Hi Structural-eng,
Thanks for your input. I will need to check with any local vendor to see if air entrainment is available. Also may have to check with other third party to see if the answer is honest or the vendor is just being 'lazy' or difficult.
I am designing a concrete pad for some electrical equipment outside. It is exposed to weather. Under peer review for my foundation design, it was mentioned that my concrete specification should have an F2 exposure category. I live in Houston and typical concrete design, we don't specific any...