Research Article
Strengthening Effect of Prestressed Near-Surface-Mounted CFRP Tendon on Reinforced Concrete Beam
Table 2
Commercialized CFRP tendons.
| | Characteristics | Leadline™ | CFCC | Carbon-Stress® | Carbopree® | Aslan200 | CarboDur® | CFK |
| | Fiber | Carbon | Carbon | Carbon | Carbon | Carbon | Carbon | Carbon | | Resin | Epoxy | Epoxy | Epoxy | Epoxy | Epoxy | Epoxy | Epoxy | | Fiber volume ratio | 0.65 | 0.65 | 0.65 | — | — | 0.68 | — | | Tensile strength (GPa) | 2.25–2.55 | 2.69 | 2.7 | 2.3 | 2.1–2.2 | 2.8 | 1.3–2.05 | | Elastic modulus (MPa) | 142–150 | 155 | 158.8 | 130 | 124 | 160 | 165–210 | | Bond strength (MPa) | 4–20 | 7–11 | — | 13.7 | 8.45 | — | — | | Max. Strain (%) | 1.3–1.5 | 1.7 | 1.7 | 1.8 | 1.67–1.81 | 1.69 | 1.56 | | Thermal exp. coeff. (×10−6) | −0.9 | 0.6 | 2 | — | −9 | — | — | | Relaxation (%) | 2–3 | 1.3 | 1 | — | Negligible | — | — | | Supplier | Mitsubishi Plastics Infratec Co. (Japan) | Tokyo Rope (Japan) | Nedri (Netherlands) | Sireg (Italy) | Hughes Brothers (USA) | SIKA (Swiss) | S&P (Swiss) | | Reference | [4] | | [12] | [13] | — | — | — |
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