Behavior of Small-Scale Concrete Cylinders in Compression Laterally Confined by Basalt Fiber and PEN Fiber Reinforced Polymer Composites

International Journal of Concrete Structures and Materials

Table 3 Tensile properties of BF, PEN fiber and adhesive.

Type	Strength (MPa)		Rupture strain (%)		E₁ (GPa)	E₂ (GPa)
Type	Mean	Standard deviation	Mean	Standard deviation	E₁ (GPa)	E₂ (GPa)
BF roving	1226	62.7	1.95	0.17	68.4	–
PEN fiber roving	822	18.1	8.03	0.51	17.4	8.30
PEN fiber sheet	842	25.9	9.01	0.71	17.5	8.33
PEN FRP	912	27.1	9.13	0.63	21.4	8.59
Adhesive	41	1.7	2.58	0.25	1.6	–

1. E₁ = secant modulus corresponding to 1% strain; 2. E₂ = slope of the second line for PEN fiber; 3. PEN FRP = PEN sheet + adhesive, amount of adhesive used for PEN FRP is 100% of fiber by vol.; average of twelve tests for BF and ten tests for PEN fiber.