ACI 349 Code Change to Use the Gr.80 Headed Deformed Bars in Nuclear Power Plant Structures

Gr.80 확대머리철근의 원전구조물 적용을 위한 ACI 349 코드개정에 관한 연구

Generally, a lot of reinforcements are used in nuclear power plant concrete structures, and it may cause several potential problems when concrete is poured. Because of the congestion caused by hooked bars, embedded materials, and other reinforcements, it is too difficult to pour concrete into structural member joint area. The purpose of this study is to change ACI 349 Code for using the large-size(57mm) and high-strength(Gr.80) headed deformed bars instead of standard hooked bars in nuclear power plant concrete structures in order to solve the congestion problems.