Wireless long-term monitoring of asphalt layer on a motorway bridge and comparative testing of displacement

S. A. Bachmaier, A. Gordt, S. Jungmann, M. Krüger

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


Monitoring of civil structures is a growing application in nondestructive testing. Wireless systems supersede wired systems mainly by being easily deployable under various local structural conditions. The vast majority of today's existing structures are not equipped with monitoring systems by design. Wireless systems can still be installed as a retro fit. In the demonstration project described here, a 1350 m long motorway bridge over the Neckar River near Heilbronn, Baden-Württemberg, Germany was equipped with ambient and material temperature sensors as well as humidity sensors. The test setup is described in detail and interpretation of the data from initial measurements is provided. Furthermore, an assessment of the wireless monitoring system is presented, giving information about the packet drop rate, radio frequency calculations and wide-area network connectivity.

Original languageEnglish
Title of host publicationNondestructive Testing of Materials and Structures
Subtitle of host publicationProceedings of NDTMS-2011, Istanbul, Turkey,May 15-18, 2011
Number of pages6
Publication statusPublished - 1 Dec 2012
Externally publishedYes

Publication series

NameRILEM Bookseries
ISSN (Print)2211-0844
ISSN (Electronic)2211-0852


  • Asphalt layer
  • Distortion
  • Laser displacement measurements
  • Temperature monitoring
  • Wireless sensor network

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials

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