QUESTIONS AND CORRECT
ANSWERS
What are petroleum-based asphalts? ✅✅ CORRECT ANSW-a waste product from refinery-
processing of crude oil; "bottom of the barrel"; properties depend on refinery operations and
composition depends on crude source
What are the three bituminous material types? ✅✅ CORRECT ANSW-1. asphalt cement/hot mix
asphalt
2. emulsified asphalt
3. cutback asphalt
What are emulsified asphalts composed of? ✅✅ CORRECT ANSW-asphalt cement, water, and an
emulsifying agent
What are cutback asphalts composed of? ✅✅ CORRECT ANSW-asphalt cement with petroleum
solvent
What are the basic steps of refinery operation? ✅✅ CORRECT ANSW-1. pumping
2. storage
3. heating
4. distillation
5. condensing and cooling
6. separation
What is asphalt? ✅✅ CORRECT ANSW-generally a by-product of petroleum distillation; a complex
hydrocarbon; soluble in petroleum products; can be naturally-occuring
What is tar? ✅✅ CORRECT ANSW-generally a by-product of coal production; resistant to
petroleum products