Print Email Facebook Twitter Assessment of ballast layer under multiple field conditions in China Title Assessment of ballast layer under multiple field conditions in China Author Guo, Y. (TU Delft Railway Engineering) Wang, Shilei (China Academy of Railway Sciences) Jing, Guoqing (Beijing Jiaotong University) Yang, Fei (China Academy of Railway Sciences) Liu, Guixian (China Academy of Railway Sciences) Qiang, Weile (China Academy of Railway Sciences) Wang, Yan (China Academy of Railway Sciences) Date 2022 Abstract Ballast layer condition should be more regularly and accurately inspected to ensure safe train operation; however, traditional inspection methods cannot sufficiently fulfil this task. This paper presents a method of ground penetrating radar (GPR) application to reflect ballast layer fouling levels under diverse field conditions (annual gross passing load, cleaning and renewal year, fouling composition and transportation type). The results show that the GPR-based inspection method can assess the ballast layer fouling level with a 1–7% difference from the traditional sieving results. Fouling composition (especially metal materials) has a great effect on the GPR signals, thus affecting the inspection accuracy of ballast layer fouling level. Developing diverse GPR-based fouling indicators (by distinguishing different GPR signal features) can improve the GPR inspection applicability to the diverse field conditions. Subject Ballast foulingGPRGround penetrating radarRailway ballastTrack geometryTrack inspection To reference this document use: http://resolver.tudelft.nl/uuid:1307dc99-0c01-4a43-b182-500ec9367435 DOI https://doi.org/10.1016/j.conbuildmat.2022.127740 Embargo date 2023-07-01 ISSN 0950-0618 Source Construction and Building Materials, 340 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 Y. Guo, Shilei Wang, Guoqing Jing, Fei Yang, Guixian Liu, Weile Qiang, Yan Wang Files PDF 1_s2.0_S0950061822014155_main.pdf 11.91 MB Close viewer /islandora/object/uuid:1307dc99-0c01-4a43-b182-500ec9367435/datastream/OBJ/view