Fibre properties
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Instead of the regular viscous PP melt, the new patented special fibre PB EUROFIBER HPR is distinguished by the low viscosity and oily consistence of its melts. |
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PB EUROFIBER HPR melts have, according to MFR (melt flow rate) measurements, a
40 to 50 fold higher ease of flow than standard polypropylene fibres. |
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PB EUROFIBER HPR provides the required fire protection at
a highly reduced fibre dosage, thereby simplifying the manufacturing process of the concrete. |
Typical
application areas
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Refractory concretes / materials |
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Refractory tubings for tunnel constructions |
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Field of application also includes special concrete, e.g. high performance concrete (HFB/UHFB) and self compacting concrete (SCC) |
Advantages
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Optimised fire resistance |
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Low fibre dosage:
500 - 900 g per m³ concrete
is generally enough |
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Potential savings for fibre dosage costs |
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Reduces the amount of additional additives required, e.g. plasticizer; Cost Reduction |
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Optimised for processing fibre concrete (easier processing) |
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Reduction of air voids and consequently optimising the concrete quality |
Approval
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Building-authority admission
of the German building institute |
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PB EUROFIBER HPR
To maximise the fire resistance of concrete
PB EUROFIBER HPR is the new, patented PP special fiber to maximise the fire resistance of concrete.
Depending on the required fire saftey regulations and on the concrete mix already a 50 - 70 % minimised fibre dosage of PB EUROFIBER HPR achieves the stipulated protection against fire.
Maximum increase of fire resistance of concretes.
PB EUROFIBER HPR has a significantly faster ease of flow when melted as compared all other PP fibres available on the market. This special feature works in a fire to allow the fibre to melt much faster within the concrete matrix, leading to a rapid creation of the important micro channels needed to discharge the vapour pressure from the concrete.
| Technical specifications |
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| Fibre class |
Polypropylene from 100 % virgin PP |
| Fibre geometry |
1,7 dtex (15,4 mic), 6 mm cutting length |
| Fibre quantity per kg |
approx. 1 billion |
| Fibre length per kg |
approx. 6 million km |
| Melt Flow Index (230 °C / 2,16 kg) |
> 1000 (PP-standard fibres = approx. 30) |
| Spalling volume dependent on dosage |
Comparative competitor fibres vs. baumhueter standard fibre PB EUROFIBER vs. PB EUROFIBER HPR
The diagram shows the measured flaking volume of the test body using different PP fibres.
The flaking volume of the so called 0 concrete is set as the base value at 100%.
The flaking volume of the concrete test bodies with PP fibre additive is measured at 2 and 1 kg of fibre dosage.
Additionally, PB EUROFIBER HPR was tested at 0,5 kg/m³.
(Test body: concrete block 100 x 100 mm, CEM I 42,5 R HS or SR, pressure resistance 7 days = 52 N/mm²) |
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