The concept of the 22nd concrete days (CD 2015) allowed a rich programme of expert lectures and posters but also enough time for professional discussions, informal business negotiations and friendly meetings. The czech concrete society CSSI as the organizing body of the conference has done its best to ensure a convenient stay for 22 times. There were more than 310 participants at the conference this time. The selected papers include recent results of scientific and engineering decisions in area of researching of properties and manufacturing technologies of modern concretes; modelling and design of structure elements from concrete and realization of significant construction projects.
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