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ASTM A615 Testing of Steel Bars for Concrete Reinforcement

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ASTM A615/A615M : Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

Steel reinforcing bars are designed to absorb the stress and weight of concrete structures such as bridges and buildings. ASTM D615 is a testing standard that provides dimensional, chemical, and physical requirements for plain and deformed carbon steel bars manufactured for concrete reinforcement. Deformed bars include surface protrusions to prevent longitudinal movement after being placed in concrete, while plain bars are smooth sided. These products may be supplied in cut lengths or coils, and are engineered for the express purpose of building and construction. 


While ASTM A615 references ASTM A370 and ASTM E290 for tensile and bend testing respectively, this standard includes specific procedures relevant to performing these tests on plain and deformed bar. These tests are performed in order to determine physical properties such as strength, elongation, and satisfactory surface condition after bending. Notably, bars produced in accordance with ASTM A706/A706M are also considered to be in conformance to this standard. 

ASTM A615 Testing of Steel Bars for Concrete Reinforcement

Test Procedure:

The specimen is manufactured as per the specified measurements, and limits are specified to test its performance. The specimen is observed for any deformation and its chemical composition is determined. The tensile properties of the bars are studied. The tension and bent tests are performed. The results are verified by retesting the sample and presented as per international standards.


Test Data:

The method covers the certification, sampling, testing, and inspection of the specimen within the set limits. 


Related Standard

ISO 15630-3 Testing of Prestressing Steel Strands Relaxation, Fatigue, Tensile testing

ISO 15630-3 Steel for the reinforcement and prestressing of concrete — Test methods — Part 3: Prestressing steel

This standard specifies test methods applicable to prestressing steel (bar, wire or strand) for concrete.

ISO 15630-3, ASTM A416 and ASTM A1061 test standards offer guidelines for testing steel strands. Manufacturers of steel strands are required, through product standards, to test their products using both static and dynamic conditions.

ASTM A185, A497 welded steel wire mesh Shear Test for concrete reinforcement

ASTM A497 and A185 testing fixtures are used to determine the shear strength of welded steel wire mesh. There is no substantial difference between the two standards ASTM A 497 and ASTM A 185, so they use the same testing fixture.


Cut a welded joint from the steel wire mesh, with the transverse wire extending approximately 1 inch on each side of the longitudinal wire. The longitudinal steel wire extends 2 inches or more above the joint and approximately 5 inches below the joint. The fixture is adjustable to accommodate steel wires of different diameters. The V-shaped groove roller restricts the longitudinal steel wire to keep the transverse steel wire at the top of the support platform. There is a threaded hole on the top of the device. In this way, the connection with the crossbeam of the tensile testing machine is ensured. The bottom of the longitudinal steel wire is straightened until the weld fails, and this failure load will be reported.

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 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.


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