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New taskforce to target concrete placement issues

The European Federation of Foundation Contractors has announced plans for form a special task group to look into concreting issues on ground engineering projects.

The issue was identified by the EFFC’s technical working group chairman Bartho Admiraal at a meeting in October and a decision has been made to form a sub-group of concrete specialists and contractors who have experienced issues to focus on the problem.

According to the EFFC, the development in cement and additive technology is an on-going process of change and some have significant influences on the chemical reaction processes. “For “normal” concrete these influences are often limited and in some cases greatly beneficial,” said the EFFC in a statement. “However, for geotechnical works the requirements are often greater than for in-situ work and one of the consequences of advanced mix design is that the mixes become less robust and sensitive. This can have disastrous results for piling and diaphragm walls.

“Concrete test methods have not changed in many years and there is now a view that additional and/or modified test methods may be required.”

The new EFFC group will look to identify known problems in geotechnical structures related to concrete mix design, testing or placement and collect existing knowledge in material technology, published guidelines and standards. The first meeting is scheduled to take place in Amsterdam on 23 January 2014.

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