Rebar couplers are used in reinforced concrete structures to replace normal Rebar lap joints. The couplers are also suitable for use in reinforced concrete columns and walls. Each rebar coupler consists of a piece of rebar equipped with thread and coupler sleeve at the right end as viewed in the direction of installation. In construction joints, Rebar Couplers can be used to replace all pieces of rebar going through the formwork.
Reinforced concrete design and construction practice has historically focused on the use of lap splicing as a method of transferring load between reinforcement bars.
This relies on the load being transferred from one rebar, through the surrounding concrete and into the adjacent lapped rebar. However, the lapping of reinforcement is not always the most appropriate splicing method and there are many situations where the use of mechanical rebar couplers is more desirable from a design perspective, more convenient from a construction perspective, or both.
JB Rebar Couplers are used for joining rebars with full tension capacity. The ends of bars to be joined are provided with threads, and the bars are joined using a coupler sleeve that transfers the force on the rebar across the connection.
JB-9 REBAR COUPLERS – BAR LOCK Rebar coupler, sometimes also known as mechanical splices, are used as an alternative to traditional lap splices in concrete. They transmit the rebar load directly from one rebar to another without relying on concrete bond, concrete strength, or the condition of the concrete surrounding the rebar and coupler.
JB Engineering make Rebar Couplers create a continuity of reinforcement which is not reliant on the quality or integrity of the concrete. Their use creates less rebar congestion, more convenient and often safer site practice as well as reducing the amount of steel used, approximately 25% steel cost is saved in any project/s. While different performance levels exist for rebar couplers, a guaranteed “bar break” coupler means that there will ultimately be no brittle failure in a ‘beyond design” event and the full ductility of the rebar will be maintained, a feature which is recommended in safety critical applications or if the structure could be subject to impact damage or a seismic event.
Weldable couplers provide a quick and easy solution for connecting reinforcing steel bar (rebar) to structural steel sections or plates. The coupler is internally taper threaded on one end with the other end or exterior surface prepared for welding.
A Steel Rebar Coupler is used to couple or joins two pieces of steel together in the building. Steel coupler consists of a sleeve that is threaded into which the bars to be joined can be screwed into. The coupler is built as screw connection reinforcement on a framework of working joints in concrete
Tapered Thread Rebar Couplers are suitable for the majority of applications which require the joining of rebars.They are normally supplied fitted to the end of the threaded bar and require only the engagement and tightening of the adjoining bar on site using a calibrated torque wrench.
MBT Rebar Couplers require neither bar end preparation to form threads nor bar rotation to effect installation. The bars are supported within the coupler by two serrated saddles. As a series of lockshear bolts are tightened to a predetermined torque, they are embedded into the bar.