@conference {2738,
	title = {NDT testing of stiffness evolution of UHPFRC since casting},
	journal = {2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures (EAC2)},
	year = {2017},
	month = {2017-09-12 00:00:00},
	pages = {767-772},
	address = {Bruxelas, B{\'e}lgica},
	abstract = {
The current work presents the continuous monitoring of the early stiffness evolution of an UHPFRC (Ultra-high performance fibre reinforced cement composites) mixture using a combined set of non-destrutive testing techniques; "Elasticity Modulus Measurement through Ambient Response Method" (EMM-ARM), Ultra Sound Pulse (UPV) velocity measurement, and resistivity measurement. Three mixture proportions are considered for all testing techniques, covering a reference mixture without added fibres and a couple of mixes with 1.5 \% and 3.0 \% of fibres, respectively. Conclusions are taken in regard to the particularities of stiffness evolution in UHPFRC in of the particularities of the material (namely the presence of fibers).\ 
},
	keywords = {E-modulus, early ages., EMM-ARM, Ultra-high performance fibre reinforced composites (UHPFRC)},
	author = {Matos, A. M. and Granja, J. and Nunes, S. and Aguiar, J. B. and Azenha, M.}
}