Abstract:
Abstract: Headed reinforcement is a relatively new product and has not been used in many applications. Headed
reinforcing bars have been extensively used in the construction of offshore oil platforms where hooked bars have
traditionally been used to anchor longitudinal reinforcement or bars bent for ties and transverse reinforcement.
Hooks and bent-bar ties create a large amount of congestion in the reinforcing cage which leads to difficulties
during construction. Using headed reinforcement removes the tail extensions of hooks and allows fewer larger
bars to be used, greatly reducing the congestion of the reinforcing cage. It has been found that the use of headed
reinforcement can greatly decrease the time needed to erect the reinforcement resulting in large cost savings.
Headed reinforcement has also been used in a few projects for strengthening and repairing footings of highway
structures.
A total 81 Pullout test were performed to the study of Bond behavior of Headed reinforcement bar in concrete
with different Embedment length with various diameters of bars, various grade of concrete and various sizes of
cubes.
In this research project, it is proposed to execute experimental work by using headed reinforcement bars. The
effect of different parameters like embedment length, head shapes and concrete grades, threaded headed
reinforcement bars can be study. The results will be used to develop design recommendations for the application
of headed reinforcement bars.
