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WorksheetsDay 30-Oct 18-worksheet-Btech-Consistency limits
Total questions: 15
Worksheet time: 10mins
For a clay soil, LL = 60 %, PL = 30 %, w = 45 %. Its Liquidity Index and Consistency Index are —
(a)
A soil exhibits Ip = 22 and If = 11. Its Toughness Index (It) is
(a)
If a clay shows Activity = 1.5 and % clay = 50 %, then Plasticity Index = (a) %.
For a natural clay, w = 32 %, PL = 20 %, LL = 50 %. Consistency Index (IC) = ? and field condition = ?
(a)
A soil with Liquidity Index > 1 behaves as a solid.
True
False
Thixotropy causes strength increase with time at constant water content.
True
False
(Assertion–Reason) A: Plasticity Index = LL – PL. R: It measures the range of full saturation.
A true, R true
A true, R false
A false, R true
A false, R false
Toughness index indicates (a) at Plastic limit
Shrinkage ratio = % volume reduction per unit reduction in (a) .
In cone-penetration test, the cone penetrates 20 mm in 5 s under 80 g load. This defines the __________.
Plastic limit
Liquid limit
Shrinkage limit
Liquidity index
A fat clay typically has —
High LL and low IP
Low LL and high IP
High LL and high IP
Low LL and low IP
At shrinkage limit, any further reduction in water content causes —
Volume decrease
No change in volume
Pore collapse
Strength loss
Sensitivity value = 3 corresponds to __________.
Insensitive
Little sensitive
Normal sensitive
Extra sensitive
Plastic limit is determined by rolling soil threads of (a) mm diameter.
Relative density quantifies the (a) of cohesionless soils.
