Description DESCRIPTION SikaFiber®-12 is a high-quality, 100% virgin polypropylene fibre designed to minimize plastic shrinkage and settlement cracking while improving the surface properties and durability of cement-based materials. It is treated with a surfactant to enhance initial dispersion and bonding with the cement paste. Suitable for use in hot and tropical climates. USES SikaFiber®-12 helps prevent micro-cracking caused by plastic and drying shrinkage in various cementitious systems, including: Concrete Shotcrete Cementitious overlays Industrial floor slabs Patch repairs to pre-cast elements Water retaining structures High-performance concrete Precast concrete tunnel segments CHARACTERISTICS / ADVANTAGES Helps reduce future repair costs In shotcrete: Allows for greater thickness application in a single pass Reduces rebound Enhances early-age crack control Lowers line pressure in spray pumps Can decrease the need for set accelerators APPROVALS / CERTIFICATES Complies with EN 14889-2: Polymer Fibres – Definitions, Specifications, and Conformity PRODUCT INFORMATION Composition: Polypropylene Packaging: 0.6 kg water-soluble bags (30 bags per box, other packaging sizes available on request) Appearance / Colour: White fibre Shelf Life: 12 months from the production date if stored properly Storage Conditions: Store in dry conditions, in unopened, undamaged original packaging, at temperatures between 5°C and 45°C. Protect from direct sunlight and frost Density: ~0.91 kg/l ( 25°C) Fibre Length: ~12 mm Fibre Diameter: ~18 µm Melting Point: ~160°C TECHNICAL INFORMATION Concreting Guidance: Follow standard good concreting practices for production and placement. Ensure proper curing of fresh concrete, especially in high temperatures, to prevent shrinkage. Use Sika® Antisol® products or wet hessian for curing. APPLICATION INFORMATION Recommended Dosage: 0.6 kg/m³. Adjust dosage based on mix design, raw materials, and climatic conditions; perform trial mixes to determine the exact dosage. Compatibility: Compatible with all types of Portland cement, concrete containing pozzolanic materials (e.g., GGBS, PFA, micro-silica), and various Sika products including: Sikament® Sika® ViscoCrete® SikaPlast® Sika Aer® Plastiment® Dispensing: Plant Mixing: Add SikaFiber®-12 after all other ingredients and water, ensuring uniform dispersion. Truck Mixing: Best added in the batching plant mixer, or if necessary, in the truck mixer. First add the fibre with about 30% of the mixing water, then add other ingredients, the remaining water, and mix at full speed to ensure even dispersion.
