Concrete Cover at Reinforcing Couplers
Concrete Cover at Reinforcing Couplers
(OP)
How do you deal with concrete cover at couplers.
For instance, if you have 2" of clear cover to a bar and place a coupler on it, all of a sudden you only have 1-1/2" clear cover.
My specific circumstance is a connection to existing reinforcing where 10" of reinforcing was left sticking out of the existing construction for future use. It happens to be in a waste water treatment plant, so I'm more worried about corrosion than development length.
I also have to provide a similar detail for the next guy who comes around to add further future construction.
I think my options are. 1) Coat the coupler and the reinforcing around it with something like Sika Armatec 110 Epocem which is a corrosion inhibitor (anyone have any experience with Armatec? Any alternative products?), 2) coat the surface of the wall with a waterproofer (subject to maintenance, yuck), 3) provide 3" of clear cover for the next guy so he doesn't have an issue (seems inefficent).
I'm interested to hear your thoughts.
For instance, if you have 2" of clear cover to a bar and place a coupler on it, all of a sudden you only have 1-1/2" clear cover.
My specific circumstance is a connection to existing reinforcing where 10" of reinforcing was left sticking out of the existing construction for future use. It happens to be in a waste water treatment plant, so I'm more worried about corrosion than development length.
I also have to provide a similar detail for the next guy who comes around to add further future construction.
I think my options are. 1) Coat the coupler and the reinforcing around it with something like Sika Armatec 110 Epocem which is a corrosion inhibitor (anyone have any experience with Armatec? Any alternative products?), 2) coat the surface of the wall with a waterproofer (subject to maintenance, yuck), 3) provide 3" of clear cover for the next guy so he doesn't have an issue (seems inefficent).
I'm interested to hear your thoughts.






RE: Concrete Cover at Reinforcing Couplers
RE: Concrete Cover at Reinforcing Couplers
JAE, Have you ever used Armatec 110 or a similar product?
RE: Concrete Cover at Reinforcing Couplers
The couplers that I have used in the past were justified on the basis of:
1. The coupler is made of a material with lower corrossion potential than reinforcing steel.
2. The area of the coupler exposed to more heat under fire is negligible compared to the overall volume of the bars that it is attached to.
I am sure these were based on tests e.t.c. that the manufacturer had done (it was a while ago), so the manufacturer of your couplers may have similar information.
csd
RE: Concrete Cover at Reinforcing Couplers
RE: Concrete Cover at Reinforcing Couplers
csd
RE: Concrete Cover at Reinforcing Couplers
RE: Concrete Cover at Reinforcing Couplers
Do a search for the word coupler...and review reports. htt
Open any of the pdf files and do a search for the word cover.
RE: Concrete Cover at Reinforcing Couplers
We use Sika Armatec-110 quite frequently as bonding agent during concrete repair work. Once or twice we have used this product as corrosion inhibitor as well, when the rebars in concrete members were left exposed to weather over a long period of time. In this case just before we do the final repair, we apply the armatec once again, because if the epocem dries it can be a bond breaker between concrete and steel.
RE: Concrete Cover at Reinforcing Couplers