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Polypropylene fibre characteristics
| Characteristics | PP |
|---|---|
| Diameter [µm] | 0.032 |
| Length [mm] | 12 |
| Elongation [%] | 10 |
| Tensile strength [MPa] | 600 – 700 |
| Modulus of elasticity [GPa] | 36 |
| Shape | Straight |
| Density [kg/m3] | 910 |
| Colour | White |
The development of compressive strength of all the mixes with time
| Age [ Days] | Ref. [MPa] | 1%PP [MPa] | WAPB [MPa] | Hybrid [MPa] |
|---|---|---|---|---|
| 7 | 53 | 53 | 55 | 61 |
| 28 | 67 | 68 | 72 | 75 |
| 60 | 70 | 71 | 74 | 76 |
| 90 | 73 | 73 | 77 | 79 |
Properties of superplasticizer
| Properties | Description |
|---|---|
| Commercial name | ViscoCrete-180 GS |
| PH | 4–6 |
| Colour | Light brownish liquid |
| Chloride content | Nil |
| Specific gravity, [g/cm3] | 1.070 |
The mix proportions for 65 MPa
| Material | Ref. mix | 1% PP fibre mix | WAPB mix | Hybrid mix |
|---|---|---|---|---|
| Cement [kg/m3] | 450 | 450 | 450 | 450 |
| Sand [kg/m3] | 760 | 760 | 760 | 760 |
| Coarse aggregate [kg/m3] | 810 | 810 | 810 | 810 |
| Silica Fume [kg/m3] | 50 | 50 | 50 | 50 |
| w/b | 0.35 | 0.35 | 0.35 | 0.35 |
| Superplasticizer% | 1.5 | 1.5 | 1 | 1 |
| PP fibres% | - | 1.0 | - | 1.0 |
| WAPB% | - | - | 5 | 5 |