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Member of EFCA - The ‘European Federation of Concrete
Admixture Associations’
www.efca.info
WELCOME
The CAA is a trade association representing over
85% of UK admixture manufacture and is committed to offering the
highest standards of product quality and support.
Admixtures are specially formulated products that are added in
small amounts to concrete, mortar or grout during the mixing process
in order to modify the concrete properties in the plastic and /
or hardened state.
These varied and versatile products provide enhanced concrete quality
and deliver cost-benefits to both the producer and the user.
Durability, sustainability and environmental profile can all be
enhanced by admixture use.
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New Briefs :
- Chris Fletcher, BASF took over as CAA Chairman at this years AGM. He will hold the position for the next two years and will represent the CAA at European meetings of EFCA. The Vice Chairman is Tom Forsyth of SIKA.
- Neil Dowie of Cemex took over as Chairman of the CAA Technical Committee from Roy Jones who had held the position for 8 years. Key issues for the CAA over the coming year include demonstrating the sustainability of admixtures as part of the Sustainable Concrete initiative from the UK Concrete Platform and the successful revisions of a number of admixture standards.
- CAA Reference Cement was marketed to help the admixture industry and its customers to test admixtures for compliance with European and UK Standards. Changes to availability of cement that meets the requirements of these standards has resulted in the CAA having to withdraw its reference cement.
- Environment. The CAA has produced two new Admixture Environmental Sheets (AES) covering their Sustainability Profile’ AES11 and Admixtures, EcoPoints and the Green Guide AES 12. These are both available for free download from the CAA Publications Page of this website. Sustainability information for concrete can be found on the UK Concrete Industry ‘Sustainability Web Site’ www.sustainableconcrete.org.uk.
- EN 934-1 ‘General requirements for admixtures’ was published this year. It replaces Table 1 in EN 934 parts 2 to 5 and includes requirements in relation to the effect (if any) of the admixture on embedded steel.
- EN 934 parts 2 to 5. Part 5 was published in 2007. Parts 2 to 4 are all due for revision and a number of key changes have been agreed but the standards are held up in the CEN system and have not yet appeared for vote.
- EFCA the European Admixture Federation is looking at introducing a test method that would allow Viscosity Modifying Admixtures for segregation resistance in SCC to be standardised within the EN 934 series.
- For other news see the CAA website ‘Profile – News’ page
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