Concrete Evaporation Rate

ACI 305R Uno equation — lb/ft²/hr or kg/m²/hr with shrinkage-cracking risk bands.

Evaporation rate

5.278 lb/ft²/hr

ACI 305R action threshold: 0.2 lb/ft²/hr

≥ 0.2 lb/ft²/hr — plastic shrinkage risk; use fogging, windbreaks, or evaporation retarders (ACI 305R).

1.788 kg/m²/hr

Uses the simplified Uno / ACI 305R equation (Menzel nomograph basis) for moisture loss from a fresh concrete surface. Measure wind about 20 in (50 cm) above the slab. If evaporation is high, use fog sprays, windbreaks, shade, or evaporation retarders per your project spec — this is a field planning aid, not a substitute for jobsite judgment.

Concrete Evaporation Rate Calculator helps you aci 305r uno equation — lb/ft²/hr or kg/m²/hr with shrinkage-cracking risk bands. It is commonly used by domain specialists, operations teams, learners for concrete evaporation rate calculator, plastic shrinkage cracking, aci 305r evaporation.

Concrete Evaporation Rate Calculator

ACI 305R Uno equation — lb/ft²/hr or kg/m²/hr with shrinkage-cracking risk bands.

  • Runs entirely in your browser.
  • For planning and education; verify critical decisions with qualified professionals.

Disclaimer: Specialty calculators provide rough estimates for planning and education, not professional engineering, tax, or legal advice.

Frequently Asked Questions