| Specimen |
Surface cond. |
Concrete strength |
Dia. of rebar (mm) |
No. of rebar |
Steel ratio (As/Ac) |
Measured shear force (kN) |
Stress (MPa) |
(1)/(2) |
|||||
| Upper layer |
Bottom layer |
A |
B |
C |
Ave. |
Test (1) |
Equation (2) |
||||||
| S1-D10 |
Smooth |
SC80 |
NC30 |
10 |
1 |
0.55 |
152.6 |
180.5 |
238.8 |
190.6 |
1.3 |
1.18 |
1.12 |
| S2-D10 |
2 |
1.09 |
94.4 |
410.1 |
221.3 |
315.7 |
2.2 |
1.31 |
1.67 |
||||
| S3-D10 |
3 |
1.64 |
250.3 |
300.7 |
222.8 |
257.9 |
1.8 |
1.44 |
1.24 |
||||
| S4-D10 |
4 |
2.18 |
281.4 |
370.8 |
206.3 |
286.2 |
2.0 |
1.57 |
1.26 |
||||
| S6-D10 |
6 |
3.27 |
340.5 |
410.1 |
395.0 |
381.9 |
2.7 |
1.84 |
1.44 |
||||
| S1-D16 |
16 |
1 |
1.40 |
499.4 |
176.4 |
233.3 |
303.0 |
2.1 |
1.39 |
1.52 |
|||
| S2-D16 |
2 |
2.79 |
337.7 |
370.0 |
400.4 |
369.4 |
2.6 |
1.72 |
1.49 |
||||
| S3-D16 |
3 |
4.19 |
195.8 |
279.8 |
199.5 |
225.0 |
1.6 |
2.06 |
0.76 |
||||
| S4-D16 |
4 |
5.59 |
357.6 |
418.3 |
283.5 |
353.1 |
2.5 |
2.39 |
1.03 |
||||
| S6-D16 |
6 |
8.38 |
422.7 |
402.2 |
438.5 |
421.1 |
2.9 |
3.06 |
0.96 |
||||
| R1-D10 |
Indented |
10 |
1 |
0.55 |
423.2 |
360.1 |
329.8 |
371.0 |
2.6 |
1.70 |
1.52 |
||
| R2-D10 |
2 |
1.09 |
400.0 |
468.5 |
531.7 |
466.7 |
3.2 |
1.89 |
1.71 |
||||
| R3-D10 |
3 |
1.64 |
418.8 |
569.1 |
436.2 |
474.5 |
3.3 |
2.09 |
1.58 |
||||
| R4-D10 |
4 |
2.18 |
424.4 |
527.2 |
398.3 |
450.0 |
3.1 |
2.29 |
1.37 |
||||
| R6-D10 |
6 |
3.27 |
478.1 |
458.6 |
516.6 |
484.4 |
3.4 |
2.68 |
1.26 |
||||
| R1-D16 |
16 |
1 |
1.40 |
481.6 |
500.6 |
548.8 |
510.3 |
3.5 |
2.00 |
1.77 |
|||
| R2-D16 |
2 |
2.79 |
406.4 |
405.8 |
527.1 |
446.4 |
3.1 |
2.51 |
1.24 |
||||
| R3-D16 |
3 |
4.19 |
436.4 |
450.1 |
493.7 |
460.1 |
3.2 |
3.01 |
1.06 |
||||
| R4-D16 |
4 |
5.59 |
438.4 |
548.6 |
555.5 |
514.2 |
3.6 |
3.51 |
1.02 |
||||
| R6-D16 |
6 |
8.38 |
621.6 |
549.3 |
610.4 |
593.8 |
4.1 |
4.52 |
0.91 |
||||
| NR1-D10 |
Indented |
NC30 |
10 |
1 |
0.55 |
288.4 |
359.6 |
284.3 |
310.8 |
2.2 |
1.70 |
1.27 |
|
| NR2-D10 |
2 |
1.09 |
366.0 |
289.4 |
301.9 |
319.1 |
2.2 |
1.89 |
1.17 |
||||
| NR3-D10 |
3 |
1.64 |
380.0 |
344.5 |
402.1 |
375.5 |
2.6 |
2.09 |
1.25 |
||||
| NR4-D10 |
4 |
2.18 |
471.5 |
442.9 |
403.9 |
439.4 |
3.1 |
2.29 |
1.34 |
||||
| NR6-D10 |
6 |
3.27 |
501.4 |
481.6 |
431.7 |
471.6 |
3.3 |
2.68 |
1.22 |
||||
| NR1-D16 |
16 |
1 |
1.40 |
369.0 |
373.0 |
358.1 |
366.7 |
2.5 |
2.00 |
1.27 |
|||
| NR2-D16 |
2 |
2.79 |
340.5 |
345.9 |
421.8 |
369.4 |
2.6 |
2.51 |
1.02 |
||||
| NR3-D16 |
3 |
4.19 |
430.9 |
325.0 |
383.3 |
379.7 |
2.6 |
3.01 |
0.88 |
||||
| NR4-D16 |
4 |
5.59 |
505.5 |
460.6 |
529.5 |
498.5 |
3.5 |
3.51 |
0.99 |
||||
| NR6-D16 |
6 |
8.38 |
529.6 |
530.5 |
- |
530.1 |
3.7 |
4.52 |
0.82 |
||||