| HS Code | 172997 |
| Material | Polypropylene |
| Fiber Type | Macro synthetic fiber |
| Form | Monofilament |
| Color | Natural |
| Length | 54 mm |
| Diameter | 0.45 mm |
| Aspect Ratio | 120 |
| Density | 0.91 g/cm3 |
| Tensile Strength | >600 MPa |
| Elastic Modulus | >9 GPa |
| Melting Point | 160 °C |
| Water Absorption | <0.1% |
| Alkali Resistance | Excellent |
| Dosage | 3 - 9 kg/m3 |
As an accredited SikaFiber 154 - Polypropylene Macro Fiber for Use in Concrete factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | SikaFiber 154 is supplied in 600 g water-soluble bags, with 20 bags per carton (12 kg total). |
| Container Loading (20′ FCL) | 20′ FCL: SikaFiber 154 polypropylene macro fiber bags on pallets, shrink-wrapped and strapped, evenly distributed, moisture-protected, secure for transport. |
| Shipping | SikaFiber 154 is shipped as a non-hazardous, non-regulated solid, typically in moisture-resistant bags or cartons, palletized and shrink-wrapped. No special dangerous-goods documentation is required. Transport in clean, dry vehicles; protect from moisture, punctures, and UV. Handle pallets with standard forklift equipment and store dry. |
| Storage | Store SikaFiber 154 in sealed original packaging in a cool, dry, well-ventilated area. Keep away from direct sunlight, moisture, heat, sparks, and open flames. Elevate pallets off the floor and avoid excessive stacking or compression. Maintain FIFO stock rotation. Protect bags from damage and contamination. Recommended storage temperature is 5–30°C; shelf life typically 24 months in unopened packaging. |
| Shelf Life | Shelf life: 24 months from date of manufacture if stored unopened, dry, and protected from direct sunlight and moisture. |
In a ground-supported industrial slab where welded wire reinforcement is removed from the placing sequence, SikaFiber 154 alters the concrete mix at the batching stage rather than the structural frame at the forming stage. The fibre is metered into a 9 m³ truck mixer after approximately 70–80% of the mix water has been added, with the mixing drum maintained at 12–16 rpm for a minimum of 5 min after fibre injection. The proportioning range for warehouse slabs is typically 3–6 kg/m³, with the lower bound applied to light internal areas and the upper bound applied to very-narrow-aisle racking aisles where local point loads exceed 8 t per leg. Compliance for fibre conformance follows ASTM C1116/C1116M Type III synthetic macrofibre classification and EN 14889-2:2006 polymer fibre CE marking, while slab design references ACI 360R-10 and the Concrete Society TR34 fourth edition for joint layout and racking load transfer. Post-crack residual flexural strength is evaluated under ASTM C1399/C1399M or EN 14651, with the test performed on beams sawn from the placed slab rather than laboratory-cast specimens when field acceptance is required. The downstream placing process uses a laser screed followed by a waiting period until bleed water has dissipated, then power floating and trowelling; trowelling too early leaves visible microfilament ends on the surface, while trowelling after the paste has stiffened to approximately 0.5–1.0 MPa surface hardness cuts the fibre ends flush with minimal protrusion. Terminal product types include e-commerce fulfilment centre ground-floor slabs, logistics cross-dock terminals, production halls with automated guided vehicle paths, and cold-storage slab sections where the fibre is used in combination with conventional reinforcement at column isolations and dock-leveller pits. The operational boundary is that SikaFiber 154 does not replace the dowels, tie bars, or continuity reinforcement at construction joints, nor does it eliminate the need for joint sawing in slabs longer than 40 m in any continuous pour direction.
| Dosage | Slab thickness | Typical terminal slab type | Performance test method |
|---|---|---|---|
| 3 kg/m³ | 125–150 mm | Light internal warehouse slab | ASTM C1399/C1399M |
| 4 kg/m³ | 150–175 mm | Logistics floor with conventional racking | EN 14651 |
| 5 kg/m³ | 175–225 mm | Very-narrow-aisle racking aisle | ASTM C1399/C1399M |
| 6 kg/m³ | 200–250 mm | Automated storage and retrieval slab | ASTM C1550 |
Wet-mix sprayed concrete containing 6 kg/m³ of SikaFiber 154 exhibits a measurable change in stream cohesion before the alkali-free accelerator is introduced at the nozzle. The dosage range for wet-mix tunnel and mine linings is 4–8 kg/m³, with the upper bound reserved for crown zones requiring higher energy absorption under ASTM C1550 round panel testing. Binder contents are typically maintained between 400–450 kg/m³, water-to-cementitious-material ratio between 0.40–0.45, and accelerator dose between 3–6% by mass of binder. Fibre is added to the aggregate before water in a central batch mixer to prevent balling; addition after water has led to visible rope-like clumps at the hopper screen on production batching plants. The shotcrete stream is pumped through a 50–65 mm internal-diameter hose and compressed air is injected at the nozzle at 4–7 m³/min. When the hose is reduced below 50 mm or bends with a radius below 250 mm, the macrofilament can bridge at the reducer and initiate a local buildup that raises pump line pressure by more than 0.5 bar in a matter of seconds. Layer application is limited to 50–100 mm per pass to avoid sag, with rebound trays placed according to ACI 506R-16; published data for SikaFiber 154 rebound under low-cement field conditions is limited, but production records consistently show less coarse aggregate rebound when compared with plain wet-mix control. Compliance references include EN 14487-1 for sprayed concrete specification and EN 14488-3 for flexural toughness in fibre-reinforced sprayed concrete, while the fibre itself carries EN 14889-2:2006 product conformity. Terminal product types include temporary access tunnel crown support, permanent mine drift liners, rock slope stabilization panels, and cut-and-cover interceptor walls where rapid ground support is needed before the final cast-in-place lining.
Precast box culvert and drainage channel production typically introduces the fibre into the dry aggregate weigh hopper before any water reaches the twin-shaft compulsory mixer. The addition rate for wet-cast precast elements is 3–5 kg/m³, with the lower bound used for thin-walled catch basins and the higher bound used for box culvert top slabs subject to handling impact. The process sequence in a 2.0 m³ twin-shaft mixer consists of 60 s dry blending after fibre injection, followed by 120 s wet mixing after the full water charge, with periodic amperage checks on the mixer drive to detect fibre accumulation on the shaft seals. High-frequency external vibrators on the steel moulds consolidate the mix without segregating the fibres; internal poker vibrators are avoided in sections thinner than 100 mm because they can orient the fibre into visible bundles at the form face. Steam curing is capped at 60–70 °C, well below the polypropylene softening threshold, to prevent dimensional change in the macrofilament. Compliance for hollow core and monolithic box sections follows ASTM C1433 for box culvert sections, with fibre conformity under EN 14889-2:2006 and mix design guidance under ACI 544.3R. Terminal product types include precast storm drainage channels, manhole base and riser sections, small box culverts for agricultural crossings, and cable trench covers where impact resistance from repeated lift-out is required. The structural cage remains mandatory for flexural capacity because the macrofibre does not provide the same crack-width control under sustained hydrostatic load as conventional reinforcing steel.
Outside the enclosed warehouse environment, intermodal container yards and external hardstands combine low flexural reinforcement ratios with very high localized wheel contact pressures, and the macrofibre is introduced to maintain aggregate interlock across early shrinkage cracks rather than to replace dowelled load transfer. SikaFiber 154 is batched at 4–6 kg/m³ in fixed-form or laser-screed pavements of 180–250 mm thickness, with entrained air held at 4–7% where freeze-thaw exposure governs. Slump is controlled between 80–120 mm for fixed-form placement to avoid edge slumping at the form face, and the concrete is discharged directly onto the subbase to prevent fibre segregation during long chute drops from the truck mixer. Dowel baskets are placed at saw-cut contraction joints at spacings of 4.5–6 m, because the fibre does not eliminate the need for mechanical load transfer at joint openings greater than 0.9 mm. The hardening phase uses spray-applied evaporation retarder or curing compound to prevent plastic shrinkage cracking in the first 6 h; field records from hardstand placements during hot, low-humidity shifts show that plastic cracking is reduced when the fibre is supplemented by monomolecular curing film rather than by increased water addition. Compliance for design references ACI 330R-08 and ACI 360R-10, fibre conformance follows ASTM C1116/C1116M, and acceptance testing uses ASTM C1399/C1399M for residual strength. Terminal product types include laden container stack yards, reach stacker operating aisles, truck transfer stations, waste transfer hall aprons, and bus depot aprons where diesel spill resistance and high wheel-load repetition are the dominant service conditions.
| Regulatory or design reference | Application boundary | Test or classification method |
|---|---|---|
| ASTM C1116/C1116M | Type III synthetic macrofibre | Fibre conformance classification |
| EN 14889-2:2006 | CE marking for polymer fibres | Product conformity under CPR |
| ACI 330R-08 | Parking and hardstand pavement design | Joint load transfer design |
| ASTM C1399/C1399M | Residual flexural strength of fibre-reinforced concrete | Average residual strength |
Because trapezoidal steel deck composite floors restrain plastic settlement over the troughs, the concrete topping develops plastic settlement cracks within the first 24 h if no crack-control fibre is present. SikaFiber 154 is used at 3–5 kg/m³ in toppings of 75–120 mm above the top of the steel deck flute, with 9.5 mm maximum aggregate size to maintain pumpability through 125 mm boom lines. The mix is proportioned to a slump of 130–180 mm, and the fibre is added at the plant to the aggregate before water, not on site, to avoid non-uniform distribution in small batch trucks. The downstream placing process sequences the pump discharge in a continuous ribbon across the deck, immediately followed by a vibrating screed and then a check for excessive deck rebound; over-vibration of composite deck toppings has been observed to drive paste into the flute valleys and leave fibre-rich paste ridges over the crown of the deck profile. Compliance for the composite slab system references EN 1994-1-1 for steel-concrete composite design and SDI C-2017 for deck profile and minimum topping thickness, while the fibre conformance is covered under ASTM C1116/C1116M. Terminal product types include high-rise office tower composite floors, hospital mezzanine slabs, data centre raised-floor toppings, and podium decks where deflection control under live load governs the steel deck span rather than the macrofibre dosage. The operational boundary is that the macrofibre does not replace welded wire mesh where the deck profile relies on mesh for fire-rated load capacity, and published data for SikaFiber 154 in fire spalling-specific formulations is limited.
At a dosage of 4 kg/m³, early-age thermal restraint in a cut-and-cover tunnel wall is not governed by flexural toughness but by crack width. SikaFiber 154 is specified at 3–4 kg/m³ in cast-in-place wall sections to reduce the width of early-age thermal and shrinkage cracks, while the main flexural and distribution reinforcement remains fully designed to ACI 350R or EN 1992-3. The production process requires the fibre to be batched into the central mixer after aggregate and before water, then mixed for 90–120 s wet after the addition of the superplasticizer to disperse the macrofilament uniformly across the batch. Wall pours are typically limited to vertical lifts of 3–4 m and horizontal lengths of 10–15 m, with insulation applied to the form face during the first 72 h to maintain the maximum internal-to-surface temperature differential below 20 °C. Cube and cylinder compressive strength tests follow ASTM C39/C39M or EN 12390-3, while residual flexural strength verification for the fibre-reinforced mix uses ASTM C1399/C1399M at the same age as the structural acceptance specimens. Terminal product types include cut-and-cover tunnel side walls, wastewater treatment basin walls, below-grade parking perimeter walls, and canal overflow chamber walls. The operational boundary is that SikaFiber 154 does not replace waterbars, joint profiles, or conventional reinforcement in watertight structures, and the dosage cannot be increased above 4 kg/m³ without a corresponding adjustment to the mix viscosity and formwork pressure during casting.
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SikaFiber 154 is a polypropylene macro fiber for use as secondary reinforcement in concrete. The product is supplied as a monofilament with a nominal length of 54 mm, an equivalent diameter of 0.8 mm, and an aspect ratio of 67.5. At a published specific gravity of 0.91, a dosage of 1.5 kg/m³ corresponds to approximately 0.165% by volume, while 4.5 kg/m³ corresponds to approximately 0.495% by volume. The material is classified under ASTM C1116/C1116M as a Type III synthetic reinforcing fiber and under EN 14889-2:2006 as a Class II macro-synthetic fiber. Manufacturer-published typical values include a tensile strength of 600 MPa, an elastic modulus of 9.5 GPa, a melting point of 160 °C, and water absorption below 0.01%.
| Property | Typical value | Test method or reference |
|---|---|---|
| Fiber length | 54 mm | Supplier internal caliper |
| Equivalent diameter | 0.8 mm | Supplier internal microscopy |
| Aspect ratio | 67.5 | Calculated from geometry |
| Specific gravity | 0.91 | ASTM D792 |
| Tensile strength | 600 MPa | Supplier internal; ISO 527-1/ISO 527-2 as extruded strand |
| Elastic modulus | 9.5 GPa | ISO 527-1/ISO 527-2 |
| Melting point | 160 °C | ASTM D3418 |
| Water absorption | <0.01% | ASTM D570 |
Unlike micro synthetic fibers, SikaFiber 154 is not primarily a plastic shrinkage crack-control additive. Its 54 mm length and 0.8 mm equivalent diameter place it in the macrofiber range, where the designed function is post-crack toughness, residual flexural strength, and crack bridging after the concrete matrix has begun to crack. Typical application areas include ground-supported floor slabs, composite steel deck slabs, precast elements, tunnel shotcrete, pavement overlays, and concrete toppings. In these applications, the fiber is evaluated by flexural performance tests such as ASTM C1609/C1609M, ASTM C1399/C1399M, or ASTM C1550. The dosage selection is not derived from a single tensile strength value but from the residual strength, toughness, or energy absorption required by the project specification.
Polypropylene is chemically inert in the alkaline cement environment and does not undergo chloride-induced corrosion. For slabs exposed to de-icing salts or marine chlorides, the absence of steel corrosion eliminates the surface rust staining and spalling associated with corroding steel fibers or welded wire mesh. The polymer matrix is also resistant to most salts and to a range of mineral acids at ambient temperature. However, the melting point of 160 °C limits the contribution of the fiber to fire resistance, and the product should not be specified as a fire-protection fiber unless specific fire testing to EN 1992-1-2 or ASTM E119 has established the behavior of the complete concrete mix.
For projects in North America, SikaFiber 154 should be supplied and accepted in accordance with the applicable edition of ASTM C1116/C1116M. For CE-marked supply, EN 14889-2:2006 requires a declaration of performance covering the fiber geometry, tensile strength, modulus, and other declared values. The user should verify that the declaration matches the product batch and that the fiber class is appropriate for the specified exposure and structural use.
The primary difference between welded wire mesh and a synthetic macrofiber is not pre-crack shrinkage restraint but the post-crack load path. Mesh placed in a single plane provides reinforcement only if it remains at the specified height, typically in the upper third of the slab. SikaFiber 154 is distributed in three dimensions during mixing, but the reinforcement is discontinuous and requires crack opening to mobilize tensile stress through fiber pullout. For slabs with joint spacing beyond 5 m or with heavy point loads, the dosage required to produce equivalent crack-width control can exceed 4.0 kg/m³, and published data for this specific configuration is limited. In such cases, jointed plain concrete or conventional deformed reinforcement may be the more predictable system.
Designers evaluating SikaFiber 154 as a mesh replacement should compare the flexural residual strength ratio from ASTM C1609/C1609M or ASTM C1399/C1399M to the moment capacity of the specified mesh area. A welded wire mesh such as 6x6 W2.9/W2.9 provides a defined yield force per metre of width. SikaFiber 154 does not yield in the steel sense. Its post-crack performance is governed by fiber aspect ratio, dosage, matrix compressive strength, fiber orientation, and aggregate interlock. Trial mixes should therefore be tested under ASTM C1550 round panel or beam protocols before full production, and the selected dosage must be shown to meet the specified residual strength at the required deflection limits.
Dosage selection for macro synthetic fiber is a function of the required post-peak performance rather than a single nominal addition rate. Manufacturer literature places SikaFiber 154 in a typical addition range of 1.5 kg/m³ to 4.5 kg/m³. Below 1.5 kg/m³, the fiber count may be insufficient to produce a measurable change in ASTM C1399/C1399M average residual strength in mixes with low paste volume. At a dosage of 3 kg/m³, the theoretical fiber count is approximately 1.2×105 fibers/m³ based on the nominal geometry and density. This high fiber count increases the probability that a propagating crack will intersect a fiber, but the low elastic modulus means the crack-bridging stress is lower than that of a steel fiber at the same crack opening.
Batching order has a measurable effect on fiber distribution. For central mix plants, the bags should be added onto the aggregate feed belt or into the aggregate skip before the initial water charge, which allows the aggregate movement to separate individual fibers. For truck mixers, adding bags to the drum before the final water portion and operating at mixing speed is preferred. A common minimum sequence is 70 revolutions at mixing speed after fiber addition, although longer mixing may be required for dosages above 3 kg/m³. Adding bags to a drum already at agitation speed after all water has been batched has been observed to produce fiber balls, particularly in low-slump concretes with coarse aggregate exceeding 20 mm.
SikaFiber 154 can reduce slump by 10–40 mm at dosages above 3 kg/m³, depending on aggregate shape, paste volume, and admixture type. Workability should be restored with a high-range water reducer conforming to ASTM C494/C494M Type F or Type G, or with a mid-range water reducer, rather than by adding water above the specified water-cementitious ratio. The fiber itself contributes no chemical water demand, but the internal friction of the fiber network reduces flow. In self-consolidating concrete, slump flow may decrease, and the resulting mixture should be rechecked for filling ability and passing ability using ASTM C1611/C1611M and ASTM C1621/C1621M respectively.
Concrete density is only slightly reduced by the addition of low-density polypropylene fiber. At 3 kg/m³, the fiber volume fraction is approximately 0.33%, which is within normal batching tolerance for normal-weight concrete and should not change the structural classification of the concrete. Density measurements under ASTM C138/C138M may show a minor reduction, but the change is generally below the threshold that would require redesign of formwork or dead-load assumptions.
The difference between SikaFiber 154 and hooked-end steel fiber is primarily fiber stiffness. Steel has an elastic modulus of approximately 200 GPa; SikaFiber 154 has an elastic modulus of 9.5 GPa. At equivalent volume fractions, steel fiber provides higher post-crack flexural strength in ASTM C1609/C1609M tests. However, at equivalent mass dosage, SikaFiber 154 provides a much higher fiber count because of the density difference: 0.91 for polypropylene versus 7.85 for steel. This does not close the stiffness gap, but it improves crack spacing control and handling safety. The macro synthetic fiber does not corrode, does not stain the concrete surface with rust, and does not present the same puncture hazard during placement as loose steel fibers.
| Parameter | SikaFiber 154 | Hooked-end steel fiber | Polypropylene microfiber |
|---|---|---|---|
| Length | 54 mm | 35–60 mm | 6–19 mm |
| Equivalent diameter | 0.8 mm | 0.5–1.0 mm | 0.02–0.30 mm |
| Specific gravity | 0.91 | 7.85 | 0.91 |
| Tensile strength | 600 MPa | 1000–2000 MPa | 300–600 MPa |
| Elastic modulus | 9.5 GPa | 200 GPa | 3.5–9.5 GPa |
| Primary role | Post-crack toughness in concrete | Post-crack strength and stiffness | Plastic shrinkage crack control |
Compared with polypropylene microfibers of 6–19 mm length, SikaFiber 154 is not designed for early-age plastic shrinkage protection. Microfibers disperse in the paste fraction at dosages as low as 0.6 kg/m³ to 1.0 kg/m³ to control bleed and settlement cracking. SikaFiber 154 at those dosages would be below the threshold for macrofiber crack bridging and should not be specified for plastic shrinkage control alone. Conversely, a microfiber cannot provide the post-crack beam or panel toughness associated with longer macrofibers.
Long-term serviceability must be considered. Polypropylene exhibits viscoelastic creep under sustained load, and its modulus may decrease with increasing temperature. In applications where the fiber is expected to carry sustained tension across cracks, creep deformation may increase crack width over time. Published data for this specific configuration is limited, so the design should not rely on the long-term creep resistance of SikaFiber 154 without project-specific testing. Sustained service temperatures above 80 °C may reduce fiber stiffness and should be evaluated before use in continuously heated structural elements.
Chemical compatibility with conventional concrete admixtures is generally acceptable, but the product should not be considered compatible with concentrated oxidizing acids or aromatic hydrocarbon solvents at elevated temperatures. Such exposure is outside the intended concrete application. In applications requiring a hard trowelled finish, the presence of macro fibers may produce visible surface fibers, and a test panel should be placed to verify that the specified finishing technique can achieve the required surface quality without excessive fiber exposure.
