ASPHALT QUESTIONS AND CORRECT
ANSWERS
Thin-film oven test ✅✅ CORRECT ANSW--Used to simulate the aging that takes place during the
production of hot mix and during 1st year of pavement's life
Ductility test ✅✅ CORRECT ANSW-Workability
Solubility ✅✅ CORRECT ANSW--Determines the purity of the asphalt cement
-The Asphalt cement will soluble in a particular solvent
RAP ✅✅ CORRECT ANSW-Recycled Asphalt Pavement
-Milling (grinding) removal of old asphalt pavements and reused in new hot mic asphalt pavements
Asphalt can be modified into liquid form known as ___ or ____ ✅✅ CORRECT ANSW-Cutback
Asphalt or an Emulsion
Saybolt Furol Viscosity Test ✅✅ CORRECT ANSW-Measures anionic and cationic emulsions
Distillation test ✅✅ CORRECT ANSW-Used to determine the relative proportions of asphalt
cement and water in the asphalt emulsion
Settlement test ✅✅ CORRECT ANSW-Detects the tendency of asphalt globules to "settle out"
during storage of emulsified asphalt
Sieve test ✅✅ CORRECT ANSW-Determine quantitatively the percentage of asphalt cement
present in the form of pieces, strings, or relatively large globules
Cationic ✅✅ CORRECT ANSW-Positively charged Emulsion
Anionic ✅✅ CORRECT ANSW-Negatively charged Emulsion
, Basic requirements for an asphalt pavement ✅✅ CORRECT ANSW-1. Have sufficient total
thickness and internal strength to carry expected traffic loads
2. Prevent penetration or internal accumulation of moisture.
3. Have top surface that's smooth and resistant to wear, distortion, skidding, and deterioration by
weather and de-icing chemicals
Courses of Asphalt Pavement (Top to Bottom) ✅✅ CORRECT ANSW-1. Surface Course
2. Binder Course
3. Base Course
4. Sub-base course
5. Subgrade
Factors that determine asphalt pavement thickness ✅✅ CORRECT ANSW-1. Traffic
2. Subgrade strength
3. Strength and other influencing characteristics of the material available or chose for the layers or
courses in the total asphalt pavement structure
4. Any other special factors
The weight and volume of ____ that a road is expected to carry initially and throughout its design life
influence the required thickness of asphalt pavement structure, as well as mix selection and mix
design. ✅✅ CORRECT ANSW-Traffic
HMA (hot mix asphalt) ✅✅ CORRECT ANSW-Asphalt concrete paving mixtures prepared in a hot
mix plant
-Considered highest quality type of asphalt mixture bc the plant removes all ambient moisture from
aggregates which ensures the best bond between aggregates and asphalt binder
Difference between Asphalt and Tar ✅✅ CORRECT ANSW-Asphalt is soluble in petroleum, tar is
not.
Asphalt has bitumens, tar has low bitumens
ANSWERS
Thin-film oven test ✅✅ CORRECT ANSW--Used to simulate the aging that takes place during the
production of hot mix and during 1st year of pavement's life
Ductility test ✅✅ CORRECT ANSW-Workability
Solubility ✅✅ CORRECT ANSW--Determines the purity of the asphalt cement
-The Asphalt cement will soluble in a particular solvent
RAP ✅✅ CORRECT ANSW-Recycled Asphalt Pavement
-Milling (grinding) removal of old asphalt pavements and reused in new hot mic asphalt pavements
Asphalt can be modified into liquid form known as ___ or ____ ✅✅ CORRECT ANSW-Cutback
Asphalt or an Emulsion
Saybolt Furol Viscosity Test ✅✅ CORRECT ANSW-Measures anionic and cationic emulsions
Distillation test ✅✅ CORRECT ANSW-Used to determine the relative proportions of asphalt
cement and water in the asphalt emulsion
Settlement test ✅✅ CORRECT ANSW-Detects the tendency of asphalt globules to "settle out"
during storage of emulsified asphalt
Sieve test ✅✅ CORRECT ANSW-Determine quantitatively the percentage of asphalt cement
present in the form of pieces, strings, or relatively large globules
Cationic ✅✅ CORRECT ANSW-Positively charged Emulsion
Anionic ✅✅ CORRECT ANSW-Negatively charged Emulsion
, Basic requirements for an asphalt pavement ✅✅ CORRECT ANSW-1. Have sufficient total
thickness and internal strength to carry expected traffic loads
2. Prevent penetration or internal accumulation of moisture.
3. Have top surface that's smooth and resistant to wear, distortion, skidding, and deterioration by
weather and de-icing chemicals
Courses of Asphalt Pavement (Top to Bottom) ✅✅ CORRECT ANSW-1. Surface Course
2. Binder Course
3. Base Course
4. Sub-base course
5. Subgrade
Factors that determine asphalt pavement thickness ✅✅ CORRECT ANSW-1. Traffic
2. Subgrade strength
3. Strength and other influencing characteristics of the material available or chose for the layers or
courses in the total asphalt pavement structure
4. Any other special factors
The weight and volume of ____ that a road is expected to carry initially and throughout its design life
influence the required thickness of asphalt pavement structure, as well as mix selection and mix
design. ✅✅ CORRECT ANSW-Traffic
HMA (hot mix asphalt) ✅✅ CORRECT ANSW-Asphalt concrete paving mixtures prepared in a hot
mix plant
-Considered highest quality type of asphalt mixture bc the plant removes all ambient moisture from
aggregates which ensures the best bond between aggregates and asphalt binder
Difference between Asphalt and Tar ✅✅ CORRECT ANSW-Asphalt is soluble in petroleum, tar is
not.
Asphalt has bitumens, tar has low bitumens
