Experimental Research on Mix Ratio of Construction Waste Cemented Filling Material Based on Response Surface Methodology

Table 3

Actual and coded values of the experimental factors.

Wet fly ash/construction waste ratio	Talbol gradation index ofconstruction waste	The percentage of water reducingagent in cement (%)	Coded value
x1	x2	x3
0.45	0.3	0.6	1
0.50	0.4	0.7	0
0.55	0.5	0.8	−1