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KAWASAKI STEEL TECHNICAL REPORT
No.28 ( June 1993 )
Special Issue on Chemicals and
New Materials and Construction Materials

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Effects of High Strength Transverse Reinforcement on the Ductile Behavior of Reinforced Concrete Members -Development of Riverbon MULTI SPIRAL HOOPs-

Atsushi Nakazawa, Masataka Shibata, Ikuo Watanabe, Tamaki Shiraishi, Juro Mihara
Synopsis :
A new type of transverse steel reinforcement with 1 275 N/mm2 yield strength was developed for steel-reinforced concrete members. This consists of a peripheral hoops and internal hoops (named Riverbon MULTI SPIRAL HOOP), which are made from one-piece steel bar without breaks or welding. Experimental studies were carried out on square concrete columns, and the shear failure and flexural failure behavior of the new reinforcement were compared with those of conventional reinforcement. Riberbon MULTI SPIRAL HOOP reinforcement showed good ductility and greater efficiency in fixing on the construction site. This reinforcement enables earthquake-resistant reinforced concrete buildings to be constructed more economically.
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