one of the latest technologies for structural concrete reinforcement is to use synthetic macro fiber, this material is very strong and has a high modulus. how to use it only by mixing this fiber into concrete with a certain dose, it can be used for readymix concrete or for precast industry. for cast in situ work, it is very suitable for use in casting slab on ground floors and composite floors for suspended slabs, and casting in coastal. The advantages of synthetic macro fiber as concrete reinforcement:
• Controls drying shrinkage cracking by controlling the propagation of micro-cracking thus improving toughness and durability of concrete.
• Can be used as an alternative to steel mesh reinforcement and steel fibre reinforcement.
• Uniformly distributed throughout the concrete matrix - no risk of incorrect steel mesh reinforcement placement.
• Improves residual flexural strength, impact and fatigue resistance of concrete - Re,3 values in excess of 30% can be reliably achieved (see UK Concrete Society Technical Report 34, 3rd Edition).
• Removes a site process so saves time on construction programme.
• No steel mesh storage, fixing, movement or crane costs.
• Ready-mix concrete truck can back up and freely discharge concrete which could remove/reduce pumping costs.

STRUX 90/40 from GCP is a structural synthetic macro fiber, which can be used as concrete reinforcement, as an alternative to steel rebar and steel fiber.