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.
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63 NACE INTERNATIONAL: VOL. 56, NO. 11 MATERIALS PERFORMANCE NOVEMBER 2017 Venture, a major partner in the multi-year construction of the St. Croix Crossing, chose to extensively apply a low-toxicity corrosion inhibitor powder manufactured by Cortec Corp. (Saint Paul, Minnesota) for corrosion protection of ferrous metals in recessed areas, interior cavities, and voids. Corrosion inhibitors have been used to protect PT strands in many bridge projects across the country, including the Wakota Bridge in nearby Saint Paul, Minnesota. e powder corrosion inhibitor was fogged through post-tension ducts using a low-pressure air hose after PT strands were placed in the duct. e powder vaporized and adsorbed on metal surfaces to form a protective molecular layer on the tendons. e layer helped reduce corrosion by inhibiting interaction with corrosive elements such as air, moisture, and chlorides, and discouraging both cathodic and anodic corrosion reactions from taking place on the tendons. Little or no surface preparation was required before applica- tion, and the powder did not need to be flushed out before grouting. More than 40 extradosed bridges have been built around the world in the past 20 years, with the majority of the them built in Japan. e St. Croix Crossing, which opened on August 2, 2017, is only the fourth extradosed bridge to be built in the United States. e 5,000-ft (1,524-m) long structure spans the St. Croix River and carries four lanes of traffic in each direction. It is 100-ft (31-m) wide and varies between 110 and 150 ft (34 and 46 m) above the water, allowing boat traffic to freely move beneath it. Construction began in 2012, and more than 400 men and women from Minnesota and Wisconsin labored on the project. ere are more than 42 million lb (19 million kg) of concrete in the bridge, and its 1.1 million ft 2 (102,193 m 2 ) of surface area required more than 22,000 gal (83,270 L) of paint to cover it. is bridge replaces the Stillwater Lift Bridge, which was dedicated more than 80 years ago. Sources: Minnesota Department of Transportation, www.dot.state.mn.us, and Cortec Corp., www.cortecmci.com. NACE NEW ORLEANS SECTION 19TH ANNUAL EDUCATION WEEK DECEMBER 4-9, 2017 • NEW ORLEANS AIRPORT HILTON nace.org/nolaedu to register for NACE Section Local Courses NACE NEW ORLEANS SECTION COURSES DATES PRICE INSTRUCTOR Corrosion in Oil and Gas Production (COG) December 4-6 $400 Charlie Speed, Consultant Corrosion Under Insulation (CUI) December 4-6 $500 Peter Bock, CUI Consultant Rectifier School (RS) December 4-5 $250 Jim Bradford, Corrpro Oilfield Operator Chemical School (OOCS) December 7-8 $300 Charlie Speed & 15 Other Experts GENERAL NACE EDUCATION COURSES DATES PRICE NACE CERTIFIED INSTRUCTORS Basic Corrosion (BC) December 4-8 For pricing and to register for these NACE General Education courses, go to nace.org/ nolacourses Raul Castillo P.E. Designing For Corrosion Control (DCC) December 4-8 Jerry Byrd Corrosion in Refining Industry (CCRI) December 4-8 Ray Quinter Protective Coatings Specialist (PCS-1 BASIC) December 4-6 Kat Coronado Protective Coatings Specialist (PCS-2 ADVANCED) December 7-9 Kat Coronado Students are responsible for hotel reservations. Contact the New Orleans Airport Hilton at +1 504-469-5000 or 1 800-445-8667 and ask for the NACE Event Rate Code: NAC. Room rate is $133/night. For pricing and to register for NACE General Education courses, go to nace.org/nolacourses For information about New Orleans Section Events, go to nace.org/nola For questions, call Charlie Speed at +1 504-400-7878 I N T E R N A T I O N A L