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Performance of concrete bars on industrial platform substations
The issues related to work done on a centrifuged reinforced concrete bar from a 220/110-kV transformer substation that was replaced after 35 years of operation in a highly aggressive chemical environment are discussed. The concrete bars from substations located on industrial platforms were tested. The results obtained with the tensile stress testing of several centrifuged reinforced concrete bars with the same defects were corroborated including those located in the area of maximum bending moment in the middle of the opening. The data obtained helped to access the vulnerability of concrete bars to the climate and a chemically aggressive environment, and helped to determine the conditions under which bars can be maintained and when they need to be replaced. Besides this, the microstructure analysis was performed on the section of the reinforcing bar taken from the concrete bar where an important diameter reduction was recorded, which showed fine ferrite-pearlitic microstructure of steel and many corrosion craters of variable depth.
Performance of concrete bars on industrial platform substations
The issues related to work done on a centrifuged reinforced concrete bar from a 220/110-kV transformer substation that was replaced after 35 years of operation in a highly aggressive chemical environment are discussed. The concrete bars from substations located on industrial platforms were tested. The results obtained with the tensile stress testing of several centrifuged reinforced concrete bars with the same defects were corroborated including those located in the area of maximum bending moment in the middle of the opening. The data obtained helped to access the vulnerability of concrete bars to the climate and a chemically aggressive environment, and helped to determine the conditions under which bars can be maintained and when they need to be replaced. Besides this, the microstructure analysis was performed on the section of the reinforcing bar taken from the concrete bar where an important diameter reduction was recorded, which showed fine ferrite-pearlitic microstructure of steel and many corrosion craters of variable depth.
Performance of concrete bars on industrial platform substations
Verhalten von Bewehrungsstäben auf industriellen Plattfomen von Umspannwerken
Frumuselu, Doina (author) / Giurconiu, Cristian (author)
Materials Performance ; 46 ; 58-62
2007
5 Seiten, 1 Quelle
Article (Journal)
English
Case History: Performance of Concrete Bars on Industrial Platform Substations
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