A New Design of Bridge-Subgrade Transition Sections Applied in Beijing-Shanghai High-Speed Railway

Table 3

Correlation Table for Unit Prices of Graded Gravel Transformed before and after improvement.

Type	Volume of materials used in each cubic meter (kg/m^3)				Unit price (yuan/m^3)
	Cement	Coal ash	Tail sand	Graded gravel
Unit price for mobilization (yuan/ton)	285	87	26	50	/
Abnormal mortar	400	400	/	/	138.2
Graded gravel (+5% cement)	120	/	1062	1062	111.66
Improved graded gravel	48	72	1062	1062	99.35

Note: the abnormal mortar can be only used within 2 m from the structure (the large-size machines cannot make roller compaction, so small volumes of filling materials will be used).