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Lesson 1: Permanent Deformation
3. Permanent deformation rutting classification
Lesson 3 Test

Lesson 1: Permanent Deformation

eLearning lessons
1. What is permanent deformation and why we do not like it
2. Stresses and strains in road structures
3. Permanent deformation rutting classification
4. Survey and monitoring techniques
5. Classifications, analysis and diagnostics
6. Managing permanent deformation
7. Design against permanent deformation

Lesson 3 Test

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Question 1 of 10

1. Question
What type of rutting is shown in picture below?
- Mode 0 rutting
- Mode 1 rutting
- Mode 2 rutting
- Mode 3 rutting
Correct

Incorrect
Question 2 of 10

2. Question
What type of rutting is shown in picture below?
- Mode 0 rutting
- Mode 1 rutting
- Mode 2 rutting
- Mode 3 rutting
Correct

Incorrect
Question 3 of 10

3. Question
What type of rutting is shown in picture below?
- Mode 0 rutting
- Mode 1 rutting
- Mode 2 rutting
- Mode 3 rutting
Correct

Incorrect
Question 4 of 10

4. Question
What is typical for mode 1 rutting?
- The narrow depression in the road surface relative to the original surface.
- The small diameter net cracking in overlaying asphalt.
- It is related mainly to the wear of the pavement due to studded tyres.
Correct

Incorrect
Question 5 of 10

5. Question
What is typical for mode 2 rutting?
- It occurs because of depression of the subgrade.
- Steel nets are never possible improvement method.
- It is only present on roads where the AADT is more than 3000 vehicles per day.
Correct

Incorrect
Question 6 of 10

6. Question
Which of the following statements are true?
- The quality of road structure materials has no effect on permanent deformation, because permanent deformation mostly takes place in subgrade.
- Mode 0 rutting takes place mainly in the unbound base course after construction and after a freeze-thaw cycle.
- Mode 3 rutting occurs when the wearing course material does not have enough fines to bind the aggregates together.
- Good results cannot be obtained by treating the subgrade of a road with Mode 1 rutting with traditional stabilizers, because Mode 1 rutting problems are usually caused by a weak subgrade.
Correct

Incorrect
Question 7 of 10

7. Question
Which of the following statements are true?
- Pumping is a big problem on weak roads built on peat or silty subgrade.
- High frost heave increases pumping problems.
- Even low repeated loads can cause pumping.
- A thin pavement or surface dressing prevents pumping problems.
Correct

Incorrect
Question 8 of 10

8. Question
A 20 cm thick new structure on the top of the old structure is good for:
- Mode 1 rutting problems
- Mode 2 rutting problems
- Mode 3 rutting problems
- Mode 2 rutting problems on road constructed on peat
Correct

Incorrect
Question 9 of 10

9. Question
Is this problem caused by:
- Mode 0 rutting problems
- Mode 1 rutting problems
- Mode 2 rutting problems
- Mode 3 rutting problems
- Combined Mode 1 rutting and erosion due to poor drainage
Correct

Incorrect
Question 10 of 10

10. Question
What type of rutting is shown in the picture below?
- Mode 0 rutting
- Mode 1 rutting
- Mode 2 rutting
- Mode 3 rutting
Correct

Incorrect

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eLearning lessons

Lesson 1: Permanent Deformation
Lesson 2: Roads on Peat
Lesson 3: Drainage of Low Volume Roads
Lesson 4: Environmental Considerations for Low Volume Roads
Lesson 5: Gravel and Forest Road

English (Updated)
Suomi
Svenska
Norske
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