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Consistency Limit Tests

Consistency limit tests 
CIV142 Geology & Soil Mechanics
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Slide 1: Slide
ConstructionFurther Education (Key Stage 5)

This lesson contains 34 slides, with interactive quizzes, text slides and 3 videos.

time-iconLesson duration is: 120 min

Items in this lesson

Consistency limit tests 
CIV142 Geology & Soil Mechanics

Slide 1 - Slide

Learning Outcomes
By the end of this lesson you will be able to:
  • Describe the terms Liquid, Plastic and Shrinkage Limit
  • Describe and calculate the Plasticity, Liquidity and Consistency Indexes
  • Determine the Volume Change Potential of a Soil
  • Calculate from results the Liquid and Plastic limits of a soil
  • Classify a fine soil

Slide 2 - Slide

Slide 3 - Slide

Slide 4 - Slide

Slide 5 - Slide

Slide 6 - Slide

Which of these best describes
'Liquid Limit'?
timer
0:30
A
The water content at which the soil stops acting as a plastic and starts acting as a solid
B
The water content at which the soil no longer displays permanent deformation and simply fractures when shearing stresses are applied
C
A cohesive soil with an extremely high water content – behaves as a liquid with continual deformation
D
The water content at which the soil stops acting as a liquid and starts acting as a plastic solid

Slide 7 - Quiz

Which of these best describes
'Plastic Limit'?
timer
0:30
A
A cohesive soil that behaves as a plastic and displays permanent deformation
B
The water content at which the soil no longer displays permanent deformation and simply fractures when shearing stresses are applied
C
A cohesive soil with an extremely high water content – behaves as a liquid with continual deformation
D
The water content at which the soil stops acting as a liquid and starts acting as a plastic solid

Slide 8 - Quiz

Slide 9 - Slide

Slide 10 - Slide

A soil has a Plastic Limit of 22% and a Liquid limit of 48%, what is it's Plasticity Index?
timer
0:20
A
70%
B
26%
C
24%
D
2.2%

Slide 11 - Quiz

Slide 12 - Slide

Slide 13 - Slide

Consistency limit tests on a sample of soil indicate a Plasticity Index of 45%, with 95% passing a 425 micron sieve.
What is it's Volume Change Potential?
timer
0:30
A
50% - High
B
43% - High
C
37% - Medium
D
18% - Low

Slide 14 - Quiz

Slide 15 - Slide

Slide 16 - Slide

A soil has a natural water content of 28%, a Plastic limit of 19% and a Liquid Limit of 55%. Calculate it's Liquidity Index.
A
0.25
B
0.36
C
0.48
D
0.63

Slide 17 - Quiz

Slide 18 - Slide

Slide 19 - Slide

Which of these best describes
'Shrinkage Limit'?
timer
0:30
A
A cohesive soil that shrinks in volume with a reduction in water content
B
The water content at which a soil exhibits no further change in volume with decreasing water content
C
A cohesive soil in which it's shrinkage is limited to the volume of the soil being sampled.
D
The water content at which a soil continues to shrink in volume with decreasing water content

Slide 20 - Quiz

Slide 21 - Slide

Slide 22 - Slide

A soil has a natural water content of 28%, a Plastic limit of 19% and a Liquid Limit of 55%. Calculate it's Consistency Index.
A
0.37
B
0.56
C
0.62
D
0.75

Slide 23 - Quiz

Slide 24 - Slide

Slide 25 - Video

Slide 26 - Slide

Slide 27 - Slide

Slide 28 - Slide

Slide 29 - Slide

Slide 30 - Video

Slide 31 - Slide

Slide 32 - Video

Slide 33 - Slide

Learning Outcomes
By the end of this lesson you will be able to:
  • Describe the terms Liquid, Plastic and Shrinkage Limit
  • Describe and calculate the Plasticity, Liquidity and Consistency Indexes
  • Determine the Volume Change Potential of a Soil
  • Calculate from results the Liquid and Plastic limits of a soil
  • Classify a fine soil

Slide 34 - Slide