Integrated Treatment Technology of Storage-Mining Inclined Goaf under Expressway

Table 2

28-day compressive strength of consolidating objects.

Sample type	Sample number		Type of slurry	Water-solid ratio	Proportion of cement (%)	Curing time (d)	Compressive strength (MPa)	Average compressive strength (MPa)
Construction site	1-1	Top	Cement fly ash	1 : 1.3	20	28	2.8	3.5	3.92
		Bottom		1 : 1.3	20	28	3.1
	1-2	Top		1 : 1.3	20	28	4.7
	2-1	Top		1 : 1.3	20	28	3.6	4.35
		Bottom		1 : 1.3	20	28	4.3
	2-2	Top		1 : 1.3	20	28	1.7
		Bottom		1 : 1.3	20	28	7.6
	2-3	Top		1 : 1.3	20	28	3.7
		Bottom		1 : 1.3	20	28	5.2
Laboratory	1			1 : 1.3	20	28	1.3		1.3

Note: T = top; B = bottom.