Table 14.

ANOVA for 365-day splitting tensile strength.

Variance Source	Sum of Squares	Df	Mean Square	F Value	Significance	Contribution of Factor (%)
$w/b$	1.515	2	0.758	2.589	0.113	15.72
GGBS content Δ	0.582	5	0.116
Fiber content	0.591	2	0.295	1.010	0.391	0.08
Error	3.222	8	0.403
Error Δ	3.804	13	0.293
Total	5.910	17

Note: The effects of GGBS content are within the error.