Nonlinear Analysis for the Crack Control of SMA Smart Concrete Beam Based on a Bidirectional B-Spline QR Method

Table 6

The recovery situation of maximum crack width with different reinforcement ratios.

Temperature of SMA wires (°C)	Maximum crack width (mm)			Recovery rate of maximum crack width (%)
	20	0.3935	0.2098	0.1275	0.00	0.00	0.00
40	0.3918	0.2090	0.1270	0.43	0.39	0.38
60	0.3611	0.1940	0.1181	8.23	7.54	7.34
80	0.3448	0.1851	0.1129	12.37	11.77	11.44
100	0.3340	0.1795	0.1096	15.13	14.44	14.02
120	0.3307	0.1779	0.1087	15.97	15.22	14.78

Reinforcement ratios : = 0.46% (reinforcement diameter 14 mm), = 0.76% (reinforcement diameter 18 mm), and = 1.14% (reinforcement diameter 22 mm).