Proceedings Vol. 17 (2011)
ENGINEERING MECHANICS 2011
May 9 – 12, 2011, Svratka, Czech Republic
Copyright © 2011 Institute of Thermomechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)
list of papers scientific commitee
pages 411 - 414, full text
This paper deals with the influence of moisture in determining the mechanical properties (dynamic modulus of elasticity) of porous building materials using nondestructive impulse excitation method. The gypsum specimens of dimensions 40×40×160 mm were dried and during their drying the basic natural frequencies of longitudinal vibration were measured in different time instants. Based on these frequencies, the dynamic moduli of elasticity were determined and their dependence on the moisture content of the gypsum specimens was evaluated.
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