Research on Fracture Toughness of C120 Ultra-High-Performance Concrete in Kingkey Financial Center Project
Table 4
Concrete fracture parameter test results.
Type
No.
E (GPa)
(N)
(N)
(MPa)
(MPa)
(MPa)
(MPa)
(J/m2)
(cm)
Basic
1
51.9
5000
14000
127.0
6.82
6.86
9.07
213.8
23.5
2
4600
14500
121.0
6.27
—
9.39
—
—
3
4700
13800
124.0
6.41
—
9.59
—
—
Avg.
4767
14100
124.0
6.50
6.86
9.35
213.8
23.5
1 kg long fiber
1
52.2
4800
13800
129.0
6.55
6.67
8.94
291.8
33.8
2
5000
15500
126.0
6.82
7.08
10.04
302.9
27.9
3
5000
15300
119.2
6.82
—
9.91
—
—
Avg.
4933
14867
124.7
6.73
6.88
9.63
297.35
30.9
2 kg long fiber
1
52.2
4800
12000
140.8
6.55
6.56
7.78
322.8
39.2
2
5000
15000
123.6
6.82
—
9.73
—
—
3
5200
14000
141.4
7.09
7.22
9.08
322.1
33.4
Avg.
5000
13667
135.3
6.82
6.89
8.86
322.5
36.3
2 Kg short fiber
1
52.0
5100
14000
120.0
6.95
6.97
9.07
300.3
30.0
2
5000
14000
115.0
6.82
6.84
9.07
321.8
30.7
3
5200
14000
—
7.09
—
9.07
—
—
Avg.
5100
14000
118.0
6.95
6.91
9.07
311.1
30.4
( = cracking load, = maximum load, E = modulus of elasticity, = compression strength, = cracking strength, = tensile strength, = flexural strength, = fracture energy, = brittleness; the smaller the is, the more brittle the concrete is)
