The modulus of elasticity is one of the most important properties of concrete, especially during structural analyses of buildings. It is, among others, an important parameter in the calculation of the concrete-element deflection or during the design of pre-or post-tensioned structures. The modulus of elasticity is not a specific number. It is a property with a high variability of the final values, which depend on the concrete composition (together with other factors). Some of the significant factors, which influence the final value of the elastic modulus of concrete, are also the means and quality of its curing, especially at the early stage of its setting and hardening. Apart from maintaining the temperature within the correct limits, it is important to focus on the moisture content of concrete while it is being cured. The purpose of the experiment described herein was to determine the development of the dynamic as well as static modulus of elasticity for structural concrete while using different curing methods. The experiment used four series of beam specimens with nominal dimensions of 100 × 100 × 400 mm made from air-entrained and non-air-entrained concretes of the C 30/37 strength class. A half of the specimens in each series aged in laboratory conditions and the other half was stored under water. Based on the evaluation of the experimental measurements, it can be said that the manner of storage has a significant influence on the development and final values of the static and dynamic modulus of elasticity. Keywords: concrete, curing, modulus of elasticity, compressive strength Ena od najpomembnej{ih lastnosti betona je modul elasti~nosti. Njegovo poznavanje je {e posebej pomembno za strukturno analizo stavb. To je, med drugim, pomemben parameter pri izra~unu deformacij betonskih elementov pred ali med oblikovanjem prednapetih struktur. Modul elasti~nosti ni specifi~na {tevilka; je lastnost z zelo razli~nimi kon~nimi vrednostmi, ki so odvisne od sestave betona (skupaj z drugimi dejavniki). Pogoji njegovega utrjevanja so zelo pomembni. Vplivajo na kon~no velikost elasti~nega modula betona, zlasti v zgodnji (za~etni) fazi utrjevanja. Razen ohranjanja temperature v pravilnih mejah, se je pomembno osredoto~iti na vsebnost vlage v betonu, medtem, ko se le-ta utrjuje. Namen opisanega preizkusa je bil dolo~iti tako razvoj dinami~nega kot tudi stati~nega modula elasti~nosti konstrukcijskega betona, z uporabo razli~nih metod utrjevanja. V preizkusu so bile uporabljene {tiri serije preizku{ancev v obliki nosilcev z nazivnimi dimenzijami 100 mm × 100 mm × 400 mm, izdelanih iz zra~no tretiranih in netretiranih betonov iz trdnostnega razreda C 30/37 (N/mm 2 ). Polovica vzorcev v vsaki seriji je bila starana v laboratorijskih pogojih, druga polovica pa je bila shranjena v vodi. Na podlagi vrednotenja eksperimentalnih meritev, lahko re~emo, da na~in shranjevanja pomembno vpliva na razvoj in kon~ne vrednosti stati~nega in dinami~nega modula elasti~nosti.