Explicit basis
Bitumen, filler and aggregates are percentages of total mixture mass. Plastic is entered separately as a percentage of bitumen mass.
Materials engineering toolkit
Design a bituminous concrete trial mix, verify every component against declared limits, and calculate mould quantities without hidden assumptions.
01 / Trial proportioning
Enter one proposed composition. Coarse aggregate is calculated as the balance so the final mixture always totals 100%.
Based on a 1,200 g trial mass
| Material | Percentage | Mass | Check |
|---|---|---|---|
| Total mixture | 100.000% | 1,200.00 g | Balanced |
02 / Specimen preparation
Calculate the internal mould volume and the mass of material required to fill it at a specified density.
Calculated with π × diameter² ÷ 4 × height.
03 / Transparent methodology
This calculator supports preliminary trial proportioning. Final mix approval still requires laboratory testing and the project’s governing specification.
Bitumen, filler and aggregates are percentages of total mixture mass. Plastic is entered separately as a percentage of bitumen mass.
Coarse aggregate is the remainder after all other components, guaranteeing a traceable 100% total when the mix is valid.
Inputs are checked against the declared working ranges. Marshall stability, flow, air voids and other laboratory criteria remain essential.
Working ranges shown here mirror the project brief and are configurable design guardrails—not a substitute for checking the current edition of applicable MoRTH, IRC, IS, ASTM or agency specifications.
04 / Original project guidance
Calculate the proportioning of bituminous concrete using a job-mix formula and the Marshall Stability method.
The original project identifies Bituminous Paving Mixtures — Fundamentals for Design as its source of general material-proportion guidance.
Verification required These are the ranges stated by the original calculator. Confirm the current governing specification and laboratory job-mix requirements before engineering use.
IS 73:2013 — Paving Bitumen Specification
IS 3812 (Part I):1969
IS 383:1970
Original project working range
IRC:SP:98-2013 — entered here by bitumen mass
05 / Project attribution
Credits retained from the original Composition Calculator project.