Questions and Correct Answers.
How many basic states of soil exist? - Answer 4
The diameter of the soil thread for the plastic limit test is equal to 1/16th of an inch. - Answer
FALSE
The length of groove closure for the liquid limit test is equal to 1/2 inch. - Answer TRUE
If the liquid limit of a soil is equal to 42 and the plastic limit is equal to 20, what is the plasticity
index of this soil? - Answer 22 (SUBTRACT)
The demarcation between a soil of low plasticity and a soil of high plasticity is a liquid limit of
what? - Answer 50
Which of the following is true about group symbols? - Answer First letter describes the soil
and the second letter describes either the liquid limit or the gradation
Who is considered the father of modern soil mechanics? - Answer Karl Terzaghi
Match the clay mineral to the specific surface.
Montmorillonite
Kaolinite
Illite - Answer Montmorillonite - 100-800 M2/gram
Kaolinite - 10-20
Illite - 65-100
Mechanical weathering creates a change in chemical composition. - Answer FALSE
Which of the following are true for Stoke's Law? - Answer all particles are spheres
no side effects from the container
no turbulence exists - laminar flow conditions