Paving QC — Thermal Segregation Check
Thermal Segregation Check for paving quality and operations decisions.
Cold spots behind the screed are tomorrow's potholes with a paper trail: truck-end segregation prints a cool diamond every load, and those diamonds core low density for the rest of the pavement's life. IR bars and this simple differential turned an invisible defect into a measurable one.
Formula
Note: Paving estimates only — the project mix design, agency specification and the plant's QC data govern. Temperature models are simplified; verify with an infrared gun and density gauge on the mat.
Thermal Segregation Check for paving quality and operations decisions. A free asphalt paving temperature & logistics tool — no sign-up, no upload, instant results in your browser.
About Paving QC — Thermal Segregation Check
Paving QC — Thermal Segregation Check computes the governing relationship ΔT = T_max − T_min across the mat behind the screed live as you type. Cold spots behind the screed are tomorrow's potholes with a paper trail: truck-end segregation prints a cool diamond every load, and those diamonds core low density for the rest of the pavement's life. IR bars and this simple differential turned an invisible defect into a measurable one. 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 Paving QC — Thermal Segregation Check
- 1Enter your values — Hottest mat reading, Coolest reading (same area) (sensible defaults are pre-filled).
- 2Read the live results: Temperature differential.
- 3Check the "with your numbers" line to see ΔT = T_max − T_min across the mat behind the screed substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Paving QC — Thermal Segregation Check?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula ΔT = T_max − T_min across the mat behind the screed with authoritative sources cited on the page (NAPA — HMA paving handbook & best practices; MultiCool / Minnesota DOT mat-cooling research (Chadbourn et al.))
- ✓Cold spots behind the screed are tomorrow's potholes with a paper trail: truck-end segregation prints a cool diamond every load, and those diamonds core low density for the rest of the pavement's life.
- ✓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 paving qc — thermal segregation check use?+
It evaluates ΔT = T_max − T_min across the mat behind the screed, exactly as published. Sources: NAPA — HMA paving handbook & best practices; MultiCool / Minnesota DOT mat-cooling research (Chadbourn et al.). 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?+
Cold spots behind the screed are tomorrow's potholes with a paper trail: truck-end segregation prints a cool diamond every load, and those diamonds core low density for the rest of the pavement's life. Paving estimates only — the project mix design, agency specification and the plant's QC data govern. Temperature models are simplified; verify with an infrared gun and density gauge on the mat.
When is this calculator the right tool for the job?+
Thermal Segregation Check for paving quality and operations decisions. A free asphalt paving temperature & logistics tool. IR bars and this simple differential turned an invisible defect into a measurable one. 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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