EN 989:1995
(Main)Determination of the bond behaviour between reinforcing bars and autoclaved aerated concrete by the the "Push-Out" test
General Information
- Abstract
This European standard specifies a method of determining the bond behaviour between reinforcing bars and autoclaved aerated concrete (AAC). The test may be used for quality control purposes. Values to be used in design cannot be derivedfrom the test results.
- Status
- Published
- Publication Date
- 30-May-1995
- Technical Committee
- CEN/TC 177 - Prefabricated reinforced components of autoclaved aerated concrete or light-weight aggregate concret
- Drafting Committee
- CEN/TC 177/WG 3 - Test methods
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 05-Sep-2022
- Completion Date
- 02-Sep-2026
- Directive
- Harmonized Standard305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
Not Harmonized89/106/EEC - Construction products
Overview
EN 989:1995 is a CEN European standard that specifies a laboratory method for determining the bond behaviour between reinforcing bars and autoclaved aerated concrete (AAC) using the Push-Out test. The standard describes how to assess the interaction (bond and slip) between reinforcement and AAC for quality control purposes. Importantly, EN 989:1995 states that test results are not intended to provide direct values for structural design.
Key Topics
- Scope and purpose
- Method to determine bond behaviour using the Push-Out test on AAC elements.
- Intended primarily for quality control and comparative assessment, not for deriving design values.
- Test principle
- The Push-Out test measures the relative movement (slip) and load transfer between a reinforcing bar and surrounding AAC under axial loading.
- Specimen preparation and testing
- Requirements for preparing test specimens, embedding reinforcement, and applying axial loads (as specified in the standard).
- Measurement and data
- Recording load–slip behavior to characterise bond performance and to detect bonding anomalies or manufacturing defects.
- Limitations
- Results reflect test conditions and specified specimen details; they are not declared as design parameters for structural calculations.
Applications
- Quality control for AAC manufacturers
- Monitoring consistency of bond between reinforcement and autoclaved aerated concrete in production batches.
- Testing laboratories
- Performing standardized Push-Out tests to verify product conformity and to support material certification.
- Product development and R&D
- Comparing alternative reinforcement treatments, surface conditions, or AAC mixes to improve bond performance.
- Assessment and inspection
- Evaluating observed bond issues in prefabricated AAC elements or during troubleshooting of production/process changes.
Note: While engineers and researchers can use EN 989:1995 test data to understand bond behaviour trends, the standard explicitly disallows using these results directly as design values for structural calculations.
Related Standards
- Complementary CEN/EN standards cover concrete testing methods, reinforcement specifications, and structural design rules. Users implementing EN 989:1995 should consult applicable EN standards on concrete product testing and reinforcement for full compliance with regulatory and design requirements.
Keywords: EN 989:1995, Push-Out test, autoclaved aerated concrete, AAC, bond behaviour, reinforcing bars, quality control, CEN standard.
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Referred By
EN 12602:2008+A1:2013 - Prefabricated reinforced components of autoclaved aerated concrete - Effective Date
- 28-Jan-2026
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Frequently Asked Questions
EN 989:1995 is a standard published by the European Committee for Standardization (CEN). Its full title is "Determination of the bond behaviour between reinforcing bars and autoclaved aerated concrete by the the "Push-Out" test". This standard covers: This European standard specifies a method of determining the bond behaviour between reinforcing bars and autoclaved aerated concrete (AAC). The test may be used for quality control purposes. Values to be used in design cannot be derivedfrom the test results.
This European standard specifies a method of determining the bond behaviour between reinforcing bars and autoclaved aerated concrete (AAC). The test may be used for quality control purposes. Values to be used in design cannot be derivedfrom the test results.
EN 989:1995 is classified under the following ICS (International Classification for Standards) categories: 91.100.30 - Concrete and concrete products. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 989:1995 has the following relationships with other standards: It is inter standard links to EN 12602:2016, EN 12602:2008, EN 12602:2008+A1:2013. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 989:1995 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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