Optimization Analysis of Mechanical Properties of Fly Ash-Based Multicontent Gasification Slag Paste Filling Material

Table 3

Optimization of and expansion under different compressive strengths.

Matching number	Ratio number factor parameter	3 d uniaxial compressive strength (MPa)	Degree of expansion (mm)
4	X1 = 25%; X2 = 85%; X3 = 1 : 6; X4 = 9%	1.468	218
11	X1 = 15%; X2 = 80%; X3 = 1 : 6; X4 = 12%	1.088	210
16	X1 = 20%; X2 = 85%; X3 = 1 : 7; X4 = 9%	1.404	217.5
18	X1 = 25%; X2 = 80%; X3 = 1 : 5; X4 = 9%	1.016	246.5
20	X1 = 25%; X2 = 80%; X3 = 1 : 7; X4 = 9%	0.740	235
22	X1 = 20%; X2 = 85%; X3 = 1 : 6; X4 = 6%	0.992	229.5