Behavior Evaluation of Ultrahigh-Performance Concrete Beam Containing Para-Aramid Fibers

Table 9

Physical properties of p-A fibers.

Fiber number	Density (g/cm^3)	Diameter (mm)	Length (mm)	Twisted	Tensile strength (MPa)
p-A 4-13	1.44	0.2	13	0	2600
p-A 4-19			19
p-A 4-13T			13	150
p-A 4-19T			19
p-A 10-13		0.32	13	0	1950
p-A 10-19			19
p-A 10-25			25
p-A 10-13T			13	100
p-A 10-19T			19
p-A 10-25T			25
p-A 15-13T		0.38	13	—	—
p-A 15-19T			19
p-A 15-25T			25
p-A 15-30T			30

p-A 4-13T: p-A: para-aramid; 4: denier (4 ⟶ 400D, 10 ⟶ 1000D, 15 ⟶1500 D); 13: length (13, 19, 25, 30); T: twist.