A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Site evaluation/performance of separation geotextiles
In the transportation industry one of the major uses of geotexiles is a separator between fine grained subgrade soils, and the drainable base course materials in a pavement system. There is currently a study to evaluate the performance of geotextiles as separators under various foundations and environmental conditions. This paper will describe the site in New York, the geotextiles used, and the results of falling weight deflectometer testing which has been done in conjunction with the investigation. The test section has five different geotextile sections, plus a control section with no geotextile installed. The site has been in service since late 1997. Over the past four years we have had the opportunity to access the site for visual inspection as well as performing falling weight deflectometer testing. Visually the site shows no sign of distress since construction. Comparing the results year after year of a given section itself it appears that the subgrade resilient modulus of each of the respective sections is decreasing over time. This indicates that the subgrade is getting weaker over time as anticipated. In cases where there were upword trends in the data, it is felt that this could be explained by densification of the subgrade by trafficking, consolidation and/or moisture cycling.
Site evaluation/performance of separation geotextiles
In the transportation industry one of the major uses of geotexiles is a separator between fine grained subgrade soils, and the drainable base course materials in a pavement system. There is currently a study to evaluate the performance of geotextiles as separators under various foundations and environmental conditions. This paper will describe the site in New York, the geotextiles used, and the results of falling weight deflectometer testing which has been done in conjunction with the investigation. The test section has five different geotextile sections, plus a control section with no geotextile installed. The site has been in service since late 1997. Over the past four years we have had the opportunity to access the site for visual inspection as well as performing falling weight deflectometer testing. Visually the site shows no sign of distress since construction. Comparing the results year after year of a given section itself it appears that the subgrade resilient modulus of each of the respective sections is decreasing over time. This indicates that the subgrade is getting weaker over time as anticipated. In cases where there were upword trends in the data, it is felt that this could be explained by densification of the subgrade by trafficking, consolidation and/or moisture cycling.
Site evaluation/performance of separation geotextiles
Vor-Ort-Bewertung der Gebrauchstüchtigkeit von Trennschicht-Geotextilien
Suits, L.D. (author) / Koerner, G. (author)
2001
17 Seiten, 11 Bilder, 3 Tabellen, 5 Quellen
Conference paper
English
Site Evaluation/Performance of Separation Geotextiles
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