Fiber type

Young’s modulus E (GPa)

Poisson’s ratio μ

Density ρ (10⁻⁹ ton/mm³)

Initial stiffness $k_n^0$ (MPa/mm)

critical traction $t_n^0$ (MPa)

Fracture energy G_f (N/mm)

Aggregate

55

0.2

2.6

-

-

-

HES fiber

200

0.3

7.8

-

-

-

Mortar

28

0.2

2.2

-

-

-

ITZ_AGG

-

-

2.2

30,000

3.0

0.1

ITZ_HES

-

-

2.2

30,000

6.0

0.2

MII

-

-

2.2

30,000

6.0

0.5