Ron,
Thanks for your response, The only issue that I have with taking the testing from the back of the mixer is that it does not completely represent the concrete that is being placed in the columns. We may see changes in entrained air content from truck to placement going from 7% at the truck...
The question has come up about where to take the samples for compressive testing when casting reinforced concrete columns. These columns are tall and require a hose approximately 20 ft. long to be snaked through the steel reinforcement in order to place the concrete. The obvious answer is to...
