Study on the Mechanical Properties and Design Parameters of Floor Slabs Waste Subgrade Filler

Table 8

Subgrade settlement observation index.

Subgrade filler	Number of layers	Compaction times	Loose laying depth (cm)	Settlement difference (mm)	Testing equipment
FSW	The first layer	2	30	9.8	22t Vibratory roller, level, level ruler, tape measure, and spray paint
		4		9.0
		6		3.0
		8		1.5
		10		0.8
	The second layer	2	30	5.3
		4		2.5
		6		2.1
		8		1.2
		10		0.6