Evaluation of maintenance procedures for bridge spalling on parapet walls : final report.
-
2017-03-01
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:Deterioration of parapet walls is a concern to the Ohio Department of Transportation. Spalling of the parapets
presents a danger as pieces of deteriorated concrete may fall onto the road below. The current repair method
is to chip off the deteriorated concrete, however, this process may damage the sound concrete and leaves an
unprotected surface. This project used a literature search to explore methods of concrete removal and
protecting/sealing the remaining surface. It was determined that hydrodemolition was the most promising
method of concrete removal as it does not damage the remaining concrete. This is most efficiently done with a
robot and a robot was found that may work on vertical surfaces of the parapets. Literature and research on
protectants/sealants shows a number of possible solutions, but there is no long term data on performance. One
protectant, polyurea, appears promising. This material may not only seal the concrete but may provide a
reinforcing barrier that might retain loose pieces of concrete.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type: