Static Mechanical Properties and Microscopic Analysis of Hybrid Fiber Reinforced Ultra-High Performance Concrete with Coarse Aggregate
Table 4
Summary of experimental results of various factors.
Numbering
A
B
C
B × C
fcu,k (MPa)
fcf (MPa)
Ec (GPa)
mCA (%)
PPF (%)
SF (%)
A1
1 (10%)
1 (0)
1 (0%)
1
92.53
11.13
42.1
A2
1 (10%)
2 (0.05%)
2 (0.5%)
2
106.3
16.4
43.5
A3
1 (10%)
3 (0.1%)
3 (1.0%)
3
114.4
19.4
44.8
A4
1 (10%)
4 (0.15%)
4 (1.5%)
4
121.7
20.1
45.1
A5
2 (15%)
1 (0)
2 (0.5%)
3
115.6
14.5
48.5
A6
2 (15%)
2 (0.05%)
1 (0%)
4
101.9
13.2
47.1
A7
2 (15%)
3 (0.1%)
4 (1.5%)
1
136.4
19.8
48.9
A8
2 (15%)
4 (0.15%)
3 (1.0%)
2
125.7
17.6
49.7
A9
3 (20%)
1 (0)
3 (1.0%)
4
121.9
16.7
50.3
A10
3 (20%)
2 (0.05%)
4 (1.5%)
3
129
17.3
51.3
A11
3 (20%)
3 (0.1%)
1 (0%)
2
101
12.8
49.1
A12
3 (20%)
4 (0.15%)
2 (0.5%)
1
108.3
12.9
49.5
A13
4 (30%)
1 (0)
4 (1.5%)
2
127.3
14.5
52.3
A14
4 (30%)
2 (0.05%)
3 (1.0%)
1
123.5
13.1
51.7
A15
4(30%)
3(0.1%)
2 (0.5%)
4
113.1
12.2
50.8
A16
4 (30%)
4 (0.15%)
1 (0%)
3
85.5
10.3
49.2
Note.: mCA, PPF, SF are the mass content of coarse aggregate, volume content of polypropylene, and steel fiber; fcu, k, fcf, and Ec are the cube compressive strength, flexural tensile strength, and elastic modulus of concrete block.
