Table 6.

Statistical test results for compressive strength of CFGPC and OPCC.

Mechanical Characteristics	fc’ (MPa)		ft (MPa)		Ec (GPa)
Concrete Type	OPCC	CFGPC	OPCC	CFGPC	OPCC	CFGPC
Mean	36.91	37.35	3.29	3.54	28.06	18.97
Test date	28 day	7 day	28 day	7 day	28 day	7 day
F-test	F = 2.46 < f0.05 = 2.81		F = 2.37 < f0.05 = 2.81		F = 1.72 < f0.05 = 2.81
Equal variances?	Yes		Yes		Yes
T-test	ts = 0.30 < t0.05 = 2.07 P = 0.77 > 0.05		ts = 1.52 < t0.05 = 2.07 P = 0.14 > 0.05		ts = 11.23 > t0.05 = 2.07 P = 1.4 × 10−10 < 0.05
Statistically significant difference?	No		No		Yes