How strong are concrete anchors? Polyester vs Vinylester Vs Epoxy

[@josephmerz2666]

thankyou .great demonstration . great information .

[@MrHassancehef]

great video! Thanks for the work mate!, here some counter argument for vinylester user (as me :) ): result are not always as such, sometimes vinylester offer stronger result than epoxy, and most of the time close results! Result depends of the type of media you bound together, a glue that give best result on sandstone, with deeply grooved tensor, will maybe not give the same results with granite and threated bar! Vinylester is based out of polyester, but with extra chemicals wich lead it to transform to something close to epoxy. Some people use epoxy acrylate, this is the other name of vinylester! In my opinion, vinylester is an hybrid (also one of his other name) wich combine best of both worlds, epoxy and polyester, but is way closer to epoxy. Sikadur 31 (of one of the strongest epoxy), really look alike to the vinylester I use (so not a glass feeling, as your red epoxy). Important point vinylester is less sensible to bad mixing! And as it's way cheaper and widely available, you will care much less about wasting it if you have an already open cartridge... Vinylester is recommended by some manufacturer, for example, petzl colinox has to be use with a vinylester (spit viper xtrem).

[@BoltahDownunder]

Cheers mate! That's interesting about petzl. Aside from strength it could also be the main weakness of epoxy is they may not harden fully in cold. Perhaps they're worried about that in Europe. It may be a procedural issue rather than an engineering issue. And that's why i only use epoxy here, cos it's hot and the others harden too damn fast! Oddly enough DeWalt makes this Ac100 vinylester, and now also have another glue they call epoxy acrylate. Haven't looked into it but I assume that's a true hybrid. And then hybrids are a whole other story! Vinylester with toughener, epoxy with low temperature additives, could be anything. I don't think I'll go much deeper into that on this channel however

[@MrHassancehef]

@@BoltahDownunderthanks for the answer, did you have an example of an hybrid wich is not vinylester based?

[@BoltahDownunder]

Not yet tested, but I have used a hybrid epoxy that was from either Sika or Fischer. Had the highest compressive strength I'd ever seen, but I can remember what it was unfortunately. There are so many hybrids I can't cover them all. But I have tested a few V's & E's and they perform similarly to these. That stuff will go on my climbing channel though

[@climbingtaiwan]

Awesome demonstrations! Thanks for compiling all that great information.

[@matthewpaton3925]

Amazing video mate! great demonstration. Makes you second think just getting the cheapest one Bunnings have. Cheers.

[@toolscientist]

Great testing! Can you try it again but with threading the holes with concrete screws. Might make the vinyl ester compete with the epoxy.

[@BoltahDownunder]

Can do, and I reckon it probably will, but that's more of a mountain mullet kinda video

[@toolscientist]

@@BoltahDownunder haha, I thought this was MM.

[@BoltahDownunder]

Surprise! It originally was but then it's evolved into one high-level vid here and probably 5 more for the mullet

[@Vertikal1000]

Great video. Any idea on expected lifespan for the different products? Are epoxy supposed to last longer?

[@BoltahDownunder]

I'm general yes, epoxies last the longest. But the more expensive glues of different types will state a 50 year design life, and now some even state 100 years! They estimate that in lab with low-speed loading to test for creep, and & also high temperature and alkalinity conditions.