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

Mix proportion	NaOH molarity	% of RFA replacement	% of flow	Compressive strength (MPa)	Flexural strength (MPa)	Fracture energy (N/m)	Peak load (kN)	Deflection at peak load (mm)
1:1	2 M	0%	125	62.58	8.82	85.48	2.16	0.148
		10%	125	60.12	8.47	80.89	2.11	0.152
		20%	120	57.28	7.73	78.37	2.01	0.161
		30%	115	54.77	6.58	72.21	1.88	0.176
		40%	110	50.18	5.52	66.48	1.74	0.192
	4 M	0%	120	65.26	9.14	85.82	2.24	0.143
		10%	115	63.87	8.81	83.13	2.19	0.149
		20%	110	62.42	8.13	81.24	2.08	0.158
		30%	105	58.72	7.04	76.68	1.94	0.173
		40%	95	52.66	5.79	72.63	1.79	0.189
	6 M	0%	115	68.47	9.58	84.48	2.32	0.135
		10%	110	66.23	9.27	82.56	2.26	0.141
		20%	105	65.71	8.54	80.24	2.17	0.149
		30%	100	60.11	7.22	76.00	2.02	0.163
		40%	90	54.4	6.03	72.41	1.88	0.179
	8 M	0%	105	72.48	9.66	75.49	2.44	0.122
		10%	100	70.92	9.34	73.72	2.39	0.127
		20%	95	68.53	8.62	73.32	2.29	0.136
		30%	90	63.67	7.38	67.69	2.14	0.151
		40%	80	55.25	6.11	63.40	1.99	0.167
	10 M	0%	95	76.59	9.79	74.34	2.58	0.107
		10%	90	74.70	9.45	73.72	2.52	0.112
		20%	85	70.55	8.77	73.32	2.41	0.121
		30%	80	65.83	7.54	66.70	2.27	0.136
		40%	70	58.37	6.28	60.32	2.12	0.151