A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Commercialization of NuCu Steel
Under FHWA and ITI sponsorship Northwestern University previously developed for bridge construction application a 70-Ksi-yield steel with improved fracture, welding and weathering characteristics. This steel NuCu 70 steel is now covered by ASTM A710B Standard. A bridge in Lake County, IL near Lake Villa over railroad tracks on IL Rt. 83 was constructed from 500 tons of steel plates produced by International Steel Group (ISG, now Mital Steel USA). The steel subtantially exceeded ASTM A709 Standard for a 70 ksi yield strength bridge steel. While the Standard requires a Charpy Impact energy minimum of 35 ft-lbs at-10 deg F, the NUCu plates tested at 150 ft-lbs. The girders were welded at Industrial Steel Construction, Inc., without preheating or post heating. Because of substantially better weathering characteristics than other steels used in bridges the girders were not painted. This gave significant cost savings and is expected to substantially reduce the cost of future bridge maintenance. In addition, unpainted girders do not require velvet-glove handling during transportation from bridge fabricator to construction site and during bridge assembly thus further reducing construction costs.
Commercialization of NuCu Steel
Under FHWA and ITI sponsorship Northwestern University previously developed for bridge construction application a 70-Ksi-yield steel with improved fracture, welding and weathering characteristics. This steel NuCu 70 steel is now covered by ASTM A710B Standard. A bridge in Lake County, IL near Lake Villa over railroad tracks on IL Rt. 83 was constructed from 500 tons of steel plates produced by International Steel Group (ISG, now Mital Steel USA). The steel subtantially exceeded ASTM A709 Standard for a 70 ksi yield strength bridge steel. While the Standard requires a Charpy Impact energy minimum of 35 ft-lbs at-10 deg F, the NUCu plates tested at 150 ft-lbs. The girders were welded at Industrial Steel Construction, Inc., without preheating or post heating. Because of substantially better weathering characteristics than other steels used in bridges the girders were not painted. This gave significant cost savings and is expected to substantially reduce the cost of future bridge maintenance. In addition, unpainted girders do not require velvet-glove handling during transportation from bridge fabricator to construction site and during bridge assembly thus further reducing construction costs.
Commercialization of NuCu Steel
M. Fine (author) / S. Vaynman (author)
2009
9 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Nonferrous Metals & Alloys , Highway bridges , Construction , Structural steel , Fracture properties , Weathering , Yield strength , Corrosion resistance , Carbon , Weldability , High performance steels , Thermomechanical processing
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