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How many compressive test samples are required for epoxy grouts to form a "valid test"? ASTM C579 is the standard to use for testing epoxy grout, but all it says it to create 6 samples. It's not clear to me if that means a minimum of 6 samples must all be tested at the same age to form a valid...

I came across this product in my research and I think it should do the job. http://kemper-system.com/US/eng/systems/kemperol-waterproofing/ Thank you for pointing me in the right direction. For some reason I forgot to read the commentary of the minimum clear cover section in ACI. That got me...

Yes, it's the top cover. Is there a waterproofing material that anyone is familiar with that might work for below-grade concrete protection?

ACI 318 section 7.7.1 specifies a minimum clear cover of 2 inches for concrete exposed to earth or weather for bar sizes 6 through 18.

I'm working on a project with a very large reinforced concrete footing. The minimum clear cover on top of the foundation was specified to be 2 inches, but in some areas of the foundation the contractor placed the concrete unevenly and only achieved as little as 1 inch of clear cover. The...