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

Table 1

Test results of FSW materials.

Evaluation items	Material		Test result	Specified value	Test method
Impurity content (%)	FSW		—	≤1 (GB/T 14685)	Sorting and weighing
Apparent density (g·cm^−3)	FSW	Large	2.629	—	Volumetric flask method and basket method
		Medium	2.613
		Small	2.775
Water absorption (%)	FSW	Large	6.43	—
		Medium	6.64
		Small	8.36
Plasticity index	FSW		8.9	≤26 (JTG 3430-2020)	Liquid-plastic limit combined test (＜0.075 mm)
CBR (%)	FSW		185.21	≥40	CBR test (maximum particle Size ＜40 mm)