Optimization of River Sand with Spent Garnet Sand in Concrete Using RSM and R Programming Packages

Table 2

RSM 13 runs: mix proportions and responses.

Experimental run	Mix Id	Cement (kg/m^3)	Factors				Coarse aggregate (kg/m^3)	Responses
			River sand		Spent garnet sand (SGS)			at 28 days (N/mm^2)
			(%)	(kg/m^3)	(%)	(kg/m^3)		Compressive strength (CS28)	Flexural strength (FS28)
1	M1	413.3	80	569.87	20	142.47	1101.75	28.58	9.08
2	M2	413.3	60	427.40	40	284.94	1101.75	28.99	6.55
3	M3	413.3	40	284.94	60	427.40	1101.75	26.82	5.98
4	M4	413.3	20	142.47	80	569.87	1101.75	24.54	4.62
5	M5	413.3	80	569.87	20	142.47	1101.75	28.58	9.08
6	M6	413.3	60	427.40	40	284.94	1101.75	28.99	6.55
7	M7	413.3	40	284.94	60	427.40	1101.75	26.82	5.98
8	M8	413.3	20	142.47	80	569.87	1101.75	24.54	4.62
9	M9	413.3	80	569.87	20	142.47	1101.75	28.58	9.08
10	M10	413.3	60	427.40	40	284.94	1101.75	28.99	6.55
11	M11	413.3	40	284.94	60	427.40	1101.75	26.82	5.98
12	M12	413.3	20	142.47	80	569.87	1101.75	24.54	4.62
13	M13	413.3	80	569.87	20	142.47	1101.75	28.58	9.08