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ISO 15835–1:2018 - Standard - Steel for the reinforcement of concrete – Reinforcement couplers for mechanical splices of bars ISO 15835 & NF 350-20   IS O 15835 & NF 350-20   Type of Test Required Why ! (Purpose of the test) What is the Criteria ? Static tensile strength test Tensile strength of the Rebar joint (Rebar to Coupler Splice) joint   >ReH(Rm/ReH) ReH - Refers to beginning of yield point elongation Rm - Tensile Strength     Slip Test   Used to make sure that the plastic movement (slip) between the reinforcement bars with in the Mechanical Splice, when Loaded in tension   <=0.10 mm after applying A minimal force of 0.7ReH (=bar’s nominal yield stress) is used to measure slip at the splice ReH - Refers to beginning of yield point elongation   Uniform Cyclic Load Test ...

What are Reinforcement Coupler's Reinforcement Coupler's are used to join Reinforcement bar's that are used in Reinforced concrete structures, as a replacement for conventional lapping method of joining Reinforcement bar's. Mechanical Splice / Coupler's are  mechanical connections between two pieces of reinforcing steel that enable the bars to behave in a manner similar to continuous lengths of reinforcing steel bars. Mechanical splice join rebar end-to-end, provides many advantages of a continuous piece of rebar. Mechanical Splice  system is used in connecting Reinforcement Bar of respective/ different diameter using the respective Coupler's as per applications and standards/criteria. All Coupler Standards  IS 16172 : 2014                 Click here.. ACI 318 / ACI 133              Click here.. BS 8110                         ...