Polyvinyl Alcohol Fiber Length Optimization for High Ductility Cementitious Composites with Different Compressive Strength Grades

Table 3

Mixture proportions of HDCCs by weight.

Mixture	Cement	Fly ash	Sand	Water	HPWR/binder (%)	HPMC/Binder (%)	PVA fiber (by volume)
0 (%).30–80%-x	0.2	0.8	0.3	0.3	0.17	0.04	2.0
0.30–60%-x	0.4	0.6	0.3	0.3	0.19	0.04	2.0
0.25–60%-x	0.4	0.6	0.3	0.25	0.32	0.05	2.0
0.22–60%-x	0.4	0.6	0.3	0.22	1.0	0.1	2.0

Note. The symbol ‘x’ represents the fiber length, that is, 0.30–80%-6 is a mixture with a water/binder ratio of 0.30, a fly ash/cement ratio of 80%, and PVA fibers with a length of 6 mm.