Microfiber

Micro fibers come in many thicknesses and lengths, but what they all have in common is that they:

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• Prevents cracks
• Provides increased bending strength
• Reduce explosive peeling
• increases ductility
• Provides increased impact resistance

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Below is described one of the most commonly used microfibers for more information about the other microfibers go to https://danishfibres.com/. 

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Wiking® 18 Micron

Is a monofilament fiber, which is extruded into very fine fibers and is especially effective in preventing cracking during the drying phase of concrete. The fibers are used in any type of concrete where you want to prevent cracks caused by plastic shrinkage. The fibers are suitable as a fire retardant ingredient, e.g. in tunnel constructions.