کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
295784 511576 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Scattering analysis of ground-penetrating radar data to quantify railroad ballast contamination
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Scattering analysis of ground-penetrating radar data to quantify railroad ballast contamination
چکیده انگلیسی

This paper will evaluate ground-penetrating radar (GPR) as a non-destructive method to rapidly, effectively, and continually assess the conditions of railroad ballast. Compared to uniformly graded, clean ballast, fouled ballast has a finer, well-graded particle size with fewer air voids. Ballast under different conditions generates various GPR electromagnetic scattering patterns. A field GPR survey with multiple sets of 1 and 2 GHz air-horn antennae was conducted in summer 2005 at the Transportation Technology Center, Inc. (TTCI) in Pueblo, Colorado. The 2 GHz antenna was found to be more sensitive to the change in scattering pattern. Appropriate data processing was used to remove the effects of the rails to obtain clear GPR images of the subsurface layers. From the image analysis, ballast thickness, ballast fouling condition, and trapped water can be assessed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NDT & E International - Volume 41, Issue 6, September 2008, Pages 441–447
نویسندگان
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