82
4 Triaxial Compressive Behavior of UHPCC …
Fig. 4.4 Axial deviatoric stress–strain curves of two batches of UHPCC specimens a 95 MPa,
b 129 MPa, reprinted from Ren et al. (2016), copyright 2020, with permission from Elsevier
ε v to the axial and circumferential strains under various confining pressures, respectively. It can be found that, for specimens with σ 3 ≤ 60 MPa, as shown in Fig. 4.4,
softening behavior is observed which is attributed to the development of more cracks.
As the cracking develops, the volumetric strain changes from contraction to dilation
mode. For confining pressures larger than 60 MPa, since the crack development is not
4 Triaxial Compressive Behavior of UHPCC …
Fig. 4.4 Axial deviatoric stress–strain curves of two batches of UHPCC specimens a 95 MPa,
b 129 MPa, reprinted from Ren et al. (2016), copyright 2020, with permission from Elsevier
ε v to the axial and circumferential strains under various confining pressures, respectively. It can be found that, for specimens with σ 3 ≤ 60 MPa, as shown in Fig. 4.4,
softening behavior is observed which is attributed to the development of more cracks.
As the cracking develops, the volumetric strain changes from contraction to dilation
mode. For confining pressures larger than 60 MPa, since the crack development is not