Materials Performance is the world's most widely circulated magazine dedicated to corrosion prevention and control. MP provides information about the latest corrosion control technologies and practical applications for every industry and environment.
Issue link: http://mp.epubxp.com/i/889936
NACE INTERNATIONAL: VOL. 56, NO. 11 10 NOVEMBER 2017 MATERIALS PERFORMANCE FROM THE EDITOR'S DESK NACE INTERNATIONAL: VOL. 56, NO. 11 w w w.materialsper formance.com EDITORIAL MA N AG I N G E D I TO R - I N - C H I E F Gretchen A. Jacobson E D I TO R Kathy Riggs Larsen T E C H N I C A L E D I TO R S Norman J. Moriber Jack Tinnea, Tinnea Associates, LLC T E C H N I C A L E D I TO R E M E R I T U S John H. Fitzgerald III, FNACE S TA F F W R I T E R Ben DuBose P R O D U C T MA N AG E R, Husna Miskinyar E L E C T R O N I C M E D I A GRAPHICS E L E C T R O N I C P U B L I S H I N G Teri J. Gilley CO O R D I N ATO R G R A P H I C S D E S I G N E R Michele S. Jennings ADMINISTRATION C H I E F E X E C U T I V E O F F I C E R Rober t (Bob) H. Chalker G R O U P P U B L I S H E R William (Bill) Wageneck A S S O C I AT E P U B L I S H E R Eliina Lizarraga ADVERTISING S A L E S MA N AG E R Diane Gross diane.gross@nace.org, +1 281-228-6446 S A L E S D E V E LO P M E N T Tiffany Krevics R E P R E S E N TAT I V E tiffany.krevics@nace.org, +1 281-228-6411 S A L E S S P E C I A L I S T Kaci Lamb kaci.lamb@nace.org, +1 281-228-6459 K E Y ACCO U N T E X E C U T I V E Eric Freer eric.freer@nace.org, +1 281-228-6292 ACCO U N T E X E C U T I V E S Jody Lovsness jody.lovsness@nace.org, +1 281-228-6257 Leslie Whiteman leslie.whiteman@nace.org, +1 281-228-6248 M E D I A A DV E RT I S I N G Brenda Nitz CO O R D I N ATO R brenda.nitz@nace.org, +1 281-228-6219 R E G I O N A L A DV E RT I S I N G S A L E S The Kingwill Co. R E P R E S E N TAT I V E S Chicago/Cleveland/ New York/U.S. West Coast Area– jim@kingwillco.com, +1 847-537-9196 NACE International Contact Information Tel: +1 281-228-6200 Fax: +1 281-228-6300 Email: Firstser vice@nace.org Web site: w w w.nace.org EDITORIAL ADVISORY BOARD Zahid Amjad, FNACE Walsh University Susan Borenstein General Dynamics Electric Boat Raul A. Castillo Consultant Ir vin Cotton Ar thur Freedman Associates, Inc. David D. He Corrpro Jerr y Holton Specialty Polymer Coatings USA, Inc. W. Brian Holtsbaum Corsult Associates (1980), Ltd. Russ Kane iCorrosion, LLC Ernest Klechka CITGO Petroleum Corp. Kur t Lawson Mears Group, Inc. Lee Machemer Jonas, Inc. John S. Smar t III John Smar t Consulting Engineer M ore than likely all of us have driven over a highway bridge at some point in our lives. I have driven over quite a few. Most have been ordinary; but some have been quite unique, like the Chesapeake Bay Bridge-Tunnel in Virginia Beach, Vir- ginia. I don't normally worry about bridge integrity while driving, but I know that effective mitigation of bridge corrosion is on the minds of many NACE International members. According to the U.S. Federal Highway Administration (FH WA) report on bridge condition for 2016, out of 614,387 bridges in the United States, 48,559 are reported to be in poor condition, 274,306 are in fair condition, and 291,412 are in good condi- tion, w ith 56,000 reported to be structur- ally def icient, which means the deck, superstructure, substructure, or culvert is rated in "poor" condition—a rating of 0 to 4 on the National Bridge Inventor y rating scale—due to advanced section loss, deterioration, spalling, or scour. Corrosion is a leading factor in bridge degradation, and NACE reports the annual direct cost of highway bridge cor- rosion is estimated to be $13.6 billion. In its Bridge Preservation Guide (FHWA-HIF-1102), the FHWA notes that more than 30% of existing bridges have exceeded their 50-year theoretical design life and require various levels of repairs, rehabilitation, or replacement. To be suc- cessful, it says, a bridge program should pursue a balanced preservation and replacement approach and utilize cost- effective strategies and actions to maxi- mize the useful life of bridges. Timing is important. Over the years, increasing travel demands, limited funding, and ris- ing costs of materials and labor have exac- erbated the need for preservation manage- ment. Delaying or waiving needed preservation treatments, however, can only aggravate worsening conditions and expand the treatment activity from pres- ervation to replacement. The guide emphasizes, however, that appropriate bridge preservation treatments and activi- ties, applied at the right time, can extend a bridge's useful life at lower lifetime cost. NACE members are at the forefront of research and development activities that are identifying various bridge corrosion issues and cultivating new technologies to diminish them. Their work ranges from evaluating concrete treatments with inhibitors as a deterrent to chloride intru- sion (see the article, "Organofunctional Silane Corrosion Inhibitor Surface Treat- ment Protects Concrete," on p. 52) to devel- oping an electrodeposited nickel-cobalt alloy coating to protect bolts from hydro- gen embrittlement and stress corrosion cracking (see the article, "Nickel-Cobalt Alloy Coating Protects Steel Fasteners from Hydrogen," on p. 19). Researchers are studying new zinc-rich primers enhanced with nanoparticles to extend the corrosion protection of steel bridge structures (see the article, "Nanoparticles Enrich Zinc- Rich Primer for Highway Bridges," on p. 47), and investigating the root cause of severe steel pile foundation corrosion that led to vertical displacement of the pier and sagging of the bridge deck (see the article, "Unique Corrosion Mechanisms Behind Leo Frigo Bridge Failure," on p. 14). The American Society of Civil Engi- neers, in its Infrastructure Report Card for 2017, gave bridges a grade of C+ and noted that solutions such as increasing govern- ment funding to reduce the number of structurally deficient bridges, decrease the maintenance backlog, and address older bridges nearing their end-of-life design would help to raise the grade. When it comes to supplying corrosion-control solu- tions for the world's bridges in need, I say NACE members involved in bridge preser- vation activities have earned an A+. Kathy Riggs Larsen Editor Tackling Bridge Corrosion Issues