Different specimens were cast in plastic molds directly after mixing and stored at >90%RH and 20±0.3°C until the age of testing. Compressive strength was tested at different ages on triplicate cube specimens (150×150×150 mm 3 ) according to EN 12390-3. Young modulus was tested on triplicate prismatic specimens (120×120×360 mm 3 ) according to EN 12390-13.