Super crumbly, didn't work
So I bought a 10 lbs back of Quikrete portland cement mix to try out hypertufa. Um, yeah, it didn't work. Even though I followed the recipe on the Q&A page on here. I even added some rope fibers for further strength to the cement, peat, and perlite.
It developed cracks while drying and also is very loose and crumbly. It's not going to hold up at all.
? What could I have done wrong? Did I buy the wrong cement mix? I don't know of any other Quikrete portland cement pre-mixes that come in the 10 lbs bags.