Mass Concrete Temperature — Raft Foundation (1.5 m)
Peak core temperature and core-surface differential for a raft foundation (1.5 m) from binder content.
A 1.5 m raft is firmly 'mass concrete' — the core cannot shed heat as fast as hydration makes it. At 380 kg/m³ of OPC the core peaks near placement+45 °C; the 20 °C core-to-surface limit, not the peak itself, decides whether the blankets go ON (yes — warm surface, smaller gradient).
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.
Peak core temperature and core-surface differential for a raft foundation (1.5 m) from binder content. A free concrete curing, maturity & strength tool — no sign-up, no upload, instant results in your browser.
About Mass Concrete Temperature — Raft Foundation (1.5 m)
Mass Concrete Temperature — Raft Foundation (1.5 m) computes the governing relationship ΔT ≈ (binder/100)·k · T_max = T_place + ΔT · check ΔT_core-surface ≤ 20 °C live as you type. A 1.5 m raft is firmly 'mass concrete' — the core cannot shed heat as fast as hydration makes it. At 380 kg/m³ of OPC the core peaks near placement+45 °C; the 20 °C core-to-surface limit, not the peak itself, decides whether the blankets go ON (yes — warm surface, smaller gradient). 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 Mass Concrete Temperature — Raft Foundation (1.5 m)
- 1Enter your values — Cementitious content, Placement temperature, Rise per 100 kg binder, Expected surface temperature (sensible defaults are pre-filled).
- 2Read the live results: Peak core temperature, Adiabatic rise, Core–surface differential.
- 3Check the "with your numbers" line to see ΔT ≈ (binder/100)·k · T_max = T_place + ΔT · check ΔT_core-surface ≤ 20 °C substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Mass Concrete Temperature — Raft Foundation (1.5 m)?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula ΔT ≈ (binder/100)·k · T_max = T_place + ΔT · check ΔT_core-surface ≤ 20 °C with authoritative sources cited on the page (ACI 207.1R/207.2R — Mass concrete; CIRIA C766 — Control of cracking in early-age concrete)
- ✓A 1.5 m raft is firmly 'mass concrete' — the core cannot shed heat as fast as hydration makes it.
- ✓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 mass concrete temperature — raft foundation (1.5 m) use?+
It evaluates ΔT ≈ (binder/100)·k · T_max = T_place + ΔT · check ΔT_core-surface ≤ 20 °C, exactly as published. Sources: ACI 207.1R/207.2R — Mass concrete; CIRIA C766 — Control of cracking in early-age concrete. 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?+
A 1.5 m raft is firmly 'mass concrete' — the core cannot shed heat as fast as hydration makes it. 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?+
Peak core temperature and core-surface differential for a raft foundation (1.5 m) from binder content. A free concrete curing, maturity & strength tool. At 380 kg/m³ of OPC the core peaks near placement+45 °C; the 20 °C core-to-surface limit, not the peak itself, decides whether the blankets go ON (yes — warm surface, smaller gradient). 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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