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Ashfalt comes from under ground near mines,not from volcanos.

They mine ashfalt for roads.

Ashfalt is not a volcanic rock!

Not usually. While asphalt can be found in natural deposits known as asphaltum, generally asphalt is produced as a byproduct of oil refining, produced as a distillation fraction during the refining process. It is a refined version of the bitumen in crude oil, and added to gravel and heated, then compressed to a hard, flat surface, produces a flat and durable road surface.

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Q: Where does asphalt come from?
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Related questions

Why does asphalt shimmer when it is very hot?

The asphalt expands, and the oils start to come out. The sun then shines off of the oils.


What is the difference between cold mix asphalt and cutback asphalt?

Cold Mix Asphalt is a mixture of aggregate and asphalt. Cutback asphalt is a liquid asphalt. Cold Mix Asphalt is a mixture of Aggregate and Asphalt. The Asphalt is usually am emulsion asphalt or a cutback asphalt. An emulsion asphalt is asphalt cement blended with water. Cutback asphalt is asphalt cement blended with a fuel oil, kerosene, or a naptha. The water, fuel oil, kerosene or Naphta evaporates and leaves the asphalt.


Why is asphalt not called tar?

It is in some places. These days asphalt and tar have apparently come to have the same meaning ;- A dark bituminous product from coal or petroleum ,used in surfacing roads.


What do you call what is on top of the road?

depending on what you are actually meaning,tarmac,macadam,concrete,and asphalt are what come to mind.


How do you spell asphalt?

Asphalt is the correct spelling.


How do you write a sentence with the word asphalt in it?

Use asphalt as a noun. I fell on the asphalt and hurt my knee.


What is an air-blown asphalt?

An air-blown asphalt is a form of asphalt produced by blowing air through molten asphalt to raise its softening point.


What is hot mix asphalt?

The main asphalt paving product is hot mix asphalt, in which asphalt cement is used to bind a mixture of stone, sand, and gravel.


Is an asphalt road homogenous or heterogenous?

An asphalt road is considered heterogeneous. This is because the asphalt in the road is not uniform or constant in structure.


Is asphalt a noun?

Yes, the word asphalt is a noun as well as a verb. The noun asphalt is a common, concrete noun, mass (uncountable) noun; a word for a substance. The verb asphalt is to cover or pave with asphalt. Example sentences: Noun: The asphalt on our driveway is starting to crack. Verb: Our road is closed today so the town can asphalt it.


What is the specific gravity of asphalt?

For the density of compacted asphalt pavements: 1,75-2,4 g/cm3. For liquid asphalt: approx. 1 g/cm3.


What is the abbreviation for asphalt?

AC is an abbreviation for asphalt. The terms "asphalt (or asphaltic) concrete", "bituminous asphalt concrete" and the abbreviation "AC" are typically used only in engineering and construction documents and literature. ASPH or AP is the abbreviation of Asphalt.