Influential Parameters for Headed Bars in RC Beam-Column Joint

RC beam-column joint, a critical region of a framed system often does not achieve adequate strength due to poor detailing and workmanship. Conventional anchors such as straight and hooked bars which anchor the flexural longitudinal bar terminating at the joint, have many design and construction drawbacks like steel congestion, leading to honey combing in concrete and difficulties in implementation. This led to the development of headed bars which are highly advocated by researchers, as they provide an alternative solution to conventional anchors. Various parameters such as head geometry, embedment depth, grade of concrete, etc. influence the behaviour of headed bar in the joints. This study presents a review on headed bar for the development of proper guidelines.