14.2 UHPCC Material Model
483
Figure 14.2 presents the effect of fiber volume fraction on the five parameters, i.e.,
T, T 1 , ε 1 , ε 2 and ε f rac .
0.0
0.5
1.0
1.5
2.0
2.5
6.5
7.0
7.5
8.0
8.5
9.0
T(MPa)
Fiber volume fraction(%)
Experimental data
Linear fit
1.00
1.25
1.50
1.75
2.00
5.2
5.6
6.0
6.4
6.8
T
1 (MPa)
Fiber volume fraction (%)
Experimental data
Linear fit
(a)
(b)
0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50
0.00084
0.00086
0.00088
0.00090
0.00092
0.00094
0.00096
Experimental data
Linear fit
Fiber volume fraction (%)
1.00 1.25 1.50 1.75 2.00 2.25 2.50
0.0010
0.0012
0.0014
0.0016
0.0018
0.0020
0.0022
Fiber volume fraction (%)
Experimental data
Linear fit
(c)
(d)
1.00 1.25 1.50 1.75 2.00 2.25 2.50
0.0012
0.0013
0.0014
0.0015
0.0016
0.0017
0.0018
0.0019
0.0020
Experimental data
Linear fit
Fiber volume fraction (%)
(e)
Fig. 14.2 Influence of fiber volume fraction on the tensile strength T (a), platform stress T 1 (b),
first softening strain ε 1 (c), second softening strain ε 2 (d) and fracture strain ε f rac (e)