Good quality track ballast is made of crushed stone. The sharp edges help the particles interlock with each other.Track ballast supports railway sleepers, which carry railway track.
Track ballast is the material which forms the trackbed upon which railroad ties (UK: sleepers) are laid. It is packed between, below, and around the ties.[1] It is used to bear the compression load of the railroad ties, rails, and rolling stock; to facilitate drainage; and keep down vegetation that can compromise the integrity of the combined track structure.[1] Ballast also physically holds the track in place as the trains roll over it. Not all types of railway tracks use ballast.[2]
A variety of materials have been used as track ballast, including crushed stone, washed gravel, bank run (unwashed) gravel, torpedo gravel (a mixture of coarse sand and small gravel), slag, chats, coal cinders, sand,[3] and burnt clay.[4] The term "ballast" comes from a nautical term for the stones used to stabilize a ship.[1]
^ abcSolomon (2001), p. 18.
^ Tubular Modular Track
^Kellogg, H. W. (1946). "Selection and Maintenance of Ballast" (PDF). American Railway Engineering and Maintenance-of-Way Association. Retrieved 27 March 2021.
^Beyer, S. W.; Williams, I. A. (1904). The Geology of Clays. pp. 534–537. Archived from the original on 13 August 2010.
Trackballast is the material which forms the trackbed upon which railroad ties (UK: sleepers) are laid. It is packed between, below, and around the ties...
rails, fasteners, railroad ties (sleepers, British English) and ballast (or slab track), plus the underlying subgrade. It enables trains to move by providing...
addition of soil to trackballast would reduce the friction between the individual ballast stones and make it easier for the track to shift out of place...
gravel trackballast that supports the ties in rail tracks. They are often used in conjunction with ballast tampers when maintaining track. Ballast regulators...
ballast tamper, informally simply a tamper, is a self-propelled, rail-mounted machine used to pack (or tamp) the trackballast under railway tracks to...
A ballast cleaner (also known as an undercutter, a shoulder ballast cleaning machine) is a machine that specialises in cleaning the railway track ballast...
used to transport loose bulk commodities such as coal, ore, grain, and trackballast. Two main types of hopper car exist: covered hopper cars, which are...
support for the rails in railroad tracks. Usually laid perpendicular to the rails, ties transfer loads to the trackballast and subgrade, hold the rails upright...
about 2 miles SW of Okehampton. It was developed from 1897 to supply trackballast and other stone products for the London and South Western Railway (LSWR)...
ballastless track or slab track is a type of railway track infrastructure in which the traditional elastic combination of ties/sleepers and ballast is replaced...
under British and French rule, when bricks from the ruins were used as trackballast in the construction of the Lahore–Multan Railway [citation needed]....
Tamper, to interfere with, falsify, or sabotage Ballast tamper, a machine that tamps railroad trackballast Tampere The Tamperer featuring Maya Tampering...
reusable ballast will be put back to the new track together with the new ballast materials. For track renewal trains that do not include track copying...
stoneblower is a railway track maintenance machine that automatically lifts and packs the sleepers with small grade ballast, which is blown under the...
shovels or ballast forks to move trackballast, large clamps called "rail dogs" to carry rails, and ballast tamper bars or picks to adjust the ballast. The...
unloaded from horse-drawn or mule-drawn wagons and then placed on the trackballast and leveled to get ready for the rails. Rails, which weighed the most...
on fire. Protesters occupied the train tracks, disrupting train travel, and hurled stones from the trackballast at police. A large crowd of 60,000 turned...
of the trackballast and its shoulders; the type and placement of the sleepers; places of increased shadow such as tunnels and bridges; track consolidation;...
including tracks, ballast, grade, and lineside infrastructure such as signals and signs. Railroad tracks consist of multiple key components: a track bed, and...
include longitudinal beam track. Ladder type track has also been used historically on bridges lacking ballast, and in situations requiring good drainage...
transportation of bulk goods. These can be solid substances such as: Trackballast or gravel Iron ore from mines to ports or steel mills Coal from mines...
game in the same family as Newmarket Pink Lady (quartzite), railroad trackballast The Pink Lady (aircraft), a B-17G Flying Fortress bomber Ella's Pink...
individual stones' angular faces for its strength. As riprap As railroad trackballast As filter stone. As composite material (with a binder) in concrete,...
effect of grass, poppies, fireweed, trackballast and other scenic ground cover. Scatter used to simulate trackballast is usually fine-grained ground granite...
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