Optimization of Concrete Containing Polyethylene Terephthalate Powder and Rice Husk Ash Using Response Surface Methodology

Table 3

Real and simulated values for response.

Run	Slump (mm)		Compressive strength (N/mm^2)		Flexural strength (N/mm^2)
	Real	Simulated	Real	Simulated	Real	Simulated
1	42	40.94	24	23.47	2.8	2.74
2	48	49.44	22	22.56	2.6	2.59
3	54	53.61	19	18.97	2.16	2.23
4	43	43.78	18	18.89	1.98	2.16
5	50	49.78	20	19.22	2.18	2.07
6	52	51.44	17	16.89	1.85	1.78
7	40	40.28	15	14.64	1.76	1.64
8	45	43.78	16	16.22	1.52	1.63
9	42	42.94	15	15.14	1.40	1.40