Mix Quantities — Water-Retaining Mix (1:1.5:3 + limits)
Cement bags, sand and aggregate for Water-Retaining Mix (1:1.5:3 + limits) from wet volume with yield factor.
Tanks and sumps use M20-shaped ratios with non-negotiable extras: w/c ≤ 0.45, minimum 350 kg/m³ cement, and crack-width-driven detailing. The quantities match the M20 row; the discipline differs — water-retaining work fails by permeability, never by cube strength.
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.
Cement bags, sand and aggregate for Water-Retaining Mix (1:1.5:3 + limits) from wet volume with yield factor. A free concrete curing, maturity & strength tool — no sign-up, no upload, instant results in your browser.
About Mix Quantities — Water-Retaining Mix (1:1.5:3 + limits)
Mix Quantities — Water-Retaining Mix (1:1.5:3 + limits) computes the governing relationship dry vol = wet × factor; split 1:1.5:3; cement at 1,440 kg/m³; water = w/c × cement live as you type. Tanks and sumps use M20-shaped ratios with non-negotiable extras: w/c ≤ 0.45, minimum 350 kg/m³ cement, and crack-width-driven detailing. The quantities match the M20 row; the discipline differs — water-retaining work fails by permeability, never by cube strength. 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 Mix Quantities — Water-Retaining Mix (1:1.5:3 + limits)
- 1Enter your values — Wet (finished) volume, Dry volume factor, Water-cement ratio, Wastage (sensible defaults are pre-filled).
- 2Read the live results: Cement (50 kg bags), Sand, Coarse aggregate, Water.
- 3Check the "with your numbers" line to see dry vol = wet × factor; split 1:1.5:3; cement at 1,440 kg/m³; water = w/c × cement substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Mix Quantities — Water-Retaining Mix (1:1.5:3 + limits)?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula dry vol = wet × factor; split 1:1.5:3; cement at 1,440 kg/m³; water = w/c × cement with authoritative sources cited on the page (IS 456:2000 — Plain and reinforced concrete code of practice; IS 10262 — Concrete mix proportioning guidelines)
- ✓Tanks and sumps use M20-shaped ratios with non-negotiable extras: w/c ≤ 0.45, minimum 350 kg/m³ cement, and crack-width-driven detailing.
- ✓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 mix quantities — water-retaining mix (1:1.5:3 + limits) use?+
It evaluates dry vol = wet × factor; split 1:1.5:3; cement at 1,440 kg/m³; water = w/c × cement, exactly as published. Sources: IS 456:2000 — Plain and reinforced concrete code of practice; IS 10262 — Concrete mix proportioning guidelines. 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?+
Tanks and sumps use M20-shaped ratios with non-negotiable extras: w/c ≤ 0.45, minimum 350 kg/m³ cement, and crack-width-driven detailing. 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?+
Cement bags, sand and aggregate for Water-Retaining Mix (1:1.5:3 + limits) from wet volume with yield factor. A free concrete curing, maturity & strength tool. The quantities match the M20 row; the discipline differs — water-retaining work fails by permeability, never by cube strength. 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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