overhead epoxy application
overhead epoxy application
(OP)
is it practical in the field to use epoxy adhisive for doweling rebars out of the soffit of a concrete beam or a slab?
how efficient it is?
and is there a reduction factor that need to be applied to the pull out capacity of the rebar?
again, is it a common practice in the field and does the performance of the epoxy get compromised by overhead application?
thank you
how efficient it is?
and is there a reduction factor that need to be applied to the pull out capacity of the rebar?
again, is it a common practice in the field and does the performance of the epoxy get compromised by overhead application?
thank you






RE: overhead epoxy application
RE: overhead epoxy application
Contact Hilti North America for advise or other options at 1-800-363-4459, or hilti.com.
I wouldn't recommend using expandable anchors on the soffit of a slab/beam. As the slab deflects, local cracks in the concrete around the anchor may widen and reduce the strength of the bolt. (undercut bolts do not have this problem)
RE: overhead epoxy application
Even though you may not be able to see the cracks it must be assumed that they are there due to the strains induced under bending of the section.
Each type of bolt will have its own reduction factor listed in the manufacturer's specification data. Ths reduction tends to be around 40% on the bolt's tensile safe load capacity.
As for epoxy fixings, not a problem provided you use a suitable resin with a fairly quick initial set time to prevent gravity causing the epoxy to drip out of the hole.
Regards
Andy Machon
RE: overhead epoxy application