Testing Mechanical and Welded Rebar Splices

California Test Method (CT 670) applies to the testing procedures that determine mechanical properties of spliced reinforcing steel. The test consists of the following phases:

  1. Physical Properties and Preparation: Each sample submitted for testing shall conform to specific requirements.
  2. Slip Test: procedure for determining inherent axial displacement within the mechanical coupler.
  3. Tensile Test: This is required for all mechanical and welded splices and must be performed in accordance with ASTM A370. A splice is a physical device or mechanism for joining reinforcing steel, as defined in Caltrans Standard Specifications, Section 52. Mechanical non-lap splices and resistance welded splices are the most common types encountered.

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