TS EN 1504-9
Products and systems for the protection and repair of concrete structures - Definitions, requirements, quality control and evaluation of conformity - Part 9: General principles for the use of products and systems
This Part of EN 1504 sets out basic considerations for specification of protection and repair of reinforced and unreinforced concrete structures (including, for example, pavements, runways, floor slabs and pre-stressed structures) using products and systems specified in other Parts of the EN 1504 series or any other relevant European Standard or European Technical Approval. This European Standard covers atmospherically exposed, buried and submerged structures. This European Standard includes: a) the need for inspection, testing and assessment before and after repair; b) protection from causes of defects and their repair in concrete structures. Causes of such defects may include: 1) mechanical actions, e.g. impact, overloading, movement caused by settlement, blast, vibration and seismic actions; 2) chemical and biological actions from environments, e.g. sulphate attack, alkali aggregate reaction; 3) physical actions, e.g. freeze-thaw, thermal cracking, moisture movement, salt crystallisation and erosion; 4) fire damage; 5) reinforcement corrosion resulting from: i) physical loss of the protective concrete cover; ii) chemical loss of alkalinity in the protective concrete cover as a result of reaction with atmospheric carbon dioxide (carbonation); iii) chloride (or other chemical) contamination of the concrete; iv) stray electrical currents conducted or induced in the reinforcement from neighbouring electrical installations. c) repair of defects caused by inadequate design, specification or construction or use of unsuitable construction materials; d) providing the required structural capacity by: 1) replacement or addition of embedded or external reinforcement; 2) filling of cracks and voids within or between elements to ensure structural continuity; 3) replacement or addition of concrete or whole elements; e) waterproofing as an integral part of protection and repair; […].
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About This Item
TS EN 1504-9 defines the general principles for specifying how products and systems are selected and used for the protection and repair of concrete structures. Rather than prescribing one repair recipe, this part provides the technical framework for identifying the cause of deterioration, matching the intervention to the defect, and planning protection or repair in a way that supports the structure’s intended performance. Within the overall framework of definitions, requirements, quality control and conformity assessment, the emphasis here is on the use of products and systems.
How concrete repair decisions are organised
From a general technical perspective, concrete repair is not limited to removing visible damage. Effective intervention addresses the underlying mechanism and its structural consequences. Corrosion, carbonation, chloride contamination, freeze-thaw action, chemical attack, fire damage, impact, overloading and design or construction shortcomings can each call for a different strategy. The principles addressed by this standard support combining protection with repair, restoring structural capacity where necessary, and treating functions such as waterproofing as part of the repair system rather than as an isolated add-on.
What the scope points to
- Applies to reinforced and unreinforced concrete structures.
- Covers structures exposed to the atmosphere, buried structures and submerged structures.
- Includes examples such as pavements, runways, floor slabs and prestressed structures.
- Treats inspection, testing and assessment as part of the technical process before and after repair.
- Relies on products and systems defined in other parts of the EN 1504 series or in relevant European Standards / European Technical Approvals.
In practical terms, the standard helps align diagnosis, product choice and repair objective. The selection is driven by the type of deterioration, the exposure conditions and the structural function that must be recovered or protected.
- Publication Date: 19.01.2010
- Standard Status: U (Yürürlükteki Standard/Standard)
- Publisher: TSE
- Document Language: en
- ICS Classification: 01.040.91 Yapı Malzemeleri ve Yapılar (Terimler); 91.080.40 Beton Yapılar
- Pages: 31
- Source Standard: EN 1504-9:2008
- International Equivalents: EN 1504-9-EQV
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