Experimental Research on Durability of Fly Ash Pavement Concrete and Mix Proportion Optimization

Table 9

ANOVA for gas content.

Independent variable	Sum of squares	Degrees of freedom	F value	value	F value at defined level of significance	Evaluation of significance
Water-binder ratio	0.67	2	3.58	0.13	6.94	Less significant
Water reducer (%)		2		1.00	4.32	Least significant
Fly ash (%)	0.042	2	0.22	0.67	2.00	Least significant
Air-entraining admixtures (%)	2.67	2	14.32	0.02		Most significant
Residual	0.74	2
Total	4.12	8