Comparison To Other Composite Materials
| Properties | FRC | Common HPFRCC | ECC |
|---|---|---|---|
| Design Methodology | N.A. | Use high Vf | Micromechanics based, minimize Vf for cost and processibility |
| Fiber | Any type, Vf usually less than 2%; df for steel ~ 500 micrometre | Mostly steel, Vf usually > 5%; df ~ 150 micrometre | Tailored, polymer fibers, Vf usually less than 2%; df < 50 micrometre |
| Matrix | Coarse aggregates | Fine aggregates | Controlled for matrix toughness, flaw size; fine sand |
| Interface | Not controlled | Not controlled | Chemical and frictional bonds controlled for bridging properties |
| Mechanical Properties | Strain-softening: | Strain-hardening: | Strain-hardening: |
| Tensile strain | 0.1% | <1.5% | >3% (typical); 8% max |
| Crack width | Unlimited | Typically several hundred micrometres, unlimited beyond 1.5% strain | Typically < 100 micrometres during strain-hardening |
Note: FRC=Fiber-Reinforced Cement. HPFRCC=High-Performance Fiber Reinforced Cementitious Composites
Read more about this topic: Engineered Cementitious Composite
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