| High Tensile Ductility Fiber reinforced cementitious composites with short cut PVA fibers or PVA-ECC, show high ductility in tensile or flexural behavior. When uni-axial load is added on the PVA-ECC (see Figure 1, step a), the fine crack develops perpendicular to the load axis (see Figure 1, step b). And the reinforcing fibers in this material bridge this crack. As the bridging ability of the reinforcing fibers, such as tensile strength, elastic modulus and bonding strength with the matrix, is high enough, the first crack does not cause catastrophic rupture of the material and the second fine crack appears close to the first crack (see Figure 1, step c). In this manner, fine and multiple cracks develop perpendicular to the load axis with small spacing on this material (see Figure 1, step d and e) and pseudo-strain hardening behavior is observed.
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