Table 8 Salt rock fill compaction... | Emerald Publishing

Table 8

Salt rock fill compaction quality acceptance indices for railway

Structure of subgrade	Index	Qarhan salt lake section of Qinghai-Tibet railway line I	Qarhan salt lake section of Qinghai-Tibet railway line II	Lop nor salt lake section of Hami-Lop nor railway
Bottom layer of subgrade bed	Porosity	N/A	≤23%	≤31%
	Foundation coefficient K30 (MPa)	N/A	≥160	≥120
	Compaction ratio	≥0.85	N/A	N/A
Embankment	Porosity	N/A	≤25%	≤32%
	Foundation coefficient K30 (MPa)	N/A	≥140	≥110
	Compaction ratio	≥0.85	N/A	N/A

Structure of subgrade	Index	Qarhan salt lake section of Qinghai-Tibet railway line I	Qarhan salt lake section of Qinghai-Tibet railway line II	Lop nor salt lake section of Hami-Lop nor railway
Bottom layer of subgrade bed	Porosity	N/A	≤23%	≤31%
	Foundation coefficient K30 (MPa)	N/A	≥160	≥120
	Compaction ratio	≥0.85	N/A	N/A
Embankment	Porosity	N/A	≤25%	≤32%
	Foundation coefficient K30 (MPa)	N/A	≥140	≥110
	Compaction ratio	≥0.85	N/A	N/A

Source(s): Authors’ own work