hardening & softening of Mohr-coulomb model

[walidation]

Dear engineers,

I am modeling a compression test of fresh concrete (1 hour age) by ABAQUS CAE. According to literature the best plasticity model for such material is Mohr-coulomb model.
I have the following material properties.

Material density ϒ = 2.07 e-9 tonnage/mm3
The Young's modulus E= 0.154 Mpa
Poisson ratio v =0.3
Cohesion C =0.0065 Mpa
Angle of internal friction φ = 20
Dilation angle Ψ = 13

the aim of this simulation to validate stress strain curve of the experiment. Unfortunately the stress-strain curve I obtained is totally different.

I attached my input and resulted curve with that of real experiment.

Any one can help in this regard ?

 

[FEA way]

You may have to adjust some parameters of this material model to fit its behavior to experimental data. A single-element test is likely the best way to perform such calibration.