Dryfibers
Multifilament Polypropylene Fibers for Concrete
Drykos® Dryfibers are high-performance auxiliary polypropylene microfibers of the multifilament type, specifically designed for addition to various cementitious mixtures, such as concrete, mortars, plasters, and screeds.
The incorporation of Drykos® Dryfibers into the mix effectively counteracts the formation of plastic shrinkage cracks, improving the control of microcracks during the early stages of setting and curing of the mixture. The presence of the microfibers also provides significant benefits in terms of ductility and cohesion of the mix, contributing to increased impact resistance, resistance to freeze-thaw cycles, and overall impermeability of the hardened material.
Drykos® Dryfibers improve the volumetric stability of the mixture, promoting a more uniform distribution of internal stresses and greater long-term durability of the completed works.
The product is available in three different lengths: 6 mm, 12 mm, and 18 mm, to allow optimal selection based on the type of application and required performance.
Features
Main features
- Effectively counteract the formation of plastic shrinkage cracks
- Improve the ductility and cohesion of the cementitious mixture
- Increase impact resistance
- Improve resistance to freeze-thaw cycles
- Contribute to increased overall impermeability of the hardened material
- Promote a more uniform distribution of internal stresses
- Improve the durability and volumetric stability of works over time
- Do not alter the workability of the mix when correctly dosed
Fields of application
- Structural and non-structural concrete
- Cementitious mortars
- Traditional and premixed plasters
- Cementitious screeds
- Industrial and civil castings
- Precast concrete elements
Technical specifications
Packaging
Color
White.
Appearance
Filaments.
Storage
The product has no storage limitations if correctly stored.
Storage conditions
Store correctly in the original, sealed, intact packaging, protected from moisture, frost, and direct sunlight exposure, at temperatures between +5°C and +35°C.
Application data
Theoretical consumption
~ 1 kg per m3 of concrete.
Yield
1 m3/kg of fibers.
Application info
Product preparation
Drykos® Dryfibers are supplied ready to use and require no preliminary preparation.
The microfibers are packaged in water-degradable bags, which can be inserted directly into the concrete mixer or truck mixer during the mixing phase, without the need for opening, promoting uniform distribution of the product and reducing operational time on site.
Application
Drykos® Dryfibers must be added directly to the cementitious mixture during the mixing phase. It is recommended to introduce the microfibers into the mixer together with the aggregates or binder, before adding the mixing water, in order to ensure uniform distribution within the cementitious mixture.
Mixing must be carried out with the concrete mixer drum at full speed for at least 5–6 minutes, verifying the complete dispersion of the microfibers and avoiding the formation of agglomerates.
In the case of adding Drykos® Dryfibers to a truck mixer containing already-prepared concrete, introduce the microfibers directly through the loading opening, with the drum rotating, and continue mixing while maintaining rotation at mixing speed for at least 5 minutes, in order to ensure uniform dispersion of the microfibers within the concrete. Before placement, visually verify the homogeneity of the mix.
Cleaning of tools
Clean tools with water immediately after use.
Other indications
- For matters not covered, contact Technical Support at +39 0171 1874992 or write to [email protected].
Technical performance
Environment and safety
Safety
The product is classified as an article and, in accordance with Regulation (EC) No. 1907/2006 (REACH), does not require the preparation of a Safety Data Sheet. During handling and use operations, however, the use of appropriate personal protective equipment, such as gloves and protective eyewear, is recommended, along with compliance with the safety procedures established in the workplace.
The product contains microplastics. The microparticles of synthetic polymers supplied fall within the scope of entry 78 of Annex XVII of Regulation (EC) No. 1907/2006. The use of the product is permitted exclusively in industrial settings, in accordance with derogation 4a, and provided that, in the intended end use, the microparticles are permanently incorporated into a solid matrix, as provided for by derogation 5c.
Avoid dispersing the product into the environment. In case of accidental spillage, collect the material and clean the affected area. Do not disperse wash water into the environment. Dispose of any waste in accordance with applicable local and national regulations.
Use
Product for professional use.