ok to use quickcrete crack resistant on fence post?

[mound]

I have 3 fence posts to set and I have several bags of Quickcrete "crack resistant" concrete mix left over:

https://www.homedepot.com/p/Quikrete-80-.../100318448

Do any of you know if there's any reason not to use this for the fence posts? Can I dump it in the hole dry and add water or must it be pre-mixed?

[R Clark]

I don't know why you couldn't use it for that application.  I wouldn't buy it specifically for setting psots due to increased cost over regular "cheap" pre-mixed bags, but I'm also not a fan of concrete mix just sitting in the shed long term waiting for a "someday, something" use.

If it was me, I'd use it. But I think I would pre-mix it.

[Gary G™]

Yep; you already own it—mix it up and pour it down.

[Snipe Hunter]

I've used old bags of mortar, grout, concrete.. whatever sets.

[petertay15]

If you pour it in dry, the moisture in the ground is sufficient to harden and set the mortar or cement. But, it’s difficult to set a post when the bottom remains loose, since you can’t tamp down the powder. Of course you can’t tamp down wet cement either. A deep-set, well-tamped fence post will be as firm as one set in cement. I guess I’m thinking of soil with lots of clay. Sandy soil would benefit from the cement

[messmaker]

I've used old bags of mortar, grout, concrete.. whatever sets.

me too

[mound]

Thanks all. I used the stuff, pre-mixed it. worked fine. posts are set!