I have an old 8" wide concrete bulkhead I had 2-1/2" holes core drilled into. This was to install 1-3/4" galvanized pipe for fence post onto the bulkhead. I need to find a good expoxy/anchoring compound to set the post into. The holes are 8" deep into the concrete.
I rebuilt part of the bulkhead last year. During the new pour I was instructed to install 2-1/2 PVC pipe sections (ends duct taped) into the wet concrete to later set galvanized post into. I purchased a quick-set anchoring compound that came in one gallon buckets and preceded. Several days later I noticed the bulkhead was cracked at every post location. Apparently the compound expanded.
Is thier a product more suited to this, or atleast one that is non-expanding?
I have had no luck trying to read labels or doing a search.
Are you saying that you "left" the PVC in the holes, then installed anchors and epoxy into the PVC? ...or.... are you saying the you used the PVC to temporarily create holes in the concrete, which was then removed, so as to create holes for your anchors?
It almost sounds like you installed into the PVC?
(If that is what you did, the PVC might have reacted with the epoxy and the PVC expanded)
Here is some flexible epoxy sealant, made to be used in contact with concrete:
I did leave the PVC pipe sections in the concrete. I do not recall being told to remove them and did not even try.
I would be interested in finding out how "solid" the crack sealer sets up. With the leverage of a 5ft. fence being anchored into a 8in. deep hole, I would not want the post to move and upset the cedar fencing.
The post that I am installing into the wall are 4x4 cedar with a galvanized pipe section installed into the end.