SANDY AND GRAVEL-SANDY BALLAST FOR RAILROAD TRACK-GOST 32-2-72. OFFICIAL PUBLICATION
PESCHANYI I GRAVIINO-PESCHANYI BALLAST DLIA ZHELEZNODOROZHNOGO PUTI GOST 32-2-72. IZDANIE OFITSIAL'NOE
The Standard deals with coarse natural sand, formed as result of natural disintegration of rock, and with sandy- gravel mixture, both being packed on railroad tracks as ballast. This type of ballast is used in accordance with actual standards and rules (SN and P), and the "Conclusions on conducting Planned-and-preventive maintenance of the upper structure, earthen roadbed, and artificial structures of railroad tracks of USSR." Table 1 presents the grain dimensions and their percentage contents suitable for using as ballast. The amount of gravel grains and pebble of soft rock cannot exceed 15% of the total mass. The percentage contents in the ballast of grains of various sizes: over 100 mm; from 100 to 60 mm; from 60 to 3 mm; from 3 to 1 mm; from 1 to 0.5 mm; from 0.5 to 0.1 mm, and less than 0.1 mm - are calculated from different formulae. The contents of clayey particles in sand should not exceed 2%, and is usually calculated by the areometric method. The coefficient of permeability of the ballast is found using the instrument KF-00, which is produced by the plant "Nefteavtomatika". Rules of acceptance and testing methods, as well as transportation and storage procedures are described.
- Abstract only is available in English, original untranslated as of December 1976.
USSR Ministry of RailwaysNovo-Basmannaya, Ulitsa 2
- Publication Date: 1972
- Features: Figures; Tables;
- Pagination: 10 p.
- TRT Terms: Aggregates; Ballast (Railroads); Gravel; Specifications; Tests
- Old TRIS Terms: Ballast specifications
- Subject Areas: Geotechnology; Railroads;
- Accession Number: 00144471
- Record Type: Publication
- Source Agency: Federal Railroad Administration
- Files: TRIS, USDOT
- Created Date: Feb 16 1977 12:00AM