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 compressive | Avg. ratio | @ Maximum compressive | | Strength (kN) | Stress (MPa) | | % of difference | Column axial strain (mm/mm) |
| C-1
SF-sc | 1
2
3 | 1.42 | Spiral (s) | 380
340
390 | 16.9
15.1
17.3 | 1.643 |
0.218 | 0.005
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 | 2.05 | Spiral (s) | 360
370
— | 23.0
23.7
— | 2.085 |
0.454 | 0.004
0.004
— | C-4
SN-sn | 1
2
3 | — | Spiral (s) | 240
285
285 | 15.4
18.2
18.2 | 1.631 | 0.005
0.006
0.006 |
| C-5
CF-sc | 1
2
3 | 1.91 | Spiral (s) | 320
—
370 | 18.1
—
21.5 | 1.892 |
0.429 | 0.006
—
0.007 | C-6
CN-sc | 1
2
3 | — | Spiral (s) | 280
270
250 | 15.8
15.3
14.1 | 1.440 | 0.003
0.006
0.007 |
| C-7
CF-sn | 1
2
3 | 2.63 | Spiral (s) | 310
—
320 | 25.3
—
26.1 | 2.427 |
0.463 | 0.004
—
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 | 1.42 | Tied (t) | 355
375
— | 16.0
16.7
— | 1.635 |
0.228 | 0.003
0.004
— | C-10
SN-tc | 1
2
3 | — | Tied (t) | 320
320
310 | 14.2
14.2
13.8 | 1.407 | 0.006
0.004
0.005 |
| C-11
SF-tn | 1
2
3 | 2.05 | Tied (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 | 1.515 | 0.003
0.006
0.007 |
|
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