CEE381 exam 2 questions with verified answers

CEE381 exam 2 questions with verified
answers
Main sources of asphalt binder Ans✔✔✔-Natural deposits and petroleum
(manufactured)


Where are natural deposits found for asphalt binders Ans✔✔✔-lakes and rocks


What ingredient in the asphalt mix is not environmentally friendly Ans✔✔✔-
cutbacks


What's the heaviest to lightest binder mixtures Ans✔✔✔-residue
gas oil
kerosene
naphtha
vapor


What are the three main types of asphalt binders Ans✔✔✔-asphalt cement
asphalt emulsions
asphalt cutbacks


asphalt cement Ans✔✔✔-applied hot
semi-solid
mixed with aggregates
used in asphalt concrete, cracks, and joints

, additives are optional


Asphalt emulsions Ans✔✔✔-applied cold
water and emulsifying agents


Asphalt cutbacks Ans✔✔✔-applied cold
liquid blend of asphalt cement & solvents


Type of asphalt preservation Ans✔✔✔-prime and track coat
fog seal pavement
slurry or chip seal pavement


What is the behavior of asphalt cement Ans✔✔✔-visco-elastic


Why does the behavior of asphalt cement change Ans✔✔✔-with temperature
and speed


Asphalt behavior: stiff and elastic Ans✔✔✔-low temperature
fast speed


Asphalt behavior: soft and viscous Ans✔✔✔-high temperature
slow speed


3 asphalt distresses Ans✔✔✔-rutting
fatigue cracking