Testing Concrete E‐modulus at Very Early Ages Through Several Techniques: An Inter‐laboratory Comparison

These researches were performed thanks to the 'Hubert Curien' Partnerships passed, on one hand, between IFSTTAR & ULB (Tournesol project) and, on the other hand, between IFSTTAR & the University of Minho (Pessoa project - Proc 441, together with the Portuguese Foundation for Science and Technology - FCT). A special thank is addressed to the Campus France agency (http://www.campusfrance.org) for their management of these partnerships. The authors are also grateful to the financial support provided by FCT (Portuguese Foundation for Science and Technology) through PhD grant (SFRH/BD/80682/2011) to the third author and the research project EXPL/ECM-EST/1323/2013. The second, fourth and last four authors would like to thank the Belgian national founds for scientific research (FNRS) for their financial support to the Universite Libre de Bruxelles.

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