A unique judicial opportunity allowed measurement of the response of three cracks in residential structure to blasting for underground aggregate mining. Instrumented cracks were located in the interior basement CMU mortar and upstairs dry wall as well as exterior brick work. The dynamic environment was unusual. Even though the blasting occurred some 490 m (1600 ft) away, excitation frequencies were unusually high and there were no apparent surface waves. In addition there was no air overpressure wave to produce secondary crack response. As is typical, long term environmental effects produced greater crack response than did the blast induced ground motions.

Last modified

• 08/14/2017

Creator

• Mike Waldron
• G.F. Revey
• C.H. Dowding

DOI

• https://doi.org/10.21985/N26194

Publisher

• Northwestern University Libraries

Language

• English

Keyword

• Structural health monitoring
• Cracking of concrete

Date created

• 2007

Related url

•  http://iti.northwestern.edu/publications/dowding/acm/Dowding_et_al-2007-Ground_Motions_From_and_House_Response_to_Underground_Aggregate_Mining.pdf

Resource type

• Research Paper

License

• All rights reserved