Strength Development of High-Strength Ductile Concrete Incorporating Metakaolin and PVA Fibers

Table 2

Properties of reinforcing fibers for cementitious composites [16, 17, 33].

Fiber type	Tensile strength (MPa)	Young’s modulus (GPa)	Fiber elongation (%)	Specific gravity	Remarks
PVA fiber	880~1600	25~40	6~10	1.3	—
Polypropylene	500~700	6~7	20	0.91	—
Nylon fiber	750~900	3.4~4.9	13~25	1.10	—
Steel fiber	1200	200	3~4	7.85	Heavy, rusts
Glass fiber	2200	80	0~4	2.78	Weak in alkali
Asbestos	620	160	0.6	2.55	Health risky
Kevlar	3600	65	4.1	1.45	Costly, specialized use
Basalt fiber	992	7.6	2.56	2.6	—