Shear strength of natural peat - Geotechnics of Organic Soils and Peat - page 88

Figure 4.4 Cohesion of fibrous, hemic and sapric peats ( after Kazemian et al ., 2012(b)).

Table 4.2 Vane shear strength of peat ( after Al-Raziqi et al ., 2003).

Field

Moisture Organic Liquid von vane shear

content content limit Post strength

Location (%) (%) (%) scale (kPa)

Banting, Selangor 211 85 294 H1 10-12

195 79 219 H2 11

832 84 361 H5 10

219 94 316 H6 7-9

225 85 166 H8 4

802 83 362 H10 4-6

Kg. Jawa, Klang 214 79 180 H3 11

225 84 325 H6 8

618 88 368 H8 5

Kg. Jawa, Klang 680 85 298 H3 10-15

747 93 352 H5 5-10

720 83 282 H7 9-12

Dengkil, N. Sembilan (West Malaysia) 246 98 305 H2 9-13

301 98 335 H5 6-10

786 83 377 H8 3-6

Berengbengkel, Central Kalimantan 467-1224 41-99 - H2-H5 6-17

4.3 VANE SHEAR STRENGTH

Table 4.2 shows the vane shear strength of various tropical peats obtained from West
Malaysia using the small field vane shear test. The undrained shear strength of the peat
soil ( S u ) is in the range 3-15 kPa, which is generally much lower than that of mineral
soils (soft clays).