Use measured final blend volume rather than an additive assumption.
Why can averaging component densities miss the measured blend density?
Use the matching calculator
Use this decision sequence
- Record the component volumes and corresponding measured densities.
- Calculate retained mass for each component on a common basis.
- Supply the independently measured final blend volume.
- Divide total retained mass by that final volume rather than assuming component volumes add.
Keep the quantities distinct
| Quantity or assumption | How to use it |
|---|---|
| Component volumes | Describe the inputs before combining. |
| Final measured volume | Can differ after packing or displacement. |
| Retained mass | Must exclude any known loss before this comparison. |
Worked comparison
One 1 m³ component at 1,000 kg/m³ and another 1 m³ at 500 kg/m³ contain 1,500 kg total retained mass. If the independently measured final volume is 1.5 m³, the reconciled density is 1,000 kg/m³. Dividing by an assumed 2 m³ input-volume sum would instead give 750 kg/m³.
Check before using the estimate
The tool does not choose a blend recipe or material suitability. Its mass-retention assumption must match the measurement. The example values are illustrative arithmetic inputs. Replace them with your measured plan, selected product information and actual quote where relevant.
All dimensions, product properties, prices and specifications in this example are illustrative arithmetic inputs. Use the values from your measured plan, selected product data sheet and supplier quote. This guide does not choose construction specifications or certify safety.
Calculation and scope checked 2026-10-04. Methods and scope.