2025/2026 Exam Questions and Answers
| A+ Score Assured
what are bituminous materials? - 🧠ANSWER ✔✔a solid, semisolid or
viscous material, natural or manufactured, composed principally of various
mixtures of complex hydrocarbons
asphalts - 🧠ANSWER ✔✔cementitious materials composed largely of
bitumens
tars - 🧠ANSWER ✔✔condensate from destructive distillation of petroleum,
coal, wood, or shale
what did the pitch drop experiment demonstrate? - 🧠ANSWER
✔✔demonstrates the fluidity and high viscosity of pitch, a derivative of tar
once used for waterproofing boats
, natural asphalts - 🧠ANSWER ✔✔- lake asphalt
- gilsonite
- rock asphalt
qualities of petroleum asphalt - 🧠ANSWER ✔✔- fractional distillation: distill
above 900F to drive off volatiles
- destructive distillation: above 1100F for cracking
classification of petroleum asphalts - 🧠ANSWER ✔✔- asphalt cement
- cutback asphalt
- emulsified asphalt
qualities of asphalt cement - 🧠ANSWER ✔✔- blend of hydrocarbons of
different molecular weights
- heavier molecular-weight hydrocarbons, harder and more viscous
- semisolid materials at room temp
- heated before applying
- most common binder material used in pavements