International Journal of Polymer Science / 2015 / Article / Tab 2

Research Article

Behavior and Performance of GFRP Reinforced Concrete Columns with Various Types of Stirrups

Table 2

Experimental test results.

Group sample Number (%) Stirrup@ Maximum compressiveAvg. ratio @ Maximum compressive
Strength (kN)Stress (MPa)% of differenceColumn axial strain (mm/mm)

C-1
SF-sc
1
2
3
1.42Spiral (s)380
340
390
16.9
15.1
17.3
1.643 0.2180.005
0.004
0.007
C-2
SN-sc
1
2
3
Spiral (s)
330
310

14.7
13.8
1.425
0.005
0.005

C-3
SF-sn
1
2
3
2.05Spiral (s)360
370
23.0
23.7
2.085 0.4540.004
0.004
C-4
SN-sn
1
2
3
Spiral (s)240
285
285
15.4
18.2
18.2
1.6310.005
0.006
0.006

C-5
CF-sc
1
2
3
1.91Spiral (s)320

370
18.1

21.5
1.892 0.4290.006

0.007
C-6
CN-sc
1
2
3
Spiral (s)280
270
250
15.8
15.3
14.1
1.4400.003
0.006
0.007

C-7
CF-sn
1
2
3
2.63Spiral (s)310

320
25.3

26.1
2.427 0.4630.004

0.004
C-8
CN-sn
1
2
3
Spiral (s)
250
260

20.4
21.2
1.964
0.003
0.005

C-9
SF-tc
1
2
3
1.42Tied (t)355
375
16.0
16.7
1.635 0.2280.003
0.004
C-10
SN-tc
1
2
3
Tied (t)320
320
310
14.2
14.2
13.8
1.4070.006
0.004
0.005

C-11
SF-tn
1
2
3
2.05Tied (t)
375
360

24.0
23.0
2.098 0.552
0.007
0.006
C-12
SN-tn
1
2
3
Tied (t)277
250
270
17.7
16.0
17.2
1.5150.003
0.006
0.007