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BS 8500-2:2015+A1:2016 Concrete - Complementary to BS EN 206 - PDF Download for Constituent Materials and Concrete Specification


BS 8500-2: A Comprehensive Guide to Concrete Specification




Concrete is one of the most widely used construction materials in the world, and its quality and performance depend largely on how it is specified, produced and tested. That is why it is essential to follow the relevant standards and guidelines when designing, ordering and using concrete for various applications.


One of the most important standards for concrete specification in the UK is BS 8500-2, which is a complementary British Standard to BS EN 206, the European standard for concrete. In this article, we will provide you with a comprehensive guide to BS 8500-2, including its overview, main changes, practical use, pdf download and concrete mix design. By the end of this article, you will have a better understanding of how to specify concrete according to BS 8500-2 and achieve the desired results.




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What is BS 8500-2 and why is it important?




BS 8500-2 is a British Standard that specifies the constituent materials and concrete for different types of concrete applications. It complements BS EN 206 by providing UK national provisions where required or permitted by BS EN 206. It also covers materials, methods of testing and procedures that are outside the scope of BS EN 206, but within national experience.


BS 8500-2 is important because it helps specifiers, producers and users of concrete to ensure that the concrete they use meets the requirements of the intended exposure classes, working life and cover to reinforcement. It also helps to improve the durability, sustainability and performance of concrete structures by providing guidance on the selection of appropriate materials, properties and quality control measures.


BS 8500-2: An overview




BS 8500-2 consists of six sections and four annexes, as follows:



  • Section 1: Scope



  • Section 2: Normative references



  • Section 3: Terms, definitions, symbols and abbreviations



  • Section 4: Complementary requirements for constituent materials



  • Section 5: Complementary basic requirements for concrete



  • Section 6: Specification for constituent materials and concrete



  • Annex A (normative): Guidance on the selection of designated concretes



  • Annex B (normative): Guidance on conformity criteria



  • Annex C (informative): Guidance on durability modelling or an equivalent durability procedure



  • Annex D (informative): Guidance on alkali-silica reaction (ASR)



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  • Designated concrete: Concrete that is specified by a standardised prescribed method based on strength class, consistence class and exposure class.



  • Designed concrete: Concrete that is specified by a performance-based method based on strength class, consistence class and other properties as required.



  • Prescribed concrete: Concrete that is specified by a non-standardised prescribed method based on the proportions or quantities of constituent materials.



BS 8500-2: The main changes in the latest edition




The latest edition of BS 8500-2 was published in 2019 and it supersedes the previous edition from 2015. Some of the main changes in the latest edition are: - The introduction of a new exposure class XC5 for concrete exposed to wetting and drying in chlorides other than seawater. - The revision of the minimum cement content and maximum water/cement ratio for exposure classes XF1, XF2, XF3 and XF4 to take into account the effects of freeze-thaw cycles with or without de-icing agents. - The revision of the chloride class limits for reinforced and prestressed concrete to align with BS EN 206. - The introduction of a new clause on the use of recycled aggregates from different sources and the requirements for their quality and testing. - The introduction of a new clause on the use of ternary cementitious combinations containing fly ash, ground granulated blast-furnace slag or silica fume and the requirements for their proportions and properties. - The introduction of a new clause on the use of admixtures containing polymers and the requirements for their compatibility and performance. - The revision of the guidance on durability modelling or an equivalent durability procedure to include more examples and references. - The revision of the guidance on alkali-silica reaction (ASR) to include more information on the assessment and prevention methods. BS 8500-2: How to use it in practice




To use BS 8500-2 in practice, specifiers, producers and users of concrete need to follow these steps:



  • Determine the intended application, exposure conditions, working life and structural requirements of the concrete.



  • Select the type of concrete (designated, designed or prescribed) and the method of specification (standardised or non-standardised).



  • Specify the required properties of the concrete, such as strength class, consistence class, chloride class, maximum aggregate size, etc.



  • Select the appropriate constituent materials for the concrete, such as cement, aggregates, water, admixtures, etc., and ensure their compliance with BS 8500-2.



  • Produce and test the concrete according to BS 8500-2 and BS EN 206, and ensure its conformity with the specified requirements.



  • Use and maintain the concrete according to BS 8500-2 and BS EN 206, and ensure its durability and performance.



BS 8500-2 provides detailed guidance on each of these steps, as well as tables, charts and examples to help specifiers, producers and users of concrete to make informed decisions.


How to download BS 8500-2 pdf for free?




BS 8500-2 is a valuable document that can help you to specify concrete according to the UK national provisions and best practices. However, it is not a free document and you need to purchase it from the official website of BSI (British Standards Institution), which is the national standards body of the UK. The current price of BS 8500-2 pdf is 254.00.


If you want to download BS 8500-2 pdf for free, you might be tempted to look for alternative sources on the internet, such as file-sharing platforms, torrent sites or online libraries. However, we strongly advise you against doing so, for several reasons:


The benefits of downloading BS 8500-2 pdf




The only benefit of downloading BS 8500-2 pdf for free is that you can save some money. However, this benefit is outweighed by the drawbacks that we will discuss in the next section.


The drawbacks of downloading BS 8500-2 pdf




There are many drawbacks of downloading BS 8500-2 pdf for free from unofficial sources, such as:



  • You might be violating the intellectual property rights of BSI and exposing yourself to legal risks.



  • You might be downloading a fake, outdated or incomplete version of BS 8500-2 that could compromise the quality and safety of your concrete projects.



  • You might be exposing your computer or device to viruses, malware or spyware that could harm your data and privacy.



  • You might be supporting unethical practices that undermine the credibility and sustainability of standardisation activities.



Therefore, we recommend you to purchase BS 8500-2 pdf from BSI or other authorised distributors. This way, you can ensure that you are getting a genuine, up-to-date and complete version of BS 8500-2 that can help you to specify concrete according to the UK national provisions and best practices. You can also access other useful resources from BSI, such as online courses, webinars, books and articles that can enhance your knowledge and skills on concrete specification.</p The best sources to download BS 8500-2 pdf




The best sources to download BS 8500-2 pdf are the official website of BSI or other authorised distributors, such as:



  • : The online store of BSI where you can purchase BS 8500-2 pdf and other British Standards in various formats and languages.



: The subscription service of BSI where you can access BS 8500-2


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