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

Table 6

Calculation formula of resilient modulus and CBR under different compactness in FSW.

Position of filler application (below the top of roadbed) (m)	Compactness (%)
	Expressway and first-class highway	Second-class highway	Third- and fourth-class highway
Upper roadbed	≥96	≥95	≥94
Lower roadbed	≥96	≥95	≥94
Upper embankment	≥94	≥94	≥93
Lower embankment	≥93	≥92	≥90

Note: (40% ≤ CBR ≤ 170%), (170% ＜ CBR ≤ 190%), (30% ≤ CBR ≤ 120%), (120% ＜ CBR ≤ 140%), (10% ≤ CBR ≤ 30%), (30% ＜ CBR ≤ 40%), where , _, and are the resilient modulus values of the test piece when the compactness is not less than 96%, 93%, and 90%, respectively.