One-to-one comparison between radar results and reality on a concrete bridge

Johannes Hugenschmidt

doi:10.1117/12.462219

12 April 2002 One-to-one comparison between radar results and reality on a concrete bridge

Johannes Hugenschmidt

Proceedings Volume 4758, Ninth International Conference on Ground Penetrating Radar; (2002) https://doi.org/10.1117/12.462219
Event: Ninth International Conference on Ground Penetrating Radar (GPR2002), 2002, Santa Barbara, CA, United States

Abstract

The inspection ofbridge decks is today a routine application of the GPR method. Pavement thickness, depth of re-bar, concrete damage and the position of tendons are some of the issues that are addressed with GPR. However, in most cases a verification of radar results is either not possible, restricted to laboratory specimens or to a few points on real objects. A detailed comparison between radar results and reality for bridge decks is not only of scientific interest but could also improve the acceptance of GPR in this field of work. In a research project, bridges designated for demolition are inspected with EMPA's mobile GPR unit. Radar results are reported before the bridge is taken down. After demolition radar results are verified through a comparison with actual bridge parts. Work on the first in a series of 6 bridges has been completed recently. The radar inspection was carried out along 2 lines over the whole length of the bridge. During demolition, the bridge was sawed along the lines where the radar inspection had been carried out and the parts were stored in a landfill. This enabled a one-to-one comparison between radar results and reality.

Citation Download Citation

Johannes Hugenschmidt "One-to-one comparison between radar results and reality on a concrete bridge", Proc. SPIE 4758, Ninth International Conference on Ground Penetrating Radar, (12 April 2002); https://doi.org/10.1117/12.462219

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available