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A platform for research: civil engineering, architecture and urbanism
Effect of silicon on uniform elongation of 1420 MPa grade steel bar for prestressed concrete
Recent anti-earthquake design is on the basis of ultimate state design, which aims at absorption of earthquake's energy by plastic deformation of buildings. From this point of view, it is required that deformability of buildings' pile should be improved much more. Inside pile, steel bar for prestressed concrete (PC-bar) is used for reinforcement. One of the main factors that affect deformability of the pile is uniform elongation of PC-bar. Therefore it is pointed out that the PC-bar with high uniform elongation is indispensable. It is known that high uniform elongation is attained by dual phase in the case of lower strength steels. But study which treats with high strength steels such as 1420 MPa grade PC-bar is quite few. In this paper, the authors focus on Si and study the effect of Si on ductility of high strength steels. Finally it could be shown that uniform elongation was improved to 5 % by 3.5 % Si addition. Improvement on uniform elongation by Si addition is mainly attributed to appearance of ferrite and refinement of carbide.
Effect of silicon on uniform elongation of 1420 MPa grade steel bar for prestressed concrete
Recent anti-earthquake design is on the basis of ultimate state design, which aims at absorption of earthquake's energy by plastic deformation of buildings. From this point of view, it is required that deformability of buildings' pile should be improved much more. Inside pile, steel bar for prestressed concrete (PC-bar) is used for reinforcement. One of the main factors that affect deformability of the pile is uniform elongation of PC-bar. Therefore it is pointed out that the PC-bar with high uniform elongation is indispensable. It is known that high uniform elongation is attained by dual phase in the case of lower strength steels. But study which treats with high strength steels such as 1420 MPa grade PC-bar is quite few. In this paper, the authors focus on Si and study the effect of Si on ductility of high strength steels. Finally it could be shown that uniform elongation was improved to 5 % by 3.5 % Si addition. Improvement on uniform elongation by Si addition is mainly attributed to appearance of ferrite and refinement of carbide.
Effect of silicon on uniform elongation of 1420 MPa grade steel bar for prestressed concrete
Einfluß von Silicium auf die Gleichmaßdehnung von Stabstahl der Festigkeitsklasse 1420 MPa für vorgespannten Stahlbeton
Titel japanisch
Yokota, T. (author) / Shiraga, T. (author) / Yamashita, E. (author) / Mizoguchi, S. (author)
1999
7 Seiten, 17 Bilder, 2 Tabellen, 19 Quellen
Article (Journal)
Japanese
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