Effect of Steel Fibres and Low Calcium Fly Ash on Mechanical and Elastic Properties of Geopolymer Concrete Composites

Table 10

Compressive strength (𝑓_cu), flexural strength (𝑓_cr), split-tensile strength (𝑓_cys), and bond strength (𝑓_bd) for various percentage of steel fibre (𝑉_𝑓) obtained using proposed equations.

𝑉𝑓	Strength (MPa)				Percentage increase
	𝑓cu; Equation (2)	𝑓cr; Equation (4)	𝑓cys; Equation (6)	𝑓bd; Equation (8)	𝑓cu	𝑓cr	𝑓cys	𝑓bd
0.0	28.59	3.15	3.32	12.00	0.00	0.00	0.00	0.00
0.1	34.71	3.82	4.01	13.14	20.35	21.26	20.78	9.50
0.2	35.83	4.01	4.21	13.66	25.32	27.30	26.80	13.83
0.3	34.18	3.87	4.07	13.70	19.55	22.85	22.59	14.16
0.4	31.98	3.58	3.76	13.40	11.85	13.65	13.25	11.66
0.5	31.47	3.32	3.45	12.98	10.07	5.39	3.91	8.16