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Concrete Air-Entrainment Admixture Dosage Calculator

Compute the total air-entraining admixture volume needed for a concrete batch from its dosage rate.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-27 · v1.1.0

Market
Imperial · sales tax

Admixture volume needed

0.04 gal

Check your inputs

The dosage rate you entered directly determines the result — always confirm it against your specific admixture's manufacturer data sheet, since rates vary widely between products and target air-content levels.

Equivalent in mL
150 mL

With the figures above, the admixture volume needed comes to 0.15. Note that total cement mass in batch sits at the low end of the range this calculator was checked against, so treat the output as indicative rather than settled. The method behind this is well established, though site conditions and material batches will move it somewhat. This is calculated for United States and cites IRC 2024. Building in another market? Change the selector above so the units and code reference follow.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Admixture dosage is expressed per unit cement mass on the manufacturer's technical data sheet — total admixture volume = (total cement mass / 100 kg) x dosage rate per 100 kg of cement

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Frequently asked questions

Why does concrete need entrained air?
Microscopic, evenly-distributed air bubbles give freeze-thaw water somewhere to expand into, dramatically reducing freeze-thaw damage in climates with winter freezing — required by code for most exterior concrete in cold climates.
How is target air content different from dosage rate?
Dosage rate is what you add; target air content (typically 4-8% depending on aggregate size and exposure) is the result you're aiming for — the relationship between the two depends on your specific mix, mixing time, and admixture, so field air-content testing (ASTM C231/C173) is still necessary to confirm you hit the target.
Can too much air-entraining admixture hurt strength?
Yes — every 1% increase in air content typically reduces compressive strength by roughly 2-5%, so dosage should be calibrated to hit the target air percentage, not simply maximized.