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Ballast
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Ballast
Ballast may refer to:
Objects
- Ballast tank, a device used on ships and submarines and other submersibles to control buoyancy and stability
- Ballast weights, metallic plates used to bring auto racing vehicles up to the minimum mandated weight
- Electrical ballast, used to stabilize the current flow in lamps
- Sailing ballast, ship's ballast, used to weigh a ship down
- Track ballast, the layer of crushed rock or gravel upon which railway track is laid
- Ballast carried aboard an aircraft, for example:
- in gliding to increase speed and/or adjust the aircraft's center of gravity
- in a balloon as a buoyancy compensator
- Ballast tractor, a heavy haulage road vehicle designed to pull or push heavy or exceptionally large loads
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Ballast
© Dieser Eintrag beinhaltet Material aus Wikipedia und ist lizensiert auf GNU-Lizenz für freie Dokumentation
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Ballast
Cette page d’ répertorie les différents sujets et articles partageant un même nom.
- Le ballast est le lit de gravier qui supporte une voie de chemin de fer.
- Les ballasts sont des réservoirs sur les bateaux permettant de changer l'immersion ou l'équilibre.
- Le ballastage est l'action de remplir les ballasts.
- Un ballast est un composant électrique utilisé pour réduire le courant dans un circuit électrique.
- Le poumon-ballast est une technique de plongée sous-marine.
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Ballast
Ballast kan vara:
- En fartygsterm, även benämnd barlast.
- Det makadam (stenmaterial) och grus som ingår i betong (innefattar alla kornstorlekar).
- Det sten- grus- eller annat material som ingår som fyllnad i järnvägsbankar.
- En elektronisk komponent, i ljussammanhang kallad driftdon, som används i urladdningslampor, bl a i natriumlampor.
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Ballast
Con ballast si intende il pietrisco, allo stato naturale o ricavato per frantumazione di rocce, utilizzato per la formazione di massicciate ferroviarie.
Il materiale in natura deve possedere buona resistenza alla compressione, alla frammentazione (coefficiente Los Angeles) ed al gelo; deve inoltre essere esente da fibre di amianto.
Il pietrisco deve presentare, dopo la lavorazione in appositi impianti di frantumazione, vagliatura e lavaggio, una granulometria tipicamente compresa fra 30 e 60 mm, un contenuto ridotto di particelle fini (polveri) ed una forma il più possibile tondeggiante.
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Questo articolo utilizza materiale tratto da Wikipedia® ed è autorizzato sotto la licenza GNU Free Documentation License
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