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International Journal of Concrete Structures and Materials

Table 4 UPV data in the forced direction

From: Experimental Evaluation of Shape Memory Alloy Retrofitting Effect for Circular Concrete Column Using Ultrasonic Pulse Velocity

Specimen no.

Control—forced direction

CFRP—forced direction

Fe-SMA—forced direction

5 cm

15 cm

20 cm

5 cm

15 cm

20 cm

5 cm

15 cm

20 cm

Before loading

1

4120

4105

4127

4340

4226

4192

4312

4294

4189

2

4285

4188

4074

4371

4250

4180

4295

4046

4059

3

4230

4089

4102

4329

4206

4193

4340

4027

4076

Avg

4238

4104

4101

4347

4228

4188

4315

4122

4108

Cycle 1

1

4385

7107

4233

–

–

–

–

–

–

2

4347

4157

4247

–

–

–

–

–

–

3

4396

4095

4239

–

–

–

–

–

–

Avg

4376

4120

4245

–

–

–

–

–

–

Cycle 2

1

4365

4096

4190

4010

4068

3970

4289

3976

4041

2

4357

4054

4194

4348

4027

3973

4244

4010

4150

3

4344

4102

4149

4060

4010

3851

4275

3919

4132

Avg

4355

4084

4177

4139

4035

3931

4269

3968

4107

Cycle 3

1

4273

3977

4161

–

–

–

–

–

–

2

4290

3980

4125

–

–

–

–

–

–

3

4299

3950

4163

–

–

–

–

–

–

Avg

4287

3969

4149

–

–

–

–

–

–

Cycle 4

1

4239

3768

4064

3750

3811

3885

4112

3909

4124

2

4136

3820

4085

3788

3803

3872

4210

3847

4108

3

4132

3743

4049

4034

3822

3852

4186

3900

4108

Avg

4169

3777

4066

3854

3812

3869

4169

3885

4113

Cycle 6

1

800

–

–

2810

3273

3491

2922

3108

3627

2

800

–

–

2783

3231

3483

3010

3103

3639

3

–

–

–

2773

3206

3479

3075

3113

3670

Avg

800

–

–

2788

3236

3484

3002

3108

3645

Cycle 7

1

–

–

–

2757

2980

3217

2652

2776

3803

2

–

–

–

2790

2882

3194

3001

2759

3669

3

–

–

–

2804

2893

3202

2455

2757

3521

Avg

–

–

–

2783

2918

3204

2702

2764

3664

Cycle 8

1

–

–

–

2660

2892

3039

2410

2466

3392

2

–

–

–

2663

2774

3057

2524

2406

3465

3

–

–

–

2680

2879

3088

2574

2390

3485

Avg

–

–

–

2667

2848

3061

2502

2420

3447

Cycle 9

1

–

–

–

2578

2055

2940

2264

2193

2625

2

–

–

–

2601

1433

1433

2035

2283

3344

3

–

–

–

2596

1325

2923

2539

2237

3399

Avg

–

–

–

2591

1604

2432

2279

2237

3122

Cycle 10

1

–

–

–

2520

1320

1540

2015

2116

3491

2

–

–

–

2518

1267

1322

2107

2292

3267

3

–

–

–

2503

1290

1320

2008

2096

3295

Avg

–

–

–

2513

1292

1394

2043

2168

3351

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