ISO 14657:2005 PDF

Name: ISO 14657:2005 — Zinc-coated steel for the reinforcement of concrete
SKU: ISO 14657:2005
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Zinc-coated steel for the reinforcement of concrete

Название (английский):

ISO 14657:2005

Zinc-coated steel for the reinforcement of concrete

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 5 января 2005 г.
Издание:: ISO IS 14657 edition 1 version 1
ICS:: 77.140.99

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Описание (английский):

ISO 14657:2005 specifies requirements for hot-dip zinc (galvanized) coating on steel reinforcing bars, wire and welded fabric used in the reinforcement of concrete. It specifies three classes, class A, class B and class C coatings, which differ in coating mass. ISO 14657:2005 does not apply to hot-dip zinc-coated reinforcements for prestressing or components of these reinforcements.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview - ISO 14657:2005 (Zinc‑coated steel for the reinforcement of concrete)

ISO 14657:2005 specifies requirements for hot‑dip zinc (galvanized) coating on steel reinforcing bars, wire and welded fabric used in concrete reinforcement. It defines three coating classes (A, B, C) by minimum zinc mass per unit area, sets finish and adherence expectations, inspection and testing rules, repair limits for damaged coating, packing/labeling requirements, and purchaser information. The standard does not apply to hot‑dip zinc‑coated prestressing reinforcements.

Keywords: ISO 14657, zinc‑coated steel, galvanized reinforcement, hot‑dip galvanizing, concrete reinforcement

Key topics and technical requirements

Coating classes and minimum zinc mass

Class A: 600 g/m2 for diameter d > 6 mm; 500 g/m2 for d ≤ 6 mm
Class B: 300 g/m2 for all diameters
Class C: 140 g/m2 for all diameters
Conversion to thickness: e (µm) = m (g/m2) / 7.14

Finish & adherence

Finish must meet ISO 1461 guidance; no sticking, dangerous spikes or tears.
Adherence verified by bend/rebend or knife tests depending on production route.

Mechanical and geometrical properties

Reinforcement must still meet the applicable product standard (e.g., ISO 6935 series, ISO 10544) after galvanizing.

Inspection & testing

Test unit definitions: inspection by cast (40 t per unit) or batch (20 t per unit).
Required tests per test unit: tensile, bend/rebend, geometry, weld shear (for fabric), and zinc mass (at least 3 samples).
Coating mass measured per ISO 1460; thickness methods referenced (e.g., ISO 2178).

Repair and damaged coating

Damaged areas must be repaired with a zinc‑rich formulation.
Max damaged (pre‑repair) surface ≤ 0.5% in any 1 m length.
Minimum repaired coating thickness specified per class (see standard).

Optional chromate treatment

Chromate passivation options and guidance are included (Annex A) to reduce cement‑zinc reactions.

Practical applications

Use ISO 14657 when specifying or procuring galvanized reinforcing bars, wire, or welded fabric for reinforced concrete elements where corrosion protection from zinc coating is required.

Useful in coastal, industrial or aggressive environments where extra corrosion resistance is needed compared with uncoated steel.

Applies to manufacturing, quality control, inspection, procurement and site acceptance preparations (note: site practice guidance is informative).

Related standards

ISO 1461 (hot‑dip galvanized coatings - specs & test methods)

ISO 1460 (gravimetric determination of mass per unit area)

ISO 6935‑1/2/3 (steel for reinforcement)

ISO 10544, ISO 15630 series, ISO 16020

ISO 14657 helps ensure consistent, testable performance for zinc‑coated reinforcement, improving durability and traceability of galvanized steel used in concrete construction.

ISO 14657:2005 PDF

Abstract

Похожие стандарты

Overview - ISO 14657:2005 (Zinc‑coated steel for the reinforcement of concrete)

Key topics and technical requirements

Practical applications

Who uses this standard

Related standards

Технические детали

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BS ISO 16020:2005

Steel for the reinforcement and prestressing of concrete. Vocabulary.