Curing — Wet Hessian / Burlap Schedule
Wet Hessian / Burlap Schedule calculator for concrete curing planning and material take-off.
Hessian works only while it is actually WET — dry burlap wicks water out of the slab, worse than nothing. Two layers under polyethylene stretch the re-wetting interval threefold; the calculator's interval entry is where wind and sun honesty belongs.
Formula
Note: Planning estimate only — strength for structural decisions (formwork striking, post-tensioning, loading) must be verified by site-cured specimens or a calibrated maturity system per the project specification.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
Wet Hessian / Burlap Schedule calculator for concrete curing planning and material take-off. A free concrete curing, maturity & strength tool — no sign-up, no upload, instant results in your browser.
About Curing — Wet Hessian / Burlap Schedule
Curing — Wet Hessian / Burlap Schedule computes the governing relationship n = days·24/interval · V = n × L/m² × A live as you type. Hessian works only while it is actually WET — dry burlap wicks water out of the slab, worse than nothing. Two layers under polyethylene stretch the re-wetting interval threefold; the calculator's interval entry is where wind and sun honesty belongs. Defaults are pre-filled with realistic values for this exact scenario, and the worked example substitutes your numbers step by step so the math is never a black box.
How to use Curing — Wet Hessian / Burlap Schedule
- 1Enter your values — Covered area, Hessian layers, Re-wetting interval, Curing duration and more (sensible defaults are pre-filled).
- 2Read the live results: Total wettings, Total water, Hessian needed.
- 3Check the "with your numbers" line to see n = days·24/interval · V = n × L/m² × A substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Curing — Wet Hessian / Burlap Schedule?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula n = days·24/interval · V = n × L/m² × A with authoritative sources cited on the page (ACI 308R — Guide to external curing of concrete; Neville, A.M., Properties of Concrete, 5th ed.)
- ✓Hessian works only while it is actually WET — dry burlap wicks water out of the slab, worse than nothing.
- ✓SI ⇄ Imperial toggle converts your inputs in place, so you can work in the units your drawings use
Frequently asked questions
What formula does the curing — wet hessian / burlap schedule use?+
It evaluates n = days·24/interval · V = n × L/m² × A, exactly as published. Sources: ACI 308R — Guide to external curing of concrete; Neville, A.M., Properties of Concrete, 5th ed.. The substituted worked example on the page lets you verify every step against the textbook.
How should I read the result — and how far can I trust it?+
Hessian works only while it is actually WET — dry burlap wicks water out of the slab, worse than nothing. Planning estimate only — strength for structural decisions (formwork striking, post-tensioning, loading) must be verified by site-cured specimens or a calibrated maturity system per the project specification.
When is this calculator the right tool for the job?+
Wet Hessian / Burlap Schedule calculator for concrete curing planning and material take-off. A free concrete curing, maturity & strength tool. Two layers under polyethylene stretch the re-wetting interval threefold; the calculator's interval entry is where wind and sun honesty belongs. For neighbouring scenarios, the related tools below cover the same engine with different presets.
Does it support both metric and imperial units?+
Yes — the SI ⇄ Imperial toggle converts the values already in the fields, preserving the physical quantity, so you can flip mid-calculation without re-entering anything.
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