Combination of NDT techniques for site investigation of non-ballasted railway tracks

被引:37
作者
Colla, C
Krause, M
Maierhofer, C
Höhberger, HJ
Sommer, H
机构
[1] BAM, Fed Inst Mat Res & Testing, Div 4 4, D-12205 Berlin, Germany
[2] Deutsch Bahn AG, Res & Technol Ctr, D-80939 Munich, Germany
关键词
concrete; NDT; impact echo; ultrasonics; radar; railway;
D O I
10.1016/S0963-8695(01)00033-0
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Today's civil engineering NDT needs are for quantitative, fast to apply and easy to interpret methods. They are required on site both for evaluation of existing structures/infrastructure and for quality control in new construction. With this purpose, BAM has carried out in-situ feasibility studies, using radar, impact-echo and ultrasonic-echo methods, Two examples are given of their combined application on different railway slab-track constructions, using high frequency radar, scanning impact-echo and ultrasonic array methods. The aim was to evaluate limitations and advantages, comparability and complementarity of these methods. The on-site measurements demonstrated the possibility to investigate, with good accuracy via NDT, the bonding conditions between sleepers and slab, to locate voids and measure layer thickness. The acoustic and electromagnetic methods used, were found to be complementary. (C) 2002 Elsevier Science Ltd. All tights reserved.
引用
收藏
页码:95 / 105
页数:11
相关论文
共 4 条
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