ISO 10065-1990 PDF

Full title and description

ISO 10065:1990 — Steel bars for reinforcement of concrete — Bend and rebend tests. This international standard specifies procedures for performing bend and rebend tests on steel reinforcement bars to determine the ageing and behaviour of bars after plastic deformation (bending and subsequent rebending).

Abstract

Defines the method and minimum requirements for bend and rebend testing of reinforcing steel bars used in concrete, including specimen preparation, test procedure and interpretation of results to assess the effect of plastic deformation (ageing properties) on reinforcing bars.

General information

• Status: Withdrawn / Replaced.
• Publication date: November 1990 (first edition — approved 22 November 1990 in several national catalogues).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 77.140.15 (Steels for reinforcement of concrete); 91.080.40 (Concrete structures).
• Edition / version: Edition 1 (1990-11).
• Number of pages: 3 pages (short technical procedure standard).

Scope

Specifies the bend and rebend test procedures for steel bars used as reinforcement in concrete. The standard covers the test method, specimen preparation and the evaluation of results in order to determine whether bending and rebending (plastic deformation) has produced adverse ageing or loss of ductility in reinforcing bars. It is focused on routine mechanical checks rather than full chemical or metallurgical characterization.

Key topics and requirements

• Definition of specimen types and dimensions for bend/rebend testing.
• Required bending radii, speeds and apparatus setup for reproducible tests.
• Procedure for rebending and conditioned sequence to assess ageing after plastic deformation.
• Acceptance/interpretation criteria describing how to judge changes in ductility or cracking after tests.
• Applicability limited to steel bars for concrete reinforcement (not a full material specification).

Typical use and users

Used by testing laboratories, steel manufacturers and suppliers, structural and materials engineers, construction quality control personnel, and standards committees. Typical applications are factory or site quality checks of reinforcing bars and investigations of ductility/ageing after cold work or bending operations.

Related standards

ISO 10065:1990 has been withdrawn and its subject matter is covered and expanded by the ISO 15630 series (ISO 15630-1, ISO 15630-2 and ISO 15630-3 published 2002 and later revisions). National bodies and test-method collections for reinforcing steels and concrete reinforcement (various EN and national standards) also reference equivalent bend/rebend procedures.

Keywords

steel reinforcement, reinforcing bars, rebar, bend test, rebend test, ageing properties, ductility, ISO 10065, test procedure

FAQ

Q: What is this standard?

A: ISO 10065:1990 is an ISO technical standard titled "Steel bars for reinforcement of concrete — Bend and rebend tests" that defines bend and rebend test procedures for reinforcing steel bars.

Q: What does it cover?

A: It covers specimen preparation, test apparatus and the sequence and parameters for conducting bend and rebend tests to assess the effects of plastic deformation (ageing) on reinforcing bars.

Q: Who typically uses it?

A: Testing laboratories, steel producers and suppliers, construction quality-control staff, and structural/materials engineers use the procedures for product testing, conformance checks and failure investigation.

Q: Is it current or superseded?

A: ISO 10065:1990 has been withdrawn and superseded by the ISO 15630 series (parts published in 2002 and subsequent revisions). Users should consult ISO 15630 (and relevant national/EN standards) for current, consolidated test methods.

Q: Is it part of a series?

A: ISO 10065 itself is a standalone short test-method document (first edition 1990), but its content was later incorporated into the broader ISO 15630 series covering test methods for steel reinforcement of concrete.

Q: What are the key keywords?

A: Steel bars, reinforcing steel, rebar, bend test, rebend test, ageing, ductility, ISO 10065, ISO 15630.