I have a question about some concrete breaks that we are getting on our site. We need to have a psi of 5000. Some are making this by 14 day breaks and some aren't. There is fly ash in the mix and I'm wondering how much gain I can see, if any due to the fly ash at a later date (28 day breaks)? There is about 143 lbs of fly ash per cy and about 469 lbs of cement. Not sure what other info is needed but I can supply more info.
Thanks
Thanks