IMARA FIBRE · IMC-MF
Polypropylene Macrofibre
Designed fibre reinforcement for concrete performance and crack control.
System definition
How does polypropylene macrofibre reinforce concrete?
IMARA FIBRE is a polypropylene macrofibre for three-dimensional reinforcement and performance enhancement of concrete.
Fibre dosage is selected by the approved project documentation and verified against the concrete mix, structural function, placement method and required surface performance.
Technical content owner: IMARA Engineering Centre
- 01Product line
- IMARA FIBRE
- 02Family code
- IMC-MF
- 03Fibre length
- 30-40 mm
- 04Equivalent diameter
- 0.7-1.0 mm
Technical data
Open the data required for assessment.
The first section is open for immediate reference. Expand further properties, dimensions, supply information and documentation as required.
01Product identity, properties and articlesDeclared IMARA FIBRE properties, references and packaged commercial articles.+
| Property | Reference value |
|---|---|
| Commercial line | IMARA FIBRE |
| Family code | IMC-MF |
| Official product name | IMARA Composites Polypropylene Macrofibre |
| Material | 100% pure virgin polypropylene |
| Fibre length | 30-40 mm |
| Equivalent diameter | 0.7-1.0 mm |
| Tensile strength | ≥80 MPa |
| Recommended dosage | In accordance with project documentation |
| Polymer-fibre reference | EN 14889-2 |
| Fibre-reinforced concrete reference | ASTM C1116/C1116M |
| Packaging | Labelled packages from 1 to 5 kg |
| Article | Description |
|---|---|
| IMC-MF-PP-L3040-E0710-P1000 | Polypropylene macrofibre, 30-40 mm, equivalent diameter 0.7-1.0 mm, 1 kg package |
| IMC-MF-PP-L3040-E0710-P5000 | Polypropylene macrofibre, 30-40 mm, equivalent diameter 0.7-1.0 mm, 5 kg package |
02Dosage and reinforcement functionDosage is selected by approved project documentation and the required concrete performance.+
- The declared product dosage is established in the project documentation.
- The concrete mix, structural function, placement method and finish are verified before release.
- Reference laboratory comparison data used 3 kg/m³ in B22.5 concrete.
03Comparative concrete performanceReference laboratory results for the tested B22.5 concrete composition and 3 kg/m³ fibre dosage.+
- The comparison used control concrete without fibre and concrete containing 3 kg/m³ polypropylene fibre.
- Compression specimens were 100 × 100 × 100 mm cubes tested at 3, 7 and 28 days.
- Flexural beam specimens were tested at 28 days under the stated laboratory conditions.
- Results are comparative test values and are not statistical characteristic values or design strengths.
| Age | Control results | Control mean | Fibre results | Fibre mean | Change in mean |
|---|---|---|---|---|---|
| 3 days | 20.1; 21.4 MPa | 20.75 MPa | 21.3; 21.4 MPa | 21.35 MPa | +2.9% |
| 7 days | 24.3; 24.3 MPa | 24.30 MPa | 26.1; 26.1 MPa | 26.10 MPa | +7.4% |
| 28 days | 33.0; 31.7 MPa | 32.35 MPa | 35.0; 35.2 MPa | 35.10 MPa | +8.5% |
| Characteristic | Control concrete | Fibre concrete, 3 kg/m³ | Relative change |
|---|---|---|---|
| Flexural strength at 28 days | 10.6 MPa | 15.7 MPa | +48.1% |
04Mixing, placement and storageProcedures that preserve uniform fibre distribution and concrete finish.+
- Add gradually before water or into the finished mix and mix at high speed for approximately one minute.
- Do not add water to ready-mixed concrete to accommodate a higher fibre dosage.
- Avoid excessive immersion-vibrator compaction that can draw fibres to the surface.
- Store in a dry place; stated shelf life is three years from manufacture.
- Supply packaging is labelled in 1 kg and 5 kg packages.
05Specification and acceptanceInformation required to connect fibre dosage with concrete performance.+
- The specification identifies fibre type, length, dosage and intended reinforcement function.
- Dosage is validated against the concrete mix, placement method, finish and required crack-control performance.
- Trial mixing confirms uniform dispersion and compatibility with batching and pumping equipment where applicable.
- Delivery records identify product, batch, packaging, quantity and stated shelf life.
- A higher dosage is not accommodated by adding water to ready-mixed concrete.
Fibre dosage must be validated against mix design, structural function, placement method and required surface finish. Values shown are reference ranges, not a substitute for a concrete design.
Project context
Applications and benefits are supporting information.
Use these references to identify a potential material system, then confirm suitability through engineering verification.
Open supporting informationApplications & engineering benefits+
Swipe or scroll horizontally to view all
Engineering verification
Submit project parameters and drawings.
IMARA will review the structural function, environment, governing requirements, supply format and interfaces with adjacent systems.