1979•Railway track and structuresRequires access
MATCHING M/W PRACTICE TO REQUIRED USE OF TRACK--PART II: TIES AND BALLAST
R E Ahlf
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Abstract
The track structure from subballast through ballast to the ties is discussed. Ballast materials, cleaning and detrimental effects of mud pumping are discussed. Track stiffness is affected by ballast depth and fouling, as well as by subgrade conditions. At the end is a handy table of recommendations for handling subgrade, ballast and ties.