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Geotechnical Properties of Modified Railway Sidings Coal Discard
Coal spillage often occurs in railway sidings which are used for the loading and offloading of coals in mining towns. Spilled coal materials are readily exposed to the weather elements and gradually intermixed with soils in the vicinity of the sidings to form coal–soil composite layers. The layer often softens significantly in poor drainage and is also a major source of acid water drainage. Coal–soil composites of 1:1 to 5:1 coal-to-sand ratios were prepared and cured. Another batch of composites was stabilized with 8% cement, compacted and cured. Test results reveal that dry unconfined compression strength and modulus of cured composite were only marginally lower than cement-stabilized composite but were fourfold lower in soaked state. The unconfined compressive strength (UCS) and stiffness of coal–soil composite tend to the cement-stabilized values as coal–soil ratio tends to 5:1. The average coefficient of permeability decreased with cement stabilization. Coal–soil composite backfill and cement-modified composites require proper drainage facilities to provide acceptable pavement service in coal sidings and prevent acid drainage.
Geotechnical Properties of Modified Railway Sidings Coal Discard
Coal spillage often occurs in railway sidings which are used for the loading and offloading of coals in mining towns. Spilled coal materials are readily exposed to the weather elements and gradually intermixed with soils in the vicinity of the sidings to form coal–soil composite layers. The layer often softens significantly in poor drainage and is also a major source of acid water drainage. Coal–soil composites of 1:1 to 5:1 coal-to-sand ratios were prepared and cured. Another batch of composites was stabilized with 8% cement, compacted and cured. Test results reveal that dry unconfined compression strength and modulus of cured composite were only marginally lower than cement-stabilized composite but were fourfold lower in soaked state. The unconfined compressive strength (UCS) and stiffness of coal–soil composite tend to the cement-stabilized values as coal–soil ratio tends to 5:1. The average coefficient of permeability decreased with cement stabilization. Coal–soil composite backfill and cement-modified composites require proper drainage facilities to provide acceptable pavement service in coal sidings and prevent acid drainage.
Geotechnical Properties of Modified Railway Sidings Coal Discard
Lecture Notes in Civil Engineering
Tutumluer, Erol (editor) / Nazarian, Soheil (editor) / Al-Qadi, Imad (editor) / Qamhia, Issam I.A. (editor) / Okonta, Felix (author) / Rottcha, Carl Hien (author)
2021-08-31
9 pages
Article/Chapter (Book)
Electronic Resource
English
Geotechnical Properties of Modified Railway Sidings Coal Discard
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