Tennessee · answered by Verika · verified against sources
What air content is required for concrete on Tennessee DOT projects?
"Design Class D , Class DS, and Class L concrete at 7% air content . Acceptance range for pumping and other methods of placement is 4.5 - 7.5%. Sampling will be at the truck chute." [2] "Class of Concrete Min 28 - Day Compressive Strength (psi) Min Cement Content (pound per cubic yard) Maximum Water/Cement Ratio (pound/pound) Air Content % (Design + production tolerance) Slump (inches) A 3,000 564 0.45 6 + 2 3 + 1" [2] "D, DS (2, 3) 4,000 620 0.40 7 (3) 8 max (4)" [2] "air entrained and produce a workable concrete mix meeting the design and production parameters specified in Table 501.03 - 1." [3]
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