International Journal of Concrete Structures and Materials

Table 1 The measured geometric and mechanical properties of hooked-end fibres.

From: Comparisons Between Pull-Out Behaviour of Various Hooked-End Fibres in Normal–High Strength Concretes

Fibre type	σ ^a_u (MPa)	σ ^b_y (MPa)	l_f (mm)	d_f (mm)	Hook length (mm)				Hook angles (°)			Hook height (mm)
Fibre type	σ ^a_u (MPa)	σ ^b_y (MPa)	l_f (mm)	d_f (mm)	L1	L2	L3	L4	θ₁	θ₂	β	H1	H2
3D 65/60 BG	1150	775–985	60	0.90	2.12	2.95	–	–	45.7	45.5	67.5	1.85	–
4D 65/60 BG	1500	1020–1165	60	0.90	2.98	2.62	3.05	–	30.1	30.8	75.0	4.37	2.20
5D 65/60 BG	2300	1177–1455	60	0.90	2.57	2.38	2.57	2.56	27.9	28.2	76.0	2.96	1.57

^aUltimate strength.
^bYield strength.

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