Post-drilling for electrical fixtures and utilities effect on tunnel lining segments
Post-drilling for electrical fixtures and utilities effect on tunnel lining segments
(OP)
Greetings,
I've a question regarding the post-drilling and post-installation of anchorage / fixtures for utilities in TBM tunnels.
Does post-drilling for installing anchors in tunnel lining segments affects durability of the precast segments? as they reduce the concrete cover while drilling they may lessen the protection against corrosion and fire for steel reinforcement.
I've been searching the web for a week now with no results regarding this matter.
Thanks in advance.
I've a question regarding the post-drilling and post-installation of anchorage / fixtures for utilities in TBM tunnels.
Does post-drilling for installing anchors in tunnel lining segments affects durability of the precast segments? as they reduce the concrete cover while drilling they may lessen the protection against corrosion and fire for steel reinforcement.
I've been searching the web for a week now with no results regarding this matter.
Thanks in advance.






RE: Post-drilling for electrical fixtures and utilities effect on tunnel lining segments
http://tunnelingonline.com/
RE: Post-drilling for electrical fixtures and utilities effect on tunnel lining segments
RE: Post-drilling for electrical fixtures and utilities effect on tunnel lining segments
RE: Post-drilling for electrical fixtures and utilities effect on tunnel lining segments
RE: Post-drilling for electrical fixtures and utilities effect on tunnel lining segments
I've been searching lately (for almost two weeks) for any reference that describes how drilling in concrete affects durability of the tunnel lining without any luck. If you've got any reference (book, paper, article anything) please let me know.