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Deep Guide Testing of Steel Reinforcing Bar

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Many standards that specify mechanical properties and/or testing requirements for steel reinforcing bar (rebar). Some of the most common include ASTM A370, ISO 15630-1, BS 4449, AS/NZS 4671, JIS G 3112, GB 1499, and ACI 318. These standards include testing requirement that are specific to determining rebar tensile and bend properties.


Typical results include Yield Point (ReH, Drop of Beam, Zero Slope), Proof Strength or Offset Yield Strength (Rp0.2, 0.2% Offset Yield), Tensile Strength (Rm), Elongation at Maximum Force (Ag, Agt) and Elongation after Fracture (A). The basic test and challenges are similar regardless of the specific standard being followed.


Rebar Coupler Tensile Testing

Seismic testing of couplers for slippage requires cycling the specimen.

Comprised of two pieces of rebar joined by a coupler.

Tests can be tension-tension cycling only or demand through-zero cycling like the requirements of AC133, CS2, or ISO 15835.


Related test standard of the Steel Reinforcing Bar: 

ASTM A370Standard Test Methods and Definitions for Mechanical Testing of Steel Products
ISO 15630-1Steel for the reinforcement and prestressing of concrete -- Test methods -- Part 1: Reinforcing bars, wire rod and wire
BS 4449Specification for carbon steel bars for the reinforcement of concrete
AS/NZS 4671Steel reinforcing materials
JIS G 3112Steel bars for concrete reinforcement
ACI 318Building Code Requirements for Structural Concrete and Commentary
GB/T 1499.3Steel for the reinforcement of concrete
Deep Guide Testing of Steel Reinforcing BarDeep Guide Testing of Steel Reinforcing Bar
Deep Guide Testing of Steel Reinforcing BarDeep Guide Testing of Steel Reinforcing Bar


Related Standard

ASTM A370 Test method for mechanical testing of steel

ASTM A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products


ASTM A370 test methods cover procedures and definitions for the mechanical testing of steels, stainless steels, and related alloys. The various mechanical tests herein described are used to determine properties required in the product specifications. Variations in testing methods are to be avoided, and standard methods of testing are to be followed to obtain reproducible and comparable results. In those cases in which the testing requirements for certain products are unique or at variance with these general procedures, the product specification testing requirements shall control.


Covering tests like Tension, Bend, Hardness, Brinell, Rockwell, Portable, and Impact, each catering to distinct aspects of mechanical property assessment. Moreover, it accommodates annexes for specific product types, including Bar Products, Tubular Products, Fasteners, Round Wire Products, and more, ensuring a holistic approach to testing.


ASTM E290 Metal Bend testing of materials ductility

ASTM E290 Standard Test Methods for Bend Testing of Material for Ductility


ASTM E290  test methods cover bend testing for ductility of materials. Included in the procedures are four conditions of constraint on the bent portion of the specimen; a guided-bend test using a mandrel or plunger of defined dimensions to force the mid-length of the specimen between two supports separated by a defined space; a semi-guided bend test in which the specimen is bent, while in contact with a mandrel, through a specified angle of bend or to a specified inside radius of bend (r) measured while under the bending force; a free-bend test in which the ends of the specimen are brought toward each other, but in which no transverse force is applied to the bend itself and there is no contact of the concave inside surface of the bend with other material; a bend-and-flatten test, in which a transverse force is applied to the bend such that the legs make contact with each other over the length of the specimen.

ASTM E488 Test Methods for Strength of Anchors in Concrete Elements

ASTM E488/E488M Standard Test Methods for Strength of Anchors in Concrete Elements


These test methods address the tensile and shear strengths of post-installed and cast-in-place anchors in test members made of cracked or uncracked concrete. Loadings include quasi-static, seismic, fatigue and shock.  These test methods are intended for use with post-installed and cast-in-place anchors designed for installation perpendicular to a plane surface of a test member.


ASTM E488 covers the procedures for evaluating the tensile, shear, fatigue, shock, seismic, and static strengths of post-installed and cast-in-place anchorage systems in concrete ormasonry structural elements. These test procedures are meant to yield information that can beutilized to derive design data and standards for qualifying anchors or anchorage systems, aswell as for a specific anchorage device used in a structural member of concrete, masonry, andrelated materials. MaTestlab is one of the best testing service providers, with the best networkof testing laboratories in the UsA to carry out ASTM E488 tests for our clients. To guarantee thatthe test results are repeatable, ASTM E488 must be adhered to.  

ASTM A1061, A416 Multi-Wire Steel Prestressing Strand Tensile Elongation Test

ASTM A1061 tensile test for breaking elongation stress relaxation on steel wire deals with the standard types and grade requirements of seven-wire, uncoated steel strands for use in the construction of pre-tensioned and post-tensioned pre-stressed concrete. 

The two types of strand specified by the ASTM A1061 specification are low-relaxation and stress-relieved (normal relaxation). The base metal shall be made of carbon steel and shall undergo stranding and continuous thermal and mechanical treatment. Final product requirements of ASTM A1061 shall be furnished on reels or in reelless packs for packaging and marked with two strong tags for identification. The requirements specified in ASTM A1061 shall also be applicable for pre-stressed ground anchor construction.

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