ESWP: International Bridge Conference®: Proprietary Session

Proprietary Session

Tuesday, June 3, 2008
1:30 pm – 5:00 pm

Chair: Kenneth J. Wright, PE, HDR Engineering, Inc., Pittsburgh, PA

IBC 08-30 - The Security Assesment of Cable Assemblies In Structures
Timothy W. Klein, PE, WireCo World Group, Kansas City, MO

The paper identifies the vulnerability of cable assemblies and their response under extreme heat conditions. The paper describes new practices being developed to increase the security and functionality of cable assemblies. High performance materials have shown to increase the functional operating temperature without affecting the mechanical properties.

IBC 08-31 - Locked Coil Cables and Their End Connections - Product Potentials and Application of Design Codes
Martin Bechtold, Bridon International GmbH, Gelsenkirchen, Germany; Barrie Mordue, Bridon International Ltd., Doncaster, United Kingdom

Locked coil cables are tension components suited to use on architectural pedestrian and cycle bridges. The galvanising with Zn95A15 performs three times better compared to zinc without the disadvantages of the much thicker class C galvanising. The design standard ASCE 1996 which is currently under revision will include locked coil cables and Zn95A15.

IBC 08-32 - Smart Sensors for Long Term Monitoring of Prestressing Cables Worldwide
John Stieb, Advitam Inc, Sterling, VA; Gilles Hovhanessian, Advitam, Velizy, France

Actual methods used to monitor cables are based on strain measurement and sensors and sufer from strong limitations. New sensors have been developed and are currently applied in Europe. They are based on magneto elastic phenomenon and allow a direct measurement of the force without any contact with the cable.

IBC 08-33 - Improving Rating Accuracy in Visual Inspections via Software
Jeremy Shaffer, Michael Schellhase, InspectTech, Pittsburgh, PA

Conducting visual bridge inspections and generating quality reports can be a tedious process prone to errors and inefficiencies. This presentation will cover how software can effectively be used to streamline the process from the field to report generation to integration into an asset management program.

IBC 08-34 - Ultra-Weatherable Fluoropolymer Coatings for Bridges
Winn Darden, AGC Chemicals Americas, Simi Valley, CA; Takashi Takayanagi, AGC Chemicals, Tokyo, Japan

Fluoropolymer resins have been used to make ultra-weatherable top coats for steel and concrete bridges. Coating life can exceed 60 years with excellent color and gloss retention. Because of their performance, the Japanese government requires the use of these coatings on all bridges. Life cycle costs are substantially reduced using fluoropolymer coatings.

IBC 08-35 - SafeLane Overlay Performance Testing
Wilfrid Nixon, Asset Insight Technologies, Iowa City, IA; Bob Persichetti, Cargill SafeLane, York, PA

This paper reports two winters (2005-2006 and 2006-2007) of results on the performance of the SafeLane overlay on 26 different highway structures (20 bridges) around the United States. The study examines the safety and operational benefits of the overlay. In particular, the safety benefits were significant.

IBC 08-36 - One-Coat Paint System That Encapsulates Lead-Based Paint and Eliminates Sandblasting
J.E. Pritchett, Superior Products International II, Inc., Shawnee, KS; Sandra Hubbert, Superior Products International DOT Group, Charleston, SC

Encapsulation of lead-based paint and existing rust with minimum surface preparation and no regulated sandblasting can save millions at a time when transportation budgets are being reduced. Allocating monies toward as many bridges as possible is the key to addressing "at risk" inventories that fall outside the established priority rankings.

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