t3501-s06-004 - (5 pts.) 11. What are the differences among...

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1 CGN 3501 TEST NO. 4 NAME _________________________ 4 / 2 6 / 0 6 This is a Closed-Book Test. The use of a calculator is not allowed. 1. Describe three similarities between asphalt and tar. (5 pts.) 2. Describe three differences between asphalt and tar. (5 pts.) (3 – 6) Describe (A) the purpose of the test, (B) how the test results are reported, and (C) the meaning or significance of the test results for each of the following tests on asphalt cement: 3. Flash point 4. Ductility
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2 5. Solubility 6. Absolute viscosity 7. What is the main difference between the usages Cleveland Open Cup and the Tag Open Cup flash point tests? (5 pts.) 8. What is the range of penetration index of a normal paving asphalt cement? What is the meaning of a high or a low penetration index? (5 pts.)
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3 9. Describe how the results of the ring and ball softening point test and penetration test can be used to measure the penetration index of an asphalt? (10 pts.) 10. What is a cutback asphalt? Give the names of the three main types of cutback asphalts.
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Unformatted text preview: (5 pts.) 11. What are the differences among the three types of cutback asphalt in terms of the solvents used? (5 pts.) 4 12. What are the three conventional methods for grading of asphalt cements? Describe (A) the tests used, and (B) the nomenclature used to denote the different grades for each grading method. Give an example for each method. (15 pts.) 13. What is an asphalt emulsion? (5 pts.) 5 14. Describe the differences in the setting and mixing characteristics of Rapid-Setting (RS), Medium-Setting (MS) and Slow-Setting (SS) asphalt emulsions. For each type of asphalt emulsion, give a possible application in pavement construction and explain why it is the best type of asphalt emulsion to be used for that application. (15 pts.) 15. Describe a typical vertical stress distribution in a pavement structure due to a wheel load. How is it considered in the design of a conventional asphalt pavement structure? (5 pts.)...
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This note was uploaded on 05/26/2011 for the course CGN 3501 taught by Professor Mang during the Fall '10 term at University of Florida.

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t3501-s06-004 - (5 pts.) 11. What are the differences among...

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