Where is Asphalt Concrete found?
Asphalt Concrete
Got a photo? Identify rocks instantly with the Rockby app
Open the appAsphalt Concrete occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Asphalt Concrete
Roads and Highways
Ubiquitous globally as the primary surfacing material for transportation infrastructure.
Parking Lots
Commonly used for surfacing parking areas due to its durability and cost-effectiveness.
Airports
Used for runways, taxiways, and aprons, often with specialized high-strength formulations.
Industrial Pavements
Found in industrial facilities, ports, and storage yards.
Collecting tips
- Visual Identification. Look for dark, granular, paved surfaces. The presence of aggregate particles embedded in a black, tar-like matrix is characteristic.
- Contextual Clues. Asphalt concrete is always found in constructed environments, never in natural geological formations.
- Odor. Freshly laid asphalt concrete or material that has been heated may emit a characteristic petroleum-like odor.
Quick Check
- Color:
- Dark gray to black
- Luster:
- Dull to greasy/waxy
- Streak:
- Black to dark brown (if a streak can be obtained, which is difficult due to its composite nature)
Explore Asphalt Concrete
Identify rocks anywhere
Free on iOS, Android, and Web. Photo identification, full database, and your personal collection.