New methods of subgrade stabilization are devised which take into consideration traffic loading, moisture within ballast and subgrade, and physical and physicochemical properties of subgrade soil; study included laboratory experiments on chemically stabilized specimens; durability tests on various synthetic resin films laid with sand beneath ballast and repeatedly loaded with mechanical vibrator mounted on full-size model track, and application of stabilization methods to actual tracks for prevention of mud pumping and various field investigations; methods tried on soft subgrades of Japanese National Railroads.
How to relieve soft subgrade
Tokyo Ry Tech Research Inst -- Quarterly Report
Tokyo. Railway Technical Research Institute -- Quarterly Report ; 6 , n 2 ; p 35-40
1965
6 pages
Aufsatz (Zeitschrift)
Englisch
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