Effect of construction demolition waste as fine aggregate and NaOH molarity on strength and fracture parameters of slag based geopolymer mortars

Journal of Engineering and Applied Science

Table 5 Percentage of flow, compressive strength, flexural strength, fracture energy, peak load values in 1:3 mix

Mix proportion	NaOH molarity	% of RFA replacement	% of flow	Compressive strength (N/mm²)	Flexural strength (MPa)	Fracture energy (N/m)	Peak load (kN)	Deflection at peak load (mm)
1:3	2 M	0%	130	56.66	7.89	81.70	1.96	0.194
		10%	130	54.81	7.67	80.88	1.91	0.199
		20%	125	52.35	6.80	77.72	1.82	0.209
		30%	120	49.48	5.94	69.03	1.69	0.222
		40%	110	43.94	4.83	64.10	1.54	0.237
	4 M	0%	125	59.72	8.36	80.46	2.01	0.189
		10%	120	56.55	7.92	79.29	1.97	0.194
		20%	115	53.10	6.93	75.63	1.87	0.204
		30%	110	50.39	6.08	68.51	1.74	0.217
		40%	100	45.48	5.14	63.63	1.58	0.232
	6 M	0%	120	61.50	8.61	79.85	2.12	0.181
		10%	115	59.37	8.32	78.65	2.08	0.186
		20%	110	56.12	7.29	73.92	1.99	0.197
		30%	105	53.73	6.33	66.46	1.86	0.209
		40%	95	47.85	5.26	62.89	1.71	0.224
	8 M	0%	110	63.69	8.74	78.83	2.24	0.168
		10%	105	60.52	8.48	77.96	2.19	0.174
		20%	100	57.44	7.47	74.50	2.09	0.184
		30%	95	54.42	6.56	66.02	1.97	0.196
		40%	85	48.81	5.48	62.47	1.82	0.212
	10 M	0%	100	68.15	8.89	78.12	2.39	0.153
		10%	95	66.82	8.66	75.80	2.34	0.159
		20%	90	63.37	7.62	72.92	2.23	0.169
		30%	85	60.68	6.71	64.87	2.11	0.181
		40%	75	53.42	5.72	61.05	1.96	0.197