Journal
GEOSYNTHETICS INTERNATIONAL
Volume 15, Issue 5, Pages 311-321Publisher
ICE PUBLISHING
DOI: 10.1680/gein.2008.15.5.311
Keywords
geosynthetics; reinforcement; railway track; alternative sub-ballast material
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Funding
- University of Brasilia
- Federal University of Ouro Preto
- CVRD-Vale do Rio Doce Mining Company
- CNPq-National Council for Scientific and Technological Development
- CAPES-Brazilian Ministry of Education
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Geosynthetics have been used as reinforcement in various applications in geotechnical engineering. This paper presents a study on the use of geosynthetic reinforcement to reduce the consumption of good-quality sub-ballast material in a railway track in the state of Minas Gerais, Brazil. Six test sections on the railway were instrumented and monitored for a period of 2 years. Nonwoven geotextile and a geogrid were used as reinforcement in different positions in the subballast. The results obtained showed that the presence of geosynthetic reinforcement reduced the strains mobilised in the sub- ballast, reduced the breakage of ballast element, and allowed the use of a cheaper alternative material in the sub-ballast construction. The results showed the potential of the use of alternative sub- ballast material reinforced with geosynthetic to reduce the costs of construction and maintenance of railway tracks.
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