ASPHALT ACTUAL TEST BANK COMPLETE
QUESTIONS AND ANSWERS GRADED A
PLUS SUCCESS GUIDE
●● What is the primary use of asphalt mixtures?
Answer: Asphalt mixtures, composed of 95 to 97 percent aggregate, are
primarily used in constructing roadways.
●● When can the use of asphalt be traced back to?
Answer: Approximately 6000 B.C.
●● How did ancient civilizations use asphalt?
Answer: As a cement for stonework, waterproofing in pools, paving
streets, and in the mummification process.
●● What is the difference between asphalt and tar?
Answer: Asphalt is soluble in petroleum products and composed mainly
of bitumens, while tar has low bitumen content and is resistant to
petroleum solvents.
●● What are the three classifications of crude oil based on asphalt
content?
,Answer: 1. Asphaltic base crude (almost entirely asphalt) 2. Paraffin
base crude (contains paraffin but no asphalt) 3. Mixed base crude
(contains both paraffin and asphalt)
●● What is the role of the American Society for Testing and Materials
(ASTM) in defining bituminous materials?
Answer: ASTM defines bitumens, asphalt, and tar, providing clarity on
their composition and properties.
●● What is the primary source of asphalt used in construction today?
Answer: Most asphalt is distilled from petroleum crude oil.
●● What percentage of asphalt produced is used in paving and related
industries?
Answer: Approximately 80 percent.
●● What happens to asphalt at high temperatures?
Answer: It becomes a liquid that flows well to coat aggregate, making it
workable during placement.
●● What is the significance of the LaBrea tar pits in Los Angeles?
Answer: They are notable for fossil remains and skeletons of prehistoric
animals found in naturally occurring asphalt.
,●● How does temperature affect the properties of asphalt?
Answer: At cold temperatures, asphalt is hard and brittle; as temperature
increases, it softens and becomes more workable.
●● What is the process used to produce asphalt binders?
Answer: Asphalt binders are produced through a distillation process at a
petroleum refinery.
●● What is the primary unit in the refining process for asphalt?
Answer: The atmospheric distillation tower.
●● What is the role of vacuum distillation in asphalt production?
Answer: It removes additional lighter fractions from crude oil to refine
asphalt further.
●● What is the purpose of adding rubber or polymers to asphalt binders?
Answer: To improve properties for warmer climates and high traffic
demand.
●● What does the penetration test measure in asphalt?
Answer: It is an empirical measure of the relative hardness of asphalt
cement.
, ●● What are the characteristics of coal tars compared to asphalt?
Answer: Coal tars have high viscosities, good adhesive properties, and
are produced as by-products of heating coal.
●● What is the historical significance of Sir Walter Raleigh in relation to
asphalt?
Answer: He obtained Trinidad lake asphalt to caulk his ships during a
voyage to the New World.
●● What are the predominant constituents of asphalt?
Answer: Bitumens that occur naturally or are obtained as a residue from
refining petroleum.
●● What is the visual representation of the relationship between
temperature and stiffness of asphalt?
Answer: A graph showing the transition from a solid to a viscous fluid as
temperature increases.
●● What is the largest deposit of natural asphalt?
Answer: The Bermudez deposit in Venezuela.
●● What are the applications of asphalt in modern construction?
Answer: Used extensively for paving, roofing applications, and as a
waterproofing material.
QUESTIONS AND ANSWERS GRADED A
PLUS SUCCESS GUIDE
●● What is the primary use of asphalt mixtures?
Answer: Asphalt mixtures, composed of 95 to 97 percent aggregate, are
primarily used in constructing roadways.
●● When can the use of asphalt be traced back to?
Answer: Approximately 6000 B.C.
●● How did ancient civilizations use asphalt?
Answer: As a cement for stonework, waterproofing in pools, paving
streets, and in the mummification process.
●● What is the difference between asphalt and tar?
Answer: Asphalt is soluble in petroleum products and composed mainly
of bitumens, while tar has low bitumen content and is resistant to
petroleum solvents.
●● What are the three classifications of crude oil based on asphalt
content?
,Answer: 1. Asphaltic base crude (almost entirely asphalt) 2. Paraffin
base crude (contains paraffin but no asphalt) 3. Mixed base crude
(contains both paraffin and asphalt)
●● What is the role of the American Society for Testing and Materials
(ASTM) in defining bituminous materials?
Answer: ASTM defines bitumens, asphalt, and tar, providing clarity on
their composition and properties.
●● What is the primary source of asphalt used in construction today?
Answer: Most asphalt is distilled from petroleum crude oil.
●● What percentage of asphalt produced is used in paving and related
industries?
Answer: Approximately 80 percent.
●● What happens to asphalt at high temperatures?
Answer: It becomes a liquid that flows well to coat aggregate, making it
workable during placement.
●● What is the significance of the LaBrea tar pits in Los Angeles?
Answer: They are notable for fossil remains and skeletons of prehistoric
animals found in naturally occurring asphalt.
,●● How does temperature affect the properties of asphalt?
Answer: At cold temperatures, asphalt is hard and brittle; as temperature
increases, it softens and becomes more workable.
●● What is the process used to produce asphalt binders?
Answer: Asphalt binders are produced through a distillation process at a
petroleum refinery.
●● What is the primary unit in the refining process for asphalt?
Answer: The atmospheric distillation tower.
●● What is the role of vacuum distillation in asphalt production?
Answer: It removes additional lighter fractions from crude oil to refine
asphalt further.
●● What is the purpose of adding rubber or polymers to asphalt binders?
Answer: To improve properties for warmer climates and high traffic
demand.
●● What does the penetration test measure in asphalt?
Answer: It is an empirical measure of the relative hardness of asphalt
cement.
, ●● What are the characteristics of coal tars compared to asphalt?
Answer: Coal tars have high viscosities, good adhesive properties, and
are produced as by-products of heating coal.
●● What is the historical significance of Sir Walter Raleigh in relation to
asphalt?
Answer: He obtained Trinidad lake asphalt to caulk his ships during a
voyage to the New World.
●● What are the predominant constituents of asphalt?
Answer: Bitumens that occur naturally or are obtained as a residue from
refining petroleum.
●● What is the visual representation of the relationship between
temperature and stiffness of asphalt?
Answer: A graph showing the transition from a solid to a viscous fluid as
temperature increases.
●● What is the largest deposit of natural asphalt?
Answer: The Bermudez deposit in Venezuela.
●● What are the applications of asphalt in modern construction?
Answer: Used extensively for paving, roofing applications, and as a
waterproofing material.
