Comparative analysis of concretes designed for exposure classes XC2 and XC3 using the active mineral additive trass

<jats:p>The paper investigates the influence of the active mineral additive trass on the physico-mechanical properties of concrete. Mixtures with 18 % and 25 % replacement of cement with trass were studied for concretes designed for environmental exposure classes XC2 and XC3. An optimal dosage of a high-range water-reducing admixture was determined to achieve the same consistency class for all mixes. The development of compressive strength and elastic modulus was monitored up to 90 days. An assessment was also made of the differences in resistance to freeze-thaw cycles and drying shrinkage, depending on the trass content in the binder.</jats:p>