%0 Journal Article
%T THE INFLUENCE OF A SHRINKAGE REDUCING ADMIXTURE ON THE LONG-TERM DEVELOPMENT OF DYNAMIC PROPERTIES IN ALKALI-ACTIVATED SLAG
%A Barbara Kucharczykov¨˘
%A Dalibor Koc¨˘b
%A Jan Kotrla
%A Martin Alexa
%J -
%D 2019
%X The paper investigates the way a shrinkage-reducing admixture affects the long-term development of dynamic properties in mortars made with alkali-activated slag (AAS). Two AAS mortars were tested - one contained a shrinkage-reducing admixture, the other did not. The specimens (prisms of 40 ˇÁ 40 ˇÁ 160mm) were observed for changes in the dynamic modulus of elasticity at ages of 3 days through 2 years using the ultrasonic pulse velocity test and the resonance method. Even though the statistical analysis of the results gave no proof that the shrinkage-reducing admixture affected the final values, the development of the elastic modulus appeared to follow a very interesting trend which is completely different from trends commonly observed in cement-based composites
%K alkali-activated slag
%K dynamic modulus of elasticity
%K ultrasonic pulse velocity test
%K resonance method
%U https://ojs.cvut.cz/ojs/index.php/APP/article/view/5638