Available on Request
Macro Synthetic PP / Polyolefin Fiber
Engineered macro polymer fibers for hardened-concrete crack bridging, toughness and residual-performance objectives in slabs, precast and shotcrete.
Macro geometry
A polymer fiber designed for post-crack work
Macro synthetic fibers are larger engineered polypropylene or polyolefin elements. Embossed, twisted, crimped or fibrillating forms are used to develop bond and bridge cracks after the concrete matrix cracks.
Where specifiers consider it
Hardened-concrete applications
Batching and placement
Dispersion must be demonstrated in the plant
Macro fibers can affect consistency, pumping and finish. Use the supplied product instructions, introduce fibers where sufficient mixer shear is available and extend mixing as required by the product and trial.
- Do not correct workability by adding uncontrolled water
- Confirm admixture and mix compatibility
- Inspect fiber separation or agglomeration
- Trial pumping, placing and finishing
- Verify dosage through the required performance test
- Confirm any substitution through project design approval
Relevant frameworks
Performance evidence belongs in the specification
Performance-based selection
Begin with the required concrete result
Define element
Slab, precast, shotcrete or another application with geometry and exposure.
Set criterion
Residual strength, toughness, crack control or project-specific acceptance.
Select product
Choose fiber geometry and dosage supported by source data and testing.
Trial and verify
Confirm batching, placement, finish and required concrete test result.
Evaluate a macro synthetic fiber
Send the slab, precast or shotcrete performance requirement, concrete mix context, quantity and construction method.