Geogrid has been defined as a deformed or nondeformed net-like polymetric material used with foundation, soil, rock, earth, or any other geotechnical engineering-related materials as an integral part of a human-made project, structure, or system. Geogrids are one of the geosynthetics that have seen increased use in railroad applications. In conjunction with design of railroad track at several military installations the question was raised as to the benefit of including a geogrid in the ballast to act as a reinforcement mechanism. The use of geogrids in railroad track applications was investigated to determine if the ballast thickness can be reduced using geogrids. Investigation was made of the advantages and disadvantages of using geogrids along with the possibility of reducing the ballast thickness through the use of a geogrid. All available technical literature applicable to the use of geogrids in railroad track was reviewed. A number of telephone calls and personal contacts were made with people in academia and in the geosynthetics and railroad industries who have been involved with the development, testing, and use of these materials in railroad track. A synopsis of the information that is currently available in relation to the use of geogrids in railroad track reinforcement is presented along with recommendations for the use of geogrids on low traffic density, low speed railroad tracks typical of those found on military installations. (edc)
Use of Geogrids in Railroad Track: A Literature Review and Synopsis
1990
38 pages
Report
No indication
English
Railroad Transportation , Construction Equipment, Materials, & Supplies , Railroad tracks , Reinforcing materials , Ballast , Literature surveys , Low density , Low velocity , Military facilities , Nets , Polymers , Reinforcement(Structures) , Synthetic materials , Thickness , Ground traffic , Geogrids , Geotechnical fabrics , Geosynthetics
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