Sixty concrete cylinders 100 mm (4 in.) diameter and 200 mm height (8 in.) in
size were cast according to [4]. Super-plasticizer was used to control the slump
(14 cm). Table 1 summarizes the concrete mixture compositions. Physical and
chemical properties of the used cement and fly ash are illustrated in Tables 2.
The coarse aggregate was river gravel, with 19 mm (0.7 in.) maximum particle size.