Construction Materials - Asphalt
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Terms in this set (56)
What is asphalt cement HMA, patching
used for?
What is asphalt emulsion Cold mix & maintenance applications
used for?
What is asphalt cutback Cold mix & maintenance applications
used for?
- Adheres well to most rock
- Waterproof
What are the properties of - Fairly durable
asphalt cement (binder)? - Resistant to reaction with most acids, alkalis, and
salts
- Temperature sensitive
What are the different Surface, base, subbase, and subgrade in that order
layers of asphalt
pavement?
- Viscous at high temps, like a fluid
Asphalt binder is a visco-
- Elastic at low temps, like a solid
elastic material. What
- Its characteristics depend on both temperature and
does that mean?
loading rate
What are asphalt binder's Physical properties
specifications based on?
What is asphalt binder For sealing and waterproofing
alone used for?
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What is asphalt binder + Mainly for hot mix asphalt pavement surfacing (HMA)
aggregate used for?
What is asphalt cement Asphalt binder
made of?
What is asphalt concrete Asphalt binder + aggregate
made of?
True or false, asphalt is True
highly affected by
temperature?
What does asphalt that is Thermal cracking
too brittle result in?
What does asphalt that is Rutting
too soft result in?
What are the different Soft (low viscosity) asphalt
grades of asphalt? Hard (high viscosity) asphalt
Where is soft (low In cold climates to avoid thermal cracking
viscosity) asphalt used?
Where is hard (high In hot climates to avoid rutting
viscosity) asphalt used?
- Very complex chemical composition that depends
on the oil source and refining method
Bituminous materials are
- Mostly hydrogen & carbon atoms with some sulfur,
hydrocarbons. What are
nitrogen, and oxygen
hydrocarbons?
- Molecular structure is more important than
composition
What is the common way Performance grading (PG)
to grade asphalt
nowadays?
What methods of asphalt - Penetration grading (pen)
grading were used in the - Viscosity grading (AC)
past? - Aged residue grading (AR)
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