Gravel
Query URLs
https://term.museum-digital.de/md-de/tag/29590
- Note
- "Gravel /ˈɡrævəl/ is a loose aggregation of rock fragments. Gravel is classified by particle size range and includes size classes from granule- to boulder-sized fragments. In the Udden-Wentworth scale gravel is categorized into granular gravel (2–4 mm or 0.079–0.157 in) and pebble gravel (4–64 mm or 0.2–2.5 in). ISO 14688 grades gravels as fine, medium, and coarse, with ranges 2–6.3 mm to 20–63 mm. One cubic metre of gravel typically weighs about 1,800 kg (or a cubic yard weighs about 3,000 lb).
Gravel is an important commercial product, with a number of applications. Almost half of all gravel production is used as aggregate for concrete. Much of the rest is used for road construction, either in the road base or as the road surface (with or without asphalt or other binders.) Naturally occurring porous gravel deposits have a high hydraulic conductivity, making them important aquifers." - (en.wikipedia.org 18.11.2021)
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Fotografie "Rheinansicht XXVI"
Die Aufnahme zeigt einen...
Object information
Image: Historisches Museum der Pfalz, Speyer - CC BY-NC -
Fotografie "Rheinansicht (XXXII)"
Die Aufnahme zeigt eine...
Object information
Image: Historisches Museum der Pfalz, Speyer - CC BY-NC -
Fotografie "Rheinansicht (XXXV)"
Die Aufnahme zeigt eine...
Object information
Image: Historisches Museum der Pfalz, Speyer - CC BY-NC -
Kiesgrube, Modell
Das ausgestellte Modell...
Object information
Image: Deutsches Straßenmuseum e.V. - CC BY-NC-SA -
Luftaufnahme Neuwied, Stadtteil Block
Schwarzweißfotografie. Diese...
Object information
Image: REM - CC BY-NC-SA
References
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