Alkali-activated binders for precast and ready-mixed concrete products: A route map to standardisation, certification and guidance
On 30 June 2016 BRE published Alkali-activated binders for precast and ready-mixed concrete products: A route map to standardisation, certification and guidance, an information paper written by Andrew Dunster and David Gall.
According to the paper, approximately 5% of human-generated CO2 emissions result from cement production. There is a need to develop alternative, low-carbon cements and binders that are suitable for use at scale in concrete production. Alkali-activated binders (AA binders) and concretes produce less CO2 in their manufacture than conventional Portland cement (PC).
To facilitate this change, the standardisation and certification of AA binders and concretes will be necessary, however, most of the world’s cement and concrete standards are underpinned by BS EN 197 and ASTM C150/C595/C1157, both of which are based around PC. Supporting guidance, experience in use and codes of practice are needed underpin the wider acceptance of AA binders as construction materials.
This information paper summarises the current position from a UK perspective and provides support for those developing, adopting and utilising AA binders. It is intended to inform purchasers and specifiers of concrete and concrete products and those with a wider interest in the procurement of sustainable construction products.
The contents of the report are:
- -Cement and concrete standards: the global context.
- -Alkali-activated binders.
- -British and European Standards for concrete.
- -Alkali-activated binders, standards and CE marking.
- -Demonstration of compliance/declaration of performance of alkali-activated binders.
- Potential routes to standardisation, certification and guidance for alkali-activated binder concrete products and binder systems.
- -Standards, specifications and third-party certification.
- -Alkali-activated binders: the need for supplementary guidance documents.
- Code and standard requirements for alkali-activated binders: a longer-term view.
- Further reading.
 Related articles on Designing Buildings Wiki
- Alkali-aggregate reaction (AAR).
- Applications, performance characteristics and environmental benefits of alkali-activated binder concretes.
- BRE articles on Designing Buildings Wiki.
- Building Research Establishment.
- Cement in Saudi Arabia.
- Concrete vs. steel.
- High alumina cement.
- Material Flow Analysis: A tool for sustainable aggregate sourcing.
- Research on novel cements to reduce CO2 emissions.
- Sustainable materials.
- The use of concrete structures to protect construction sites.
Featured articles and news
Urban Heritage, Development and Sustainability: international frameworks, national and local guidance.
What will the General Data Protection Regulations (GDPR) mean for you when they come into force in May?
Business Secretary chairs a new taskforce to monitor and advise on mitigating the impacts of Carillion’s liquidation.
Sir John Armitt is appointed the new chair of the National Infrastructure Commission.
High quality and high density homes - is it what we need or is it storing up trouble?
Government announces its intention to strengthen planning rules to protect music venues and neighbours.
National Audit Office reports that there is little evidence that PFI offers better value than other forms of contracting.
What is liquidation and how does it apply to contractors in the construction industry?
Scrutiny is placed on Carillion's controversial 2013 decision to extend subcontractor payment terms to 120 days.
RSHP unveil their involvement in a boundary crossing which will provide a new entry point into Hong Kong.
With PFI currently under the spotlight due to Carillion, this introductory article explains what they are.
Estimates suggest that up to 30,000 small firms could be at risk of non-payment as a result of Carillion's collapse.