228 Degradation of Steel Girder Bridge Bearing Systems by Corrosion
Available for download
Product Number: 51300-09228-SG
ISBN: 09228 2009 CP
Author: Lisa J. Lindquist Hoeke, Lawrence F. Kahn, Robert D. Moser, Preet M. Singh and Kimberly E. Kurtis
Publication Date: 2009
Industry: Highways & Bridges
$0.00
$20.00
$20.00
Corrosion of anchor bolts in bridge bearings presents two principal problems: (1) failure of the anchorage due to loss of bolt shear strength, and (2) loss of bearing functionality due to the build up of corrosion products. Of Georgia’s 1500 steel girder bridges, 411 (27%) were found to be experiencing anchor bolt corrosion through routine bridge inspections. Field investigations were performed at eight bridges around Georgia. Anchor bolt corrosion was found to be locally accelerated, with necking occurring at the concrete interface. This degradation is primarily due to the formation of concentration cells with the alkaline concrete embedment and to crevice effects where the build up of soil and debris occurs at the anchorage. An experimental program was developed, including long-term in-solution exposures in addition to electrochemical testing. Results of long-term concentration cell experiments indicate corrosion rates up to 4.5mpy, 4 to 6 times that of the same bolt in an uncoupled state. Type 304, 316, 2101, and 2205 candidate stainless steels were investigated using cyclic polarization. Each alloy showed adequate corrosion resistance in the simulated bridge bearing environment, with Type 304 showing the least resistance to localized corrosion.

Keywords: bridge, bearing, anchor bolt, corrosion, anchor rod, concrete, stainless steel
Corrosion of anchor bolts in bridge bearings presents two principal problems: (1) failure of the anchorage due to loss of bolt shear strength, and (2) loss of bearing functionality due to the build up of corrosion products. Of Georgia’s 1500 steel girder bridges, 411 (27%) were found to be experiencing anchor bolt corrosion through routine bridge inspections. Field investigations were performed at eight bridges around Georgia. Anchor bolt corrosion was found to be locally accelerated, with necking occurring at the concrete interface. This degradation is primarily due to the formation of concentration cells with the alkaline concrete embedment and to crevice effects where the build up of soil and debris occurs at the anchorage. An experimental program was developed, including long-term in-solution exposures in addition to electrochemical testing. Results of long-term concentration cell experiments indicate corrosion rates up to 4.5mpy, 4 to 6 times that of the same bolt in an uncoupled state. Type 304, 316, 2101, and 2205 candidate stainless steels were investigated using cyclic polarization. Each alloy showed adequate corrosion resistance in the simulated bridge bearing environment, with Type 304 showing the least resistance to localized corrosion.

Keywords: bridge, bearing, anchor bolt, corrosion, anchor rod, concrete, stainless steel
Product tags
Also Purchased
Picture for 51318-11288-Bridge Coating Operation and Maintenance Planning
Available for download

51318-11288-Bridge Coating Operation and Maintenance Planning

Product Number: 51318-11288-SG
Author: Russell Draper / Dr. Mekdam Nima / Frances Wee
Publication Date: 2018
$20.00

This paper describes a bridge coating operation and maintenance manual that was developed for the City of Vancouver which operates and maintains an inventory of 33 bridges with coated steel elements.
Picture for Galvanic Corrosion Risk Assessment of Bolt Materials in
Available for download

51318-10615-Galvanic Corrosion Risk Assessment of Bolt Materials in ASTM A1010 Steel Bridges

Product Number: 51318-10615-SG
Author: Nafiseh Ebrahimi / Jieying Zhang / Bruce Baldock / David Lai
Publication Date: 2018
$20.00

Galvanic coupling corrosion risk between connection bolt materials and ASTM A1010 structural steel. ASTM A1010 has recently emerged for the construction of more corrosion-resistant bridges.
Picture for 09457 Wireless and Remote Monitoring of Coated Surfaces in Corrosive Environments
Available for download

09457 Wireless and Remote Monitoring of Coated Surfaces in Corrosive Environments

Product Number: 51300-09457-SG
ISBN: 09457 2009 CP
Author: Francois Ayello, Stefan Marion, Lisandro Cunci, Narasi Sridhar and Davion Hill
Publication Date: 2009
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support