ELIMINATION OF HEAVING WITH FOAM PLASTIC PROTECTION

LIKVIDATSIIA PUCHIN TEPLOIZOLIRUIUSCHCHEI ZASHCHITOI IZ PENOPLASTOV

A significant portion of our national railroads are in regions with bleak climates and permafrost. The construction of the roadbed here has a series of peculiarities, one of which is the prevention of frost reception in the soils and the formation of heavings. In winter freezing it is usual in depressions and on level spots that more or less equivalent heaving of the track occurs for great stretches, which practically does not cause inadmissible alteration of the profile. In separate places, on the strength of some or another local reasons an equivalent heaving is destroyed and its local alteration appears in the form of protruberances, indentations, or drops in pressure, generally called heavings. The observations of heavings on USSR railroads revealed that in approximately 40% of cases there are protruberances, in 57% indentations, and in 3% drops in pressure. Drying of the soil for the prevention of heaving turns out to be completely effective only when the drainages (including gutters) intercept the water of the permeable water-bearing layer which feeds the heaving soils: therefore it has a limited application.

• Supplemental Notes:
  • Full translation available for reference. Contact Technology Planning Officer, Office of Research and Development, Federal Railroad Administration, U.S. DOT.
• Corporate Authors:

  Ministerstvo Putei Soobshcheniya SSSR

  Novoryazanskaya ul., Dom 12
  Moscow 288,   USSR 
• Authors:
  • Shakhuniants, G M
• Publication Date: 1973

Language

• Russian

Media Info

• Features: Figures; Tables;
• Pagination: p. 18-20
• Serial:
  • Put' i Putevoye Khozyaistvo
  • Issue Number: 10
  • Publisher: Ministerstvo Putei Soobshcheniya SSSR

Subject/Index Terms

• TRT Terms: Drainage; Freezing; Frost heaving; Frost protection; Low temperature; Pavement subgrade; Permafrost; Plastic foams; Railroad tracks; Railroad transportation; Soil water; Soils; Water table
• Uncontrolled Terms: Heaving
• Old TRIS Terms: Soil freezing; Track profile
• Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology; Railroads;

Filing Info

• Accession Number: 00130259
• Record Type: Publication
• Source Agency: Federal Railroad Administration
• Report/Paper Numbers: No. 12
• Files: TRIS, USDOT
• Created Date: Nov 23 1977 12:00AM