Experimental Investigation on Shear Strength between Ultra-High-Performance Concrete and Normal Concrete Substrates
Table 5
Interfacial bond shear strength.
Group
Specimen no.
(kN)
τ (MPa)
M
K0-NA-40
K0-NA-40-1
55.1
2.4
A
2.1
K0-NA-40-2
48.9
2.1
A
K0-NA-40-3
34.7
1.5
A
K1-NA-40
K1-NA-40-1
112.2
4.9
B
5.0
K1-NA-40-2
124.0
5.4
B
K1-NA-40-3
108.7
4.7
B
K2-NA-40
K2-NA-40-1
209.4
9.1
B
9.7
K2-NA-40-2
242.0
10.5
B
K2-NA-40-3
219.9
9.5
C
K3-NA-40
K3-NA-40-1
327.6
14.2
D
13.9
K3-NA-40-2
309.3
13.4
C
K3-NA-40-3
326.0
14.1
C
K2-CP-40
K2-CP-40-1
229.5
9.9
C
9.0
K2-CP-40-2
207.1
9.0
C
K2-CP-40-3
162.8
7.1
B
K2-SC-40
K2-SC-40-1
206.9
9.0
C
9.0
K2-SC-40-2
211.8
9.2
C
K2-SC-40-3
206.9
9.0
B
K2-EC-40
K2-EC-40-1
197.9
8.6
B
9.0
K2-EC-40-2
207.9
9.0
C
K2-EC-40-3
215.4
9.3
B
K2-NA-30
K2-NA-30-1
251.5
10.9
C
10.0
K2-NA-30-2
158.4
6.9
C
K2-NA-30-3
229.9
10.0
C
K2-NA-35
K2-NA-35-1
262.3
11.4
C
11.4
K2-NA-35-2
279.2
12.1
B
K2-NA-35-3
245.3
10.6
B
K2-NA-50
K2-NA-50-1
222.7
9.6
B
11.0
K2-NA-50-2
282.6
12.2
B
K2-NA-50-3
253.8
11.0
B
Note. The test data refer to the standard for the test method of mechanical properties on ordinary concrete (GB/T 50081-2002). Among the three measured values, if the difference between the maximum value or minimum value and the median exceeds 15% of the median, the maximum value and the minimum value are discarded together, and the median is taken as the compressive strength value of the group of specimens. If the difference between the maximum and minimum values and the median exceeds 15% of the median, the test results of the group of specimens are invalid.
