ISO 15835-1:2018
(Main)Steels for the reinforcement of concrete - Reinforcement couplers for mechanical splices of bars - Part 1: Requirements
Steels for the reinforcement of concrete - Reinforcement couplers for mechanical splices of bars - Part 1: Requirements
This document specifies requirements for couplers for the mechanical splicing of steel reinforcing bars. More onerous requirements can be specified by the customer. This document is applicable to the continuous production of coupler components. It is intended to be used with adequate control measures for the processing of reinforcing bars, i.e. the production of the mechanical splice. This document specifies requirements for couplers used for mechanical splices in reinforced concrete structures under predominantly static loads. It specifies additional requirements for couplers used in structures subject to high-cycle elastic fatigue loading and/or low-cycle elastic-plastic reverse loading. NOTE ISO 15835-3 specifies the quantity of tests. Compression-only couplers such as end-bearing sleeves are not covered by the ISO 15835 series.
Aciers pour l'armature du béton — Coupleurs d'armature destinés aux raboutages mécaniques de barres — Partie 1: Exigences
General Information
Relations
Overview
ISO 15835-1:2018 specifies performance and manufacturing requirements for reinforcement couplers used to make mechanical splices of steel reinforcing bars in reinforced concrete. The standard focuses on couplers produced in continuous manufacturing and is intended to be used with adequate bar processing and quality control. It covers couplers for structures under predominantly static loads, and provides additional requirements when couplers are used in high‑cycle fatigue or low‑cycle (seismic) reverse loading applications. Note: compression‑only couplers (e.g., end‑bearing sleeves) are not covered.
Key Topics and Technical Requirements
- Scope of verification: Properties of a coupler are verified via testing of the complete mechanical splice (clause 5).
- Categories of splices:
- B (Basic) – strength, ductility, slip under static loads
- F (Fatigue) – adds high‑cycle fatigue requirements
- S (Seismic) – adds low‑cycle elastic‑plastic reverse loading requirements
(If tested for both F and S, classification FS is permitted.)
- Strength and ductility: Mechanical splice tensile strength must meet the requirements referenced to the reinforcing bar product standard; ductility of the spliced bar outside the splice shall be at least 0.7 × Agt (specified characteristic elongation). If Agt is not specified, a minimum of 3% elongation is required (clause 5.3).
- Slip under static forces: Slip is measured by one of two defined test options; the median slip of tests shall not exceed 0.10 mm, with outliers no more than 0.05 mm above the maximum. Longer couplers (>100 mm) have special considerations (clause 5.4).
- Fatigue and seismic performance: Optional, but specified test programmes and acceptance criteria exist for high‑cycle fatigue and low‑cycle reverse loading (clauses 5.5–5.6).
- Traceability & installation: Requirements for marking, batch/lot traceability and manufacturer installation instructions are specified (clause 5.7–5.8).
- Testing references: Mechanical splice tests follow ISO 15835-2; reinforcing bar tests reference ISO 15630-1.
Applications
- Ensures reliable mechanical splices in reinforced concrete structures: buildings, bridges, precast elements, and infrastructure where continuity of reinforcement is required.
- Controls crack widths and structural continuity by limiting slip and ensuring ductile failure modes.
- Applicable for designers, specifiers and fabricators selecting couplers for static, fatigue‑sensitive, or seismic applications.
Who Uses This Standard
- Coupler manufacturers and quality managers
- Structural and geotechnical engineers specifying reinforcement splicing
- Construction contractors and precast producers
- Testing laboratories and conformity assessment bodies
- Procurement and specification writers seeking compliance in reinforced concrete projects
Related Standards
- ISO 15835-2:2018 - Test methods for mechanical splices
- ISO 15835-3 - Specifies test quantities (see Annex and ISO website)
- ISO 15630-1 - Test methods for reinforcing bars
Keywords: ISO 15835-1:2018, reinforcement couplers, mechanical splices, reinforcing bars, slip requirement, ductility, high-cycle fatigue, seismic splices, concrete reinforcement.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 15835-1
Second edition
2018-10
Steels for the reinforcement of
concrete — Reinforcement couplers
for mechanical splices of bars —
Part 1:
Requirements
Aciers pour l'armature du béton — Coupleurs d'armature destinés
aux raboutages mécaniques de barres —
Partie 1: Exigences
Reference number
©
ISO 2018
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
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below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2018 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Requirements . 3
5.1 General . 3
5.2 Categories of mechanical splices . 3
5.3 Strength and ductility under static forces . 4
5.3.1 General. 4
5.3.2 Strength . 4
5.3.3 Ductility . 4
5.4 Slip under static forces . 5
5.4.1 Testing requirements . 5
5.4.2 Slip requirement . 5
5.5 Properties under high-cycle fatigue loading (optional) . 6
5.5.1 Testing programme. 6
5.5.2 Fatigue performance . 6
5.5.3 S-N diagram (optional) . 7
5.6 Properties under low-cycle reverse loading (optional) . 7
5.7 Marking and traceability . 7
5.8 Installation instructions . 7
Annex A (informative) Items to be specified . 8
Bibliography . 9
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
The committee responsible for this document is ISO/TC 17, Steel, Subcommittee SC 16, Steels for the
reinforcement and prestressing of concrete.
This second edition cancels and replaces the first edition (ISO 15835-1:2009), which has been
technically revised with changes made to Clauses 1, 2, 3, 4 and 5, 3.2, 3.5, 5.2, 5.3, 5.5 and 5.6, Table 1,
and Annexes C and D. Clause 6 and Annexes A and B have been revised and have been moved out into a
new document: ISO 15835-3.
A list of all the parts in the ISO 15835 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved
INTERNATIONAL STANDARD ISO 15835-1:2018(E)
Steels for the reinforcement of concrete — Reinforcement
couplers for mechanical splices of bars —
Part 1:
Requirements
1 Scope
This document specifies requirements for couplers for the mechanical splicing of steel reinforcing bars.
More onerous requirements can be specified by the customer.
This document is applicable to the continuous production of coupler components. It is intended to be
used with adequate control measures for the processing of reinforcing bars, i.e. the production of the
mechanical splice.
This document specifies requirements for couplers used for mechanical splices in reinforced concrete
structures under predominantly static loads. It specifies additional requirements for couplers used in
structures subject to high-cycle elastic fatigue loading and/or low-cycle elastic-plastic reverse loading.
NOTE ISO 15835-3 specifies the quantity of tests.
Compression-only couplers such as end-bearing sleeves are not covered by the ISO 15835 series.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 15630-1, Steel for the reinforcement and prestressing of concrete — Test methods — Part 1: Reinforcing
bars, wire rod and wire
ISO 15835-2:2018, Steels for the reinforcement of concrete — Reinforcement couplers for mechanical
splices of bars — Part 2: Test methods
ISO 16020, Steel for the reinforcement and prestressing of concrete — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 16020 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
coupler length
actual length of the coupler including all load-transferring parts, if more than one, and including lock
nuts, if any
3.2
length of mechanical splice
coupler length plus two times the nominal bar diameter at both ends of the coupler
Note 1 to entry: This is a theoretical definition aimed at including the length of bar that could have been affected
by the bar-end preparation process.
3.3
mechanical splice
complete assembly of a coupler, including any additional intervening material or other components
providing a splice of two reinforcing bars
3.4
coupler
coupling sleeve or threaded coupler for mechanical splicing of reinforcing bars for the purpose of
providing transfer of axial tension and/or compression from one bar to the other where
— coupling sleeve is a device fitting over the ends of two reinforcing bars,
— threaded coupler is a threaded device for joining reinforcing bars with matching threads
3.5
slip
relative displacement between the components of a mechanical splice while being loaded to a defined
load level
3.6
slip measurement device
ensemble constituted by the extensometer and any system used to fasten it to the mechanical splice
3.7
batch
number of couplers of the same type and diameter, manufactured from the same cast of incoming
material, as a discrete unit defined by the manufacturer
3.8
lot
number of couplers of the same type and diameter, of various batches, delivered at the same time to the
same purchaser
4 Symbols
Table 1 — Symbols
Symbol Unit Designation
A % Percentage total elongation at maximum tensile
...
Frequently Asked Questions
ISO 15835-1:2018 is a standard published by the International Organization for Standardization (ISO). Its full title is "Steels for the reinforcement of concrete - Reinforcement couplers for mechanical splices of bars - Part 1: Requirements". This standard covers: This document specifies requirements for couplers for the mechanical splicing of steel reinforcing bars. More onerous requirements can be specified by the customer. This document is applicable to the continuous production of coupler components. It is intended to be used with adequate control measures for the processing of reinforcing bars, i.e. the production of the mechanical splice. This document specifies requirements for couplers used for mechanical splices in reinforced concrete structures under predominantly static loads. It specifies additional requirements for couplers used in structures subject to high-cycle elastic fatigue loading and/or low-cycle elastic-plastic reverse loading. NOTE ISO 15835-3 specifies the quantity of tests. Compression-only couplers such as end-bearing sleeves are not covered by the ISO 15835 series.
This document specifies requirements for couplers for the mechanical splicing of steel reinforcing bars. More onerous requirements can be specified by the customer. This document is applicable to the continuous production of coupler components. It is intended to be used with adequate control measures for the processing of reinforcing bars, i.e. the production of the mechanical splice. This document specifies requirements for couplers used for mechanical splices in reinforced concrete structures under predominantly static loads. It specifies additional requirements for couplers used in structures subject to high-cycle elastic fatigue loading and/or low-cycle elastic-plastic reverse loading. NOTE ISO 15835-3 specifies the quantity of tests. Compression-only couplers such as end-bearing sleeves are not covered by the ISO 15835 series.
ISO 15835-1:2018 is classified under the following ICS (International Classification for Standards) categories: 77.140.15 - Steels for reinforcement of concrete. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 15835-1:2018 has the following relationships with other standards: It is inter standard links to ISO 15835-1:2009. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase ISO 15835-1:2018 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.
ISO 15835-1:2018 provides a comprehensive framework for the specifications of couplers used in the mechanical splicing of steel reinforcing bars. The scope of this standard is particularly relevant as it sets forth the requirements necessary to ensure the reliability and integrity of couplers in reinforced concrete structures, predominantly under static loads. It recognizes the multifaceted nature of construction, allowing for the possibility of more stringent customer-specific requirements, thus showcasing its adaptability to varying project needs. One of the significant strengths of ISO 15835-1:2018 is its focus on continuous production of coupler components, ensuring uniformity and quality control throughout the manufacturing process. This emphasis on production quality aligns well with industry demands for high-performance materials. Additionally, the document delineates the different performance requirements needed for couplers subjected to diverse loading conditions, including high-cycle elastic fatigue and low-cycle elastic-plastic reverse loading, which enhances its applicability in complex structural design scenarios. The detailed specifications for the mechanical splicing system not only facilitate compliance with safety standards but also serve as a guide for manufacturers to develop products that meet these essential requirements. Furthermore, by excluding compression-only couplers like end-bearing sleeves, ISO 15835-1:2018 hones in on the specific needs of mechanical splicing applications, promoting clarity and focus in its guidelines. Overall, the ISO 15835-1:2018 standard stands out as a vital resource for engineers and construction professionals by ensuring that coupler systems for mechanical splices maintain structural integrity, thus directly supporting the safety and durability of reinforced concrete structures. Its comprehensive nature and flexibility to incorporate varying customer specifications further underscore its relevance in modern construction practices.
Die Norm ISO 15835-1:2018 legt umfassende Anforderungen für Kupplungen zur mechanischen Verbindung von Stahlbewehrungsstäben fest. Der Anwendungsbereich dieser Norm ist klar definiert und fokussiert sich auf die kontinuierliche Produktion von Kupplungskomponenten, die essentielle Rolle in der Herstellung von mechanischen Verbindungen in Stahlbetontragwerken spielen. Ein wesentlicher Aspekt dieser Norm ist die Möglichkeit, dass Kunden strengere Anforderungen an die Kupplungen stellen können, was die Flexibilität und Anpassungsfähigkeit der Norm unterstreicht. Eine der herausragenden Stärken von ISO 15835-1:2018 ist die klare Differenzierung zwischen dem Einsatz von Kupplungen unter unterschiedlichen Belastungsbedingungen. Die Norm behandelt spezifische Anforderungen für Strukturen, die hohen zyklischen elastischen Ermüdungslasten und/oder niederen zyklischen elastisch-plastischen Umkehrlasten ausgesetzt sind. Diese Details sind entscheidend für Ingenieure und Architekten, die mit den Herausforderungen der modernen Bauindustrie konfrontiert sind. Die Norm ist von großer Relevanz für die Gewährleistung der strukturellen Integrität von Betonbauwerken. Durch die Spezifizierung der Anforderungen für Kupplungen wird sichergestellt, dass diese Bauelemente sowohl unter statischen als auch unter dynamischen Lasten entscheidungsrelevante Leistungen erbringen. Das dokumentierte Testverfahren, auf das in ISO 15835-3 verwiesen wird, bietet zusätzliche Sicherheit in der Evaluierung der Leistungsfähigkeit dieser Kupplungen. Insgesamt ist ISO 15835-1:2018 ein unverzichtbares Dokument für Fachleute im Bauwesen, das eine solide Grundlage für die Planung und Ausführung von Stahlbetonstrukturen bietet, und damit zur Erhöhung der Sicherheit und Langlebigkeit von Bauwerken beiträgt.
La norme ISO 15835-1:2018 établit des exigences clés pour les raccords utilisés dans les épissures mécaniques de barres d'acier de renforcement. Son champ d’application est bien défini, se concentrant sur la production continue de composants de raccords et sur leur utilisation dans le cadre des structures en béton armé soumises principalement à des charges statiques. Parmi les points forts de cette norme, son approche rigoureuse et précise permet d'assurer la qualité et la sécurité des jointures mécaniques entre les barres. La possibilité pour le client de spécifier des exigences plus strictes renforce sa flexibilité et son adaptabilité aux besoins spécifiques de chaque projet. De plus, la norme couvre des conditions d'utilisation critiques, telles que celles impliquant des chargements de fatigue élastique à haut cycle ou des chargements élastico-plastiques à bas cycle, ce qui en fait un document d'une grande pertinence pour les ingénieurs et les concepteurs de structures. La norme ISO 15835-1:2018 se positionne donc comme un standard essentiel pour garantir la fiabilité et la performance des assemblages dans les structures en béton armé, contribuant ainsi à l'intégrité et à la durabilité des ouvrages. Au travers de ses exigences, elle assure une base solide pour la mise en œuvre de raccords conformes aux normes de sécurité et de performance, tout en tenant compte des avancées technologiques et des pratiques de contrôle de qualité dans le secteur de la construction.
ISO 15835-1:2018は、コンクリートの補強用鋼材における機械的スプライス用の補強継手に関する要求事項を定めている重要な標準です。この文書は、鋼製補強バーの機械的スプライスのための継手についての基準を設けており、特に静的荷重に耐える補強コンクリート構造物に使用されることを意図しています。 この標準の強みは、補強継手の設計に関して明確かつ具体的な要件を提供している点です。顧客のニーズに応じて、より厳しい要件を設定することができ、その柔軟性が多様な使用ケースに対応可能です。また、構造物が高サイクルの弾性疲労荷重や低サイクルの弾塑性逆荷重にさらされる場合に追加の要件を提示していることも、設計者にとって大きな利点となります。 ISO 15835-1:2018の適用範囲は、継手コンポーネントの継続的な生産に対応しており、補強バーの加工に対して適切な管理措置を講じることが求められています。この標準を遵守することで、機械的スプライスの品質を確保し、構造物の安全性と信頼性が向上します。 さらに、ISO 15835-1:2018は、圧縮専用の継手（例えば、端部支持スリーブ）は含まれていないことに注意が必要です。これにより、設計者は標準の適用範囲を正しく理解し、誤った適用を避けることができます。 総じて、ISO 15835-1:2018は、コンクリート構造物における補強材の機械的スプライスにおいて極めて関連性の高い標準です。その明確な要件と適応性により、建設業界において重要な役割を果たすことが期待されます。
ISO 15835-1:2018 표준은 콘크리트 보강용 강재의 기계적 스플라이스를 위한 보강 커플러에 대한 요구 사항을 명확히 규정하고 있습니다. 이 문서는 강화 바의 기계적 스플라이스를 위한 커플러의 지속적인 생산과 관련된 어떠한 방식으로도 사용될 수 있으며, 고객이 요구할 경우 더 엄격한 요구 사항을 추가로 명시할 수 있습니다. 이는 보강 바의 가공 과정에서 적절한 관리 조치와 함께 사용하도록 설계되었습니다. ISO 15835-1:2018의 강점은 주로 정적인 하중을 받는 보강 콘크리트 구조물에서 사용할 커플러에 대한 요구 사항을 명확히 정의함으로써, 구조물의 안전성과 효율성을 보장하는 것입니다. 또한, 이 문서는 고주기 탄성 피로 하중이나 저주기 탄성-플라스틱 역하중을 받는 구조물에서 사용될 커플러에 대한 추가 요구 사항도 명시하여, 다양한 환경에서도 안정성과 내구성을 제공할 수 있도록 돕습니다. 이 표준의 적용 범위는 철강재 보강구조물의 기계적 스플라이스에 특화되어 있으며, 이는 현대 건설 산업에서 필수적인 요소입니다. 따라서 ISO 15835-1:2018은 구조적 무결성을 보장하고, 시공 과정에서의 정확성과 신뢰성을 제공하는 중요한 기준으로 자리 잡고 있습니다. 이 표준은 보강 바의 기계적 스플라이스에 필요한 모든 요구 사항을 체계적으로 제시하여 건설 관련 엔지니어 및 업계 전문가들에게 매우 유용한 자료가 됩니다.
記事のタイトル：ISO 15835-1:2018 - コンクリートの補強用鋼材：配筋用機械継手 - 第1部：要求事項 記事の内容：この文書は、鋼製補強棒の機械的な連結に使用される継手の要件を規定しています。より厳しい要件は顧客によって指定されることがあります。この文書は、継手部品の連続的な生産に適用されます。また、鋼製補強棒の加工に対して適切な制御措置をとるために使用されることを意図しています。この文書は、主に静的負荷がかかる鉄筋コンクリート構造物で使用される機械的な継手に対する要件を規定しています。また、高周波弾性疲労荷重および/または低周波弾性-塑性逆荷重がかかる構造物で使用される継手について追加の要件を規定しています。なお、ISO 15835-3では、試験の数量を規定しています。エンドベアリングスリーブなどの圧縮式の継手は、ISO 15835シリーズでカバーされていません。
기사 제목: ISO 15835-1:2018 - 콘크리트 강화재료를 위한 철근 결합기 - 철근의 기계적 연결을 위한 인접부의 일부요건 기사 내용: 이 문서는 철근의 기계적 연결을 위한 결합기의 요건을 명시합니다. 요구사항은 고객이 추가로 명시할 수 있습니다. 이 문서는 결합기 구성 요소의 연속적인 생산에 적용됩니다. 이는 철근 가공, 즉 기계적 결합의 생산을 위한 적절한 통제 조치와 함께 사용하기 위한 것입니다. 이 문서는 정적 하중이 주로 걸리는 보강 콘크리트 구조물에서 기계적 연결을 위해 사용되는 결합기의 요건을 명시합니다. 또한, 고주기 탄성 피로 하중 및/또는 저주기 탄성-플라스틱 역 하중이 작용하는 구조물에서 사용되는 결합기에 대한 추가 요건을 명시합니다. 참고로, ISO 15835-3에서는 시험의 양을 명시합니다. 압축 전용의 결합기(예: 말단 베어링 슬리브)는 ISO 15835 시리즈에 포함되지 않습니다.
ISO 15835-1:2018 is a standard that specifies requirements for couplers used in the mechanical splicing of steel reinforcing bars in reinforced concrete structures. The standard applies to the continuous production of coupler components and is intended to be used with adequate control measures for the processing of reinforcing bars. It includes requirements for couplers used under static loads, as well as additional requirements for structures subject to high-cycle elastic fatigue loading and/or low-cycle elastic-plastic reverse loading. It should be noted that compression-only couplers like end-bearing sleeves are not covered by this standard.
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