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Epoxy rebar vs the normal rebar
- Thread starter ive
- Start date
ConCretin
Well-known member
I don't know where you are getting your pricing but epoxy coated rebar is typically significantly more expensive than plain. It is used in corrosive environments such as bridge decks but generally isn't necessary for residential applications.
Its also used for applications near the ocean where salt water corrosion is a issue. Yes it is significantly more expensive. If you can get it cheaper then there might be an issue with the manufacturing, possibly the coating is damaged so they can't use it as a specified product so they are just unloading them?
tncatadjuster
Well-known member
There are new thoughts about it due to failures. Search should result in info. I doubt it is need in any residential setting unless on coast.
Epoxy coated rebar is now thought to NOT be desirable.
Original though was that the epoxy coating would protect the rebar from corrosion from road deicing salts.
Real world results have been showing that the corrosion reduction of the epoxy coated rebar was often only marginally better than plain rebar, because of the coating not being 100% intact after placement. Due to manufacturing pinholes, no coating at all on cut/sheared ends, or coating damage during transport, handling, and placement.
Some documented cases of ECR having to already be replaced/repaired in ~25 years of original installation, when the design of the project was supposed to have a 50+ year lifespan before R&R (or Replacement) was required.
Quebec has 'banned' epoxy coated rebar from public transportation projects.
Florida DOT study showed bare steel corroded in 12-15 years in a 'marine environment', the ECR corroded in 7-9 years.
One info page is here:
https://www.tuf-bar.com/application/gfrp-vs-steel/gfrp-vs-ecr/
Maybe the Canadian OP is seeing lower pricing on ECR because suppliers can't sell it for use on any public works projects?
Stainless steel rebar is a 'thing'.
http://stainlesssteelrebar.org/why-stainless/
Original though was that the epoxy coating would protect the rebar from corrosion from road deicing salts.
Real world results have been showing that the corrosion reduction of the epoxy coated rebar was often only marginally better than plain rebar, because of the coating not being 100% intact after placement. Due to manufacturing pinholes, no coating at all on cut/sheared ends, or coating damage during transport, handling, and placement.
Some documented cases of ECR having to already be replaced/repaired in ~25 years of original installation, when the design of the project was supposed to have a 50+ year lifespan before R&R (or Replacement) was required.
Quebec has 'banned' epoxy coated rebar from public transportation projects.
Florida DOT study showed bare steel corroded in 12-15 years in a 'marine environment', the ECR corroded in 7-9 years.
One info page is here:
https://www.tuf-bar.com/application/gfrp-vs-steel/gfrp-vs-ecr/
Maybe the Canadian OP is seeing lower pricing on ECR because suppliers can't sell it for use on any public works projects?
Stainless steel rebar is a 'thing'.
http://stainlesssteelrebar.org/why-stainless/
ford33
Well-known member
Take a look at fiberglass reinforced polymer FRP rebar. It is light weight, very strong and doesn't rust. Menard's carries it and price is comparable to steel which is $5 for FRP vs. $5.30 for steel. Watch a couple of engineering design YouTube video's on the product. It has good and bad qualities compared to steel.
I am not saying you should use this product as your application needs are unknown to me. Just consider it as another input to your decision making.
I am not saying you should use this product as your application needs are unknown to me. Just consider it as another input to your decision making.