Impact of Cyclic Loading on Chloride Diffusivity and Mechanical Performance of RC Beams under Seawater Corrosion

Table 5

(a) Tests of between-subjects effects

Dependent variable	Source	Type III sum of squares	Df	Mean square		Sig.
Reduction of yield load	Corrected model		5	210.746	30.072	0.000
	Intercept	7203.000	1	7203.000	1027.817	0.000
	Cycles	297.247	3	99.082	14.138	0.004
	Max load	756.485	2	378.242	53.973	0.000
	Error	42.048	6	7.008
	Total	8298.780	12
	Corrected total	1095.780	11
Reduction of ultimate load	Corrected model		5	119.551	22.438	0.001
	Intercept	6528.667	1	6528.667	1225.338	0.000
	Cycles	235.289	3	78.430	14.720	0.004
	Max load	362.465	2	181.233	34.015	0.001
	Error	31.968	6	5.328
	Total	7158.390	12
	Corrected total	629.723	11

Note. squared = 0.962 (adjusted squared = 0.930). squared = 0.949 (adjusted squared = 0.907).

(b) Post hoc test (dependent variable: reduction of yield load)

Cycles		Subset		Max load		Subset
		1	2			1	2	3
1	3	21.1667		0.4	4	15.3000
10	3	21.6000		0.5	4		23.5250
5	3	22.1333		0.6	4			34.6750
20	3		33.1000
Sig.		0.680	1.000	Sig.		1.000	1.000	1.000

Note. The error term is mean square (error) = 7.008. Alpha = 0.05.

(c) Post hoc test (dependent variable: reduction of ultimate load)

Cycles		Subset		Max load		Subset
		1	2			1	2
1	3	16.0000		0.4	4	15.6500
10	3		24.1000	0.5	4		26.1000
5	3		25.4333	0.6	4		28.2250
20	3		27.7667
Sig.		1.000	0.109	Sig.		1.000	0.241

Note. The error term is mean square (error) = 5.328. Alpha = 0.05.