Table 9.

The flexural tensile strength of FRC calculated using empirical formulas and resulting from the tests carried out.

Mixture	ffl acc. to Equation (5) [MPa]	ffl acc. to Equation (6) [MPa]	ffl acc. to Equation (7) [MPa]	${\mathbf{f}}_{\mathbf{ct},\mathbf{L}}^{\mathbf{f}}={\mathbf{f}}_{\mathbf{fl}} \mathbf{from} \mathbf{Studies} \left[\mathbf{MPa}\right]$
PM_3	7.43 (2.16)	3.92 (1.14)	4.50 (1.31)	3.44
PM_2	7.59 (2.22)	2.86 (0.83)	4.05 (1.18)	3.42
PD_3	7.45 (2.17)	2.86 (0.83)	4.05 (1.18)	3.44
PD_2	7.68 (2.12)	2.15 (0.59)	3.75 (1.03)	3.63
FF_2	7.70 (2.08)	2.78 (0.75)	4.02 (1.09)	3.69

Note: the ratio of the calculated f_fl from the given formula to that resulting from the performed studies is presented in the brackets.