.3.1 . wL LL . , .
wP PL .
.3.2 , , wL LL :
LL = 1,48 × wL - 8,3; (.1)
wL = (LL + 8,3) / 1,48. (.2)
.3.3 wL LL PI, IP, IL, IC .
.3.4 - (fine graded soils) [1] [2] (. .2). , , , .
. .2. (Plasticity Chart).
:
CH - fat clay, CL - lean clay, ML - silt, MH - elastic silt, CL-ML - silty clay,
OH - organic clay with high plasticity, OL - organic clay with low plasticity.
: PI = 0,73 × (LL - 20)
.3.5 , . 5 % (inorganic soil) , CH, CL, MH ML. 5 % - (organic soil) , OH OL. 50 % (Pt).
.3.6 LL 0 /LLN. LL 0 /LLN ≤ 0,75, (organic soil), 0,75 - (inorganic soil).
.3.7 .2
.3.8 (inorganic soil) [2] - (Flow Chart), .
.3.9 , - , [1] [2] 25100, .6 .7.
.6 - , [1] [2] 25100
[1] [2] | 25100 | ||||
PI, % | LL, % | ||||
Fat clay | CH | > 45 | > 65 | ||
28 - 45 | 45 - 76 | ||||
19 - 28 | 50 - 53 | ||||
Lean clay | CL | 19 - 28 | 36 - 50 | ||
11 - 19 | 22 - 45 | ||||
7 - 11 | < 32 | ||||
Silty clay | CL - ML | 4 - 7 | < 30 | ||
Elastic silt | MH | > 53 | > 92 | ||
35 - 53 | 68 - 114 | ||||
24 - 35 | 52 - 102 | ||||
< 24 | 50 - 68 | ||||
Silt | ML | 15 - 24 | 41 - 50 | ||
< 15 | < 41 | ||||
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|
.7 - - , [1] [2] 25100
[1] [2] | 25100 | ||||
PI, % | LL, % | ||||
Organic clay with high plasticity | OH | > 47 | > 68 | ||
29 - 47 | 44 - 98 | ||||
19 - 29 | 50 - 62 | ||||
13 - 19 | 50 - 51 | ||||
Organic clay with low plasticity | OL | 19 - 29 | 36 - 50 | ||
13 - 19 | 25 - 50 | ||||
< 13 | < 41 | ||||
Peat | Pt | ||||
.3.10 - IL I [1] .8.
.8 - - IL I
25100 | [1] | |||
IL | I | |||
IL < 0 | very stiff | |||
0 ≤ IL ≤1,0 | very soft - stiff | |||
IL > 1,0 | very soft | |||
IL < 0 | very stiff | |||
0≤ IL ≤ 0,25 | stiff | |||
0,25< IL ≤ 0,5 | firm - stiff | |||
0,5< IL ≤ 0,75 | soft - firm | |||
0,75< IL ≤ 1,0 | very soft - firm | |||
IL > 1,0 | very soft - soft | |||
IL < 0 | very stiff | |||
0≤ IL ≤ 0,25 | stiff | |||
0,25< IL ≤0,5 | firm - stiff | |||
0,5< IL ≤ 0,75 | firm | |||
0,75< IL ≤ 1,0 | soft - firm | |||
IL > 1,0 | very soft - soft | |||
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()
ρ | Soil density | |
ρ d | Dry soil density | |
ρ s | Solid particles density | |
ρ w | Water density | |
e | Void ratio | |
e max | - | Maximum index void ratio |
e min | - | Minimum index void ratio |
ID | Density index | |
w | Water content | |
Sr | Degree of saturation | |
wL | Liquid limit | |
wP | Plastic limit | |
Ip | Plasticity index | |
IL | Liquidity index | |
d | Particle diameter | |
Cu | Uniformity coefficient | |
k | Coefficient of permeability | |
T | Temperature | |
E | Modulus of deformation | |
Rc | Tensile strength in uniaxial compression | |
RQD | Rock Quality Designation | |
mvf | Coefficient of volume compressibility | |
ρ i | Ice density | |
ρ f | Frozen soil density | |
S rf | Degree of soil pores filling with ice and unfrozen water | |
wtot | Total water content | |
wic | Water content at the expense of ice-cement | |
ww | Water content at the expense of not frozen water | |
wm | , | Water content of frozen soil located between ice prolayers |
itot | Total volume content of ice | |
ii | Volume content of ice at the expense of ice prolayers | |
iic | - | Volume content of ice at the expense of ice-cement |
Tbf | Ground freezing point | |
ε fh | Frost heave rate | |
Dsal | Soil salinity degree |
[1] | O 14688-2:2004 | - - 2: (ISO 14688-2:2004Geotechnical investigation and testing - Identification and classification of soil - Part 2: Classification principles and quantification of descriptive characteristics) |
[2] | 2487-2000 | (ASTM D 2487-2000 Standard Test Method for Classification of Soils for Engineering Purposes) |
[3] | IO/T 17892-12:2004 | - - 12: (ISO/TS 17892-12:2004 Geotechnical investigation and testing - Laboratory testing of soil - Part 12: Determination of the Atterberg limits) |
[4] | 4318-2000 | , (ASTM D 4318-00 Standard Test Method for Liquid Limit, Plastic Limit, and Plasticity Index of Soil) |
[5] | . .. , .. . .: , 2008. 520 . | |
[6] | .. , .. . . .: ӻ, 2008. 544 . | |
[7] | .. . .: - ѻ, 1999. 263 . |
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