{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/99415"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/99415","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Under ballast mats for railway infrastructure–a North American approach to component characterization","abstract":"Railroads continually look for ways to extend the life of their track infrastructure and its components given poor track performance can lead to reduced transportation efficiencies. As such, under ballast mat (UBM) applications have seen growth in the North American (N.A.) freight railroad transportation market. However, current standard procedures quantifying the UBM’s properties and performance are provided solely by the German DIN 45673 standard tailored to European Mainline freight and passenger service. This lack of domestic testing procedures tailored to N.A. heavy haul freight lines provides challenges in implementing representative procedures to test materials where the UBMs will be exposed to higher axle loads. To understand how changes to the current procedures may affect the performance of UBM components, laboratory experiments were developed and conducted. Loading magnitudes, loading procedures, support conditions and testing setups were varied during multiple experiments. Additionally, an assessment of the capability of UBMs to increase the allowed track structure deflection under loading (i.e. reduce track stiffness) was also conducted. Results steaming from this work are ultimately intended to provide support to the development of representative characterization procedures and recommended practices for UBMs intended for use in the N.A. market.","abstract_html":"Railroads continually look for ways to extend the life of their track infrastructure and its components given poor track performance can lead to reduced transportation efficiencies. As such, under ballast mat (UBM) applications have seen growth in the North American (N.A.) freight railroad transportation market. However, current standard procedures quantifying the UBM’s properties and performance are provided solely by the German DIN 45673 standard tailored to European Mainline freight and passenger service. This lack of domestic testing procedures tailored to N.A. heavy haul freight lines provides challenges in implementing representative procedures to test materials where the UBMs will be exposed to higher axle loads. To understand how changes to the current procedures may affect the performance of UBM components, laboratory experiments were developed and conducted. Loading magnitudes, loading procedures, support conditions and testing setups were varied during multiple experiments. Additionally, an assessment of the capability of UBMs to increase the allowed track structure deflection under loading (i.e. reduce track stiffness) was also conducted. Results steaming from this work are ultimately intended to provide support to the development of representative characterization procedures and recommended practices for UBMs intended for use in the N.A. market.","abstract_has_math":false,"creators":["de Oliveira Lima, Arthur"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Civil Engineering","degree_department":null,"school":null,"contributors":["Edwards, John Riley","Tutumluer, Erol","Dersch, Marcus Scott"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018-03-13T15:49:13Z","date_published":"2018-03-13T15:49:13Z","updated_at":"2026-07-22T22:24:37Z","subjects":["Railway infrastructure","Under ballast mats"],"languages":["en"],"rights":["Copyright 2017 Arthur de Oliveira Lima"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/99415","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Edwards, John Riley","Tutumluer, Erol","Dersch, Marcus Scott"]},{"key":"dc:creator","label":"Author","values":["de Oliveira Lima, Arthur"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2018-03-13T15:49:13Z","2020-04-04T09:15:11Z","2017-12-13","2017-12"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Civil Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Railway infrastructure","Under ballast mats"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2017 Arthur de Oliveira Lima"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/99415"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Railroads continually look for ways to extend the life of their track infrastructure and its components given poor track performance can lead to reduced transportation efficiencies. As such, under ballast mat (UBM) applications have seen growth in the North American (N.A.) freight railroad transportation market. However, current standard procedures quantifying the UBM’s properties and performance are provided solely by the German DIN 45673 standard tailored to European Mainline freight and passenger service. This lack of domestic testing procedures tailored to N.A. heavy haul freight lines provides challenges in implementing representative procedures to test materials where the UBMs will be exposed to higher axle loads. To understand how changes to the current procedures may affect the performance of UBM components, laboratory experiments were developed and conducted. Loading magnitudes, loading procedures, support conditions and testing setups were varied during multiple experiments. Additionally, an assessment of the capability of UBMs to increase the allowed track structure deflection under loading (i.e. reduce track stiffness) was also conducted. Results steaming from this work are ultimately intended to provide support to the development of representative characterization procedures and recommended practices for UBMs intended for use in the N.A. market.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-03-13 without embargo terms","The student, Arthur de Oliveira Lima, accepted the attached license on 2017-12-11 at 14:35.","The student, Arthur de Oliveira Lima, submitted this Thesis for approval on 2017-12-12 at 12:17.","This Thesis was approved for publication on 2017-12-13 at 14:30.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11939 on 2018-03-13 at 10:12:11","Made available in DSpace on 2018-03-13T15:49:13Z (GMT). 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As such, under ballast mat (UBM) applications have seen growth in the North American (N.A.) freight railroad transportation market. However, current standard procedures quantifying the UBM’s properties and performance are provided solely by the German DIN 45673 standard tailored to European Mainline freight and passenger service. This lack of domestic testing procedures tailored to N.A. heavy haul freight lines provides challenges in implementing representative procedures to test materials where the UBMs will be exposed to higher axle loads. To understand how changes to the current procedures may affect the performance of UBM components, laboratory experiments were developed and conducted. Loading magnitudes, loading procedures, support conditions and testing setups were varied during multiple experiments. Additionally, an assessment of the capability of UBMs to increase the allowed track structure deflection under loading (i.e. reduce track stiffness) was also conducted. Results steaming from this work are ultimately intended to provide support to the development of representative characterization procedures and recommended practices for UBMs intended for use in the N.A. market.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-03-13 without embargo terms","The student, Arthur de Oliveira Lima, accepted the attached license on 2017-12-11 at 14:35.","The student, Arthur de Oliveira Lima, submitted this Thesis for approval on 2017-12-12 at 12:17.","This Thesis was approved for publication on 2017-12-13 at 14:30.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11939 on 2018-03-13 at 10:12:11","Made available in DSpace on 2018-03-13T15:49:13Z (GMT). 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