Overlapping the rebars & creating a joint is not always an appropriate means of connecting TMT bars. The overlapping technique can be time consuming in terms of design and installation and can lead to greater congestion within the concrete because of the increased amount of TMT used.
The ABS Rebar couplers can simplify the design and construction of reinforced concrete and reduce the amount of reinforcement required.
Overlappings are dependent upon the concrete for load transfer. For this reason any degradation in the integrity of the concrete could signiﬁcantly aﬀect the performance of the joint. The strength of a mechanical splice
is independent of the concrete in which it is located and will retain its strength despite loss of cover as a result of impact damage or seismic event.