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Concrete Eurocode fails to tackle control of early age thermal cracking

Concrete Eurocode EN1992 fails to properly tackle early-age thermal crack control and could lead to 'insufficiently robust design solutions', industry research body CIRIA warned this week.
Fears that the new Eurocodes could see designers specifying half the steel required to properly control cracks, prompted CIRIA to this week publish a new design guide to accompany the code.'The approach (to early-age thermal cracking) is fragmented,' explained consultant Phil Bamforth who drafted the guide for CIRIA. 'The effect of these changes is to reduce significantly the reinforcement requirements for crack control,' he added. 'Observations of early-age cracking indicate that these reductions may lead to insufficiently robust designs.'The new CIRIA guide, C660: Early-age thermal crack control in concrete is complementary to EN1992, the new structural design Eurocodes for concrete which is due to completely replace the current British Standards for concrete design by 2010.

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