Table 1 Soil properties.

From: Field study of bearing performance of combined grouted piles in strongly weathered mudstone strata with bored piles

Soil layer

ρ (kN/m3)

c (kPa)

φ (o)

qak (kPa)

qsik (kPa)

qpk (kPa)

Plain fill ①

19.4

10

5

60

7

/

Fine sand ④

20.0

5

31

75

20

/

Strongly weathered mudstone ⑤1

20.5

66.27

35

330

100

1500

Strongly weathered sandstone ⑤2

21.0

20

33

320

90

1450

Moderately weathered sandy mudstone ⑥1

22.0

90

17

820

130

3500

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