Geotechnical Engineering

DHARM 60 GEOTECHNICAL ENGINEERING 3.9.1 Consistency Limits and Indices—Definitions The consistency limits or Atterberg limits an ...

DHARM INDEX PROPERTIES AND CLASSIFICATION TESTS 61 At the liquid limit the soil grains are separated by water just enough to dep ...

DHARM 62 GEOTECHNICAL ENGINEERING Table 3.5 Consistency classification C.I. LI Consistency 1.00 to 0.75 0.00 to 0.25 Stiff 0.75 ...

DHARM INDEX PROPERTIES AND CLASSIFICATION TESTS 63 graph paper, with the logarithm of the number of blows on the x-axis, and the ...

DHARM 64 GEOTECHNICAL ENGINEERING 45 40 35 30 25 20 LL = 31.5% Flow curve 10 15 20 25 30 40 Number of blowsN(log scale) Fig. 3.1 ...

DHARM INDEX PROPERTIES AND CLASSIFICATION TESTS 65 of the rod so as to have a total sliding weight of (1.48 ± 0.005) N. The rod ...

DHARM 66 GEOTECHNICAL ENGINEERING where wL = liquid limit of the soil, wα = moisture content corresponding to penetration α, α = ...

DHARM INDEX PROPERTIES AND CLASSIFICATION TESTS 67 By analysing the conditions of the soil pat at the initial stage, at the stag ...

DHARM 68 GEOTECHNICAL ENGINEERING coated with a thin layer of vaseline. The dish is then filled with the prepared soil paste in ...

DHARM INDEX PROPERTIES AND CLASSIFICATION TESTS 69 Substituting γd = G e . w () γ 1 + in Eq. 3.46, ws = ()11+ −= e GG e G ...(Eq ...

DHARM 70 GEOTECHNICAL ENGINEERING Also from Eq. 3.47, if the shrinkage limit is already determined by the first approach, G =^1 ...

DHARM INDEX PROPERTIES AND CLASSIFICATION TESTS 71 Sr = ()VV V id i − × 100 ...(Eq. 3.59) The only difference between this and t ...

DHARM 72 GEOTECHNICAL ENGINEERING A qualitative classification based on activity is given in Table 3.6: Table 3.6 Activity class ...

DHARM INDEX PROPERTIES AND CLASSIFICATION TESTS 73 *3.12 THIXOTROPY OF CLAYS When clays with a flocculent structure are used in ...

DHARM 74 GEOTECHNICAL ENGINEERING = 9.80 9.80 (22.45 16.30)−− = 9.80 (9.80 16.15)− = 2.685 ∴ Specific gravity of the soil solids ...

DHARM INDEX PROPERTIES AND CLASSIFICATION TESTS 75 Specific gravity of kerosene at 27°C = 0.773 Determine the specific gravity o ...

DHARM 76 GEOTECHNICAL ENGINEERING Percentage error = (2.694 2.500) 2.694 − × 100 = 7.2. Example 3.5: A pyknometer was used to de ...

DHARM INDEX PROPERTIES AND CLASSIFICATION TESTS 77 Void ratio in the natural sate, e = 0.63 Density Index, ID = ()ee ee max ()ma ...

DHARM 78 GEOTECHNICAL ENGINEERING Initial weight of sand-pouring cylinder + sand = 54 N Weight of cylinder + sand, after filling ...

DHARM INDEX PROPERTIES AND CLASSIFICATION TESTS 79 Dry unit weight, γd = γ (1 + )w 0.0573 = + 23.34 () 1 kN/m 3 = 22.075 kN/m^3 ...