Stiffness and Crack Behavior of Unbonded Posttensioned Concrete Beam Strengthened with Aluminum Alloy Plate

Table 6

Calculation results and experimental data of mean crack spacing.

No.	ρs	ρa	Experimental data of lcr (mm)	Calculation results of lcr (mm)	Error (%)
SL1	0.006	0.015	154	157	1.9
SL2	0.013	0.015	133	128	−3.9
SL3	0.025	0.015	111	111	0
SS1	0.008	0.02	142	137	−3.7
SS2	0.017	0.02	114	114	0
SS3	0.025	0.02	105	106	0.9