Shear strength of natural peat - Geotechnics of Organic Soils and Peat - page 87

Table 4.1 Laboratory shear box test results of peats ( after Al-Raziqi et al ., 2003).

Angle of

Moisture Organic Liquid von internal

content content limit Post Cohesion friction

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

Banting, Selangor 211 85 294 H1 9-11 9-20

195 79 219 H2 6-11 9-16

832 84 361 H5 8-10 7-10

219 94 316 H6 11-12 9-12

225 85 166 H8 8-12 6-11

Kg. Jawa, Selangor 215 78 180 H3 10-12 6-14

209 89 325 H6 12-14 7-25

786 85 368 H8 7-11 8-13

Kg. Jawa, Selangor 680 85 298 H3 11-12 10-15

747 93 352 H5 10-12 5-10

720 83 282 H7 7-9 9-12

Dengkil, N. Sembilan (west Malaysia) 246 98 305 H2 13-17 3-12

301 98 335 H5 11 13-15

786 83 377 H8 8-9 12-20

Figure 4.3 Friction angle of fibrous, hemic and sapric peats ( after Kazemian et al ., 2012(a)).

so as to have all three varieties: fibrous, hemic and sapric peats. The organic con-
tents were reported to be 94%, 81% and 75% for fibrous, hemic and sapric peats,
respectively. Similarly, the fibre contents were reported to be 79%, 53% and 31%
respectively. Further, Kazemian et al. (2012) have also presented the cohesion of vari-
ous peats (Figure 4.4). The strength parameters of fibrous peat are higher than those
of hemic and sapric peats, as these are affected by the content of fibres, as stated by
Edil (1997).