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Mapefibre ST 42

Macrosynthetic Fiber Reinforcement for Concrete

Mapefibre ST 42 is a blend of polypropylene and polyethylene resins, configured as waved fiber. It is used for concrete reinforcement, to replace some rebar system and welded wire mesh (WWM) reinforcement, as well as steel fibers. Mapefibre ST 42 is cut to 1.65" (42 mm) in order to optimize ease of use and dispersion in concrete, as well as finishing and ultimate properties of concrete.

Mapefibre ST 42 provides excellent results according to the ASTM C1609 test method.

Reduced plastic shrinkage and cracking
Excellent acid/salt/alkali resistance
A more homogeneous concrete reinforcement from the top to the bottom of concrete slabs
Particularly suitable for Industrial interior/exterior slabs-on-grade, warehouses slabs-on-ground, roadways and pavements, composite decks, bridge decks, precast elements, shotcrete, precast septic tanks and burial vaults, precast pipes and panels, and concrete paving
Compatible with all other MAPEI admixtures used in the manufacture of high-quality concrete

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Mapefibre - A complete line of fibers for concrete

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Admixtures for Concrete

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Mapefibre ST 42 is part of the lines:

Admixtures for Concrete - Fiber Reinforcement

FAQs

Why did my concrete crack?

There are many causes for cracking in concrete. Concrete goes through many changes as it hydrates or hardens. Allowing the concrete to harden and achieve strength before these stresses arise will eliminate a large portion of these cracks. Proper curing, a good mix design, use of shrinkage-reducing admixtures and the addition of fibers are all good ways to help minimize some types of cracking.

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Why do I need reinforcement in the concrete?

Concrete is very good in compression but poor in tension. Reinforcement allows the concrete structure to maintain its compressive integrity while still providing good resistance to tensile or flexural stresses.

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Mapefibre ST 42

Mapefibre ST 42