Polypropylene fibers for increasing concrete performances

1. CRACKSTOP – Monofilament polypropylene fibers for preventing cracking of concrete 

Classic steel reinforcement, even properly designed, does not prevent or significantly reduce the cracking tendency of concrete, it just maintain the crack opening after they have already formed. Also, steel reinforcement can get rusted if the pH value of concrete decrease for some reason under the critical value thus affecting the structural integrity.

Crackstop is a patented range of monofilament polypropylene fibers that reduce the occurrence of plastic shrinkage and plastic settlement cracking, whilst enhancing the surface properties and the durability of hardened cementitious products. The fibers are extremely fine, single filaments, measuring 18 microns in diameter, cut to lengths of 3 and 19 mm, in accordance with maximum aggregate size considerations and surface appearance requirements. The fibers are coated with a surfactant to improve initial dispersion and bonding. Crackstop fibers are extremely fine and, although slightly visible in the plastic state, are not readily seen on the hardened surface.

Advantages and Benefits

• Reduced plastic shrinkage cracks
• Reduced plastic settlements
• Reduced bleeding
• Alternative to crack control mesh
• Increased abrasion properties
• Increased impact resistance
• Improved freeze/thaw resistance
• Reduced water & chemical permeability

Applications

• Internal floor slabs
• External hard standings
• Bridges
• Precast concrete
• Agricultural areas
• Shtocrete/Gunite
• Water retaining structures
• Piling concrete
• Repair materials
• Pattern imprinted concrete
• Road pavements
• Extruded concrete
• Runway aprons
• Sea defense
• Renders and plasters

Download TDS Crackstop

Technical Data

2. DURUS S400 – Embossed polypropylene macro fibers for concrete reinforcement

Durus S400 is a range of embossed macro synthetic fibers, cut to the length of 45 mm and 55 mm, for a wide range of concrete applications. Durus S400 can be used for fresh concrete, prefabricated concrete and shotcrete applications, for underground or above grade constructions. Fibers’ embossing improves the adherence to concrete and the overall concrete performances.

Advantages and benefits

• The product will enhance the toughness of the concrete and alleviate the need for steel mesh.
• When used with the appropriate design and at the recommended dosage.
• Can be used as an alternative to steel reinforcement.
• Easier and safer to handle than steel reinforcement.
• Construction time is decreased.
• No risk of being misplaced.
• No need for cutting, fixing and placing steel mesh.
• Reduced wear on concrete pumps.
• Does not rust or corroded.
• Offers a 3-Dimensional reinforcement system.

Applications

• Internal floor slabs
• External hardstandings and pavements
• Precast concrete elements
• Agricultural areas
• Marine / coastal defense concrete
• Sprayed concrete

Download Durus S400 – 45 mm TDS

Download Durus S400 – 55 mm TDS

Technical details