Corrosion Zones of Rebar in High-Volume Fly-Ash Concrete through Potentiodynamic Study in Concrete Powder Solution Extracts: A Sustainable Construction Approach

Table 8

ANOVA result for rest potential of carbonated concrete.

Source	Degree of freedom (df)	Sum of squares (SS)	Mean squares (MS)	F-ratio	Probability > F-ratio
Carbonation (A)	1	10.7 × 10^6	10.7 × 10^6	128.24	0
Water-to-binder ratios (B)	2	4091.6	2045.8	32.24	0.0578
FA content (C)	5	1.76 × 10^5	35240.3	4.21	0.001
Steel types (D)	2	2.91 × 10^6	145876.6	17.44	0
(A)(B)	2	1.28 × 10^4	6446.9	5.77	0.4638
(A)(C)	5	1.24 × 10^5	24820.3	2.97	0.0126
(A)(D)	2	1560.2	780.1	0.09	0.911
(B)(C)	10	1.42 × 10^5	14208.1	1.7	0.0809
(B)(D)	4	1.13 × 10^5	28252.9	3.38	0.0056
(C)(D)	10	2.41 × 10^5	24101.9	2.88	0.0019
Error	276	2.30 × 10^6	8366.7
Total	319	4.5 × 10^6