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旧 2009-09-15, 01:39 PM   #1
huangyhg
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默认 post tension anchors

post tension anchors
i have a post tensioned (unbonded 7 wire strand) garage slab. some pt anchors have been exposed in areas of concrete repair (i.e. at construction joints and at slab edges). all rebar in each concrete patch is getting coated with zinc paint. i heard from a contractor years ago that pt anchors should never be painted with zinc paint, and suggested rustoleum instead. has anyone heard of this or know a reason why the exposed anchor head should not be zinc painted?
thanks

it's a new one... you might want to try the metal and metalurgy forum, i haven't done it, but coating the anchorage with zinc rich paint shouldn't harm anything... and the zinc rich paint should be sacrificial...
dik
there is one reazon why the pt anchors should not be painted.
this will simply prevent you from been able to inspect them later.
the problem may be just under the paint, well hiden from the eye
in the bridges buisnes where i am we never paint the anchors.
we seel them with caps filled with greese and then cover the caps.
after all if you want to do something later you break the cover remove the cap and do wathever you like.
(to get it right assume you are wrong)
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