| HS Code | 858017 |
| Material | Polypropylene |
| Fiber Type | Macro synthetic fiber |
| Form | Twisted bundle |
| Length | 50 mm |
| Diameter | 0.8 mm |
| Aspect Ratio | 63 |
| Tensile Strength | 570 MPa |
| Elastic Modulus | 9 GPa |
| Specific Gravity | 0.91 |
| Density | 0.91 g/cm³ |
| Melting Point | 160 °C |
| Alkali Resistance | Excellent |
| Water Absorption | Nil |
| Chemical Resistance | Excellent |
| Corrosion Resistance | Non-corrosive |
| Suggested Dosage | 3 to 8 kg/m³ |
| Color | Gray |
As an accredited MasterFiber MAC 100 Plus - Macro Synthetic Fiber factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | MasterFiber MAC 100 Plus is packaged in 10 lb (4.5 kg) moisture-resistant bags, with 50 bags per pallet for concrete reinforcement. |
| Container Loading (20′ FCL) | 20′ FCL loaded with palletized bags of MasterFiber MAC 100 Plus macro synthetic fibers, securely strapped and shrink-wrapped for transport. |
| Shipping | MasterFiber MAC 100 Plus – Macro Synthetic Fiber is typically supplied in moisture-resistant bags or cartons, palletized and shrink-wrapped. Ship as non-hazardous, non-regulated cargo. Store dry; avoid direct sunlight, moisture, and extreme heat. No special DOT/IMDG/IATA/ADR labels required. Handle with normal warehouse equipment; keep packaging sealed until use. |
| Storage | Store MasterFiber MAC 100 Plus in a dry, cool, well-ventilated area, away from direct sunlight, heat, sparks, and open flames. Keep original packaging sealed and elevated on pallets to prevent moisture, dirt, or chemical contamination. Avoid excessive stacking. Maintain good housekeeping. Shelf life is generally stable when stored properly; rotate stock and inspect for damage before use. Follow SDS and local regulations. |
| Shelf Life | Shelf life is indefinite when stored in original, unopened packaging in a dry, covered area, protected from direct sunlight and moisture. |
In ground-supported slab-on-grade construction, MasterFiber MAC 100 Plus is introduced into ready-mixed concrete as a replacement for light-gauge welded wire mesh or as a supplement to joint-armoring and load-transfer systems. The product qualification path is EN 14889-2:2006 Class II for macro synthetic fibers intended for structural use, while the U.S. specification basis is ASTM C1116/C1116M-10a Type III. Floor layout verification uses the F-number protocol of ASTM E1155-20, and point-load racking calculations follow ACI 360R-10 in conjunction with TR34 4th edition for slab-on-grade design. The dosage envelope for this scenario is 2.5 kg/m³ to 5.0 kg/m³; dosages below 2.0 kg/m³ fail to sustain residual flexural capacity after saw-cut formation because the fiber count per unit fracture surface drops below the threshold needed for post-crack moment transfer. On production lines, the batching sequence has been refined after observing fiber balling when whole bags were discharged into dry aggregate before water; the corrected sequence charges coarse aggregate and 50% of batch water first, followed by the fiber package, cement, and remaining water. A 1.0 m³ twin-shaft compulsory mixer with a mixing time extension of 5 s/kg/m³ beyond the conventional 35 s cycle provides uniform dispersion without measurable balling. Slump at discharge is maintained at 140 mm ± 20 mm because macro synthetic fiber reduces paste mobility; the target air content is 1.5% to 3.0% for non-air-entrained interior slabs. Finishing with a ride-on laser screed at 1.2 m/min to 1.8 m/min is followed by bull floating and power troweling only after surface bleed water has dissipated; early troweling before the fiber is fully subsumed by the paste produces surface fuzzing and requires subsequent sanding. Joints are saw-cut within 6 h to 18 h after final set at a depth of 1/3 of slab thickness. Terminal product types include distribution warehouse slabs with single- and double-deep selective pallet racking, cross-dock terminals with frequent forklift turning, automated guided vehicle logistics floors, and mezzanine slabs where point loads exceed 4,500 kg per leg. A compliance matrix for this scenario is provided below.
| Standard or code | Scope | Applied boundary in this scenario |
|---|---|---|
| EN 14889-2:2006 | Class II macro synthetic fiber for structural concrete | CE marking and manufacturer performance declaration |
| ASTM C1116/C1116M-10a | Type III macro synthetic fiber specification | Fiber material acceptance in U.S. project specifications |
| ASTM C1399/C1399M-10 | Residual flexural strength using beam test | Post-crack strength qualification for slab mix acceptance |
| ASTM E1155-20 | F-number floor flatness and levelness | Finished slab tolerance verification |
| TR34 4th edition | Concrete industrial ground floors | Racking point load and joint spacing design |
During underground excavation, the fiber dosage in wet-mix shotcrete is governed less by slump than by post-crack energy absorption measured on sprayed test panels under EN 14488-5:2006 at a central deflection of 25 mm. The governing shotcrete specification is EN 14487-1:2005, and the fiber is qualified under EN 14889-2:2006 Class II. For MasterFiber MAC 100 Plus in a 0.45 water-to-cementitious ratio shotcrete with 420 kg/m³ cement, 30 kg/m³ silica fume, and 4% to 7% alkali-free accelerator by weight of cement, the typical dosage range is 3.5 kg/m³ to 6.0 kg/m³. The lower bound corresponds to energy absorption class E700 in temporary crown support, while the upper bound is applied to permanent single-shell linings requiring class E1000 and reduced crack spacing under rock mass displacement. Batching for wet-mix shotcrete is executed in a high-shear colloidal mixer or a twin-shaft mixer of 1.0 m³ minimum capacity; fiber is added after cement slurry and before final water adjustment, with mixing time extended by 8 s/kg/m³ because the high paste content increases clumping risk. Pumping is performed by a piston-type shotcrete machine with discharge pressures between 60 bar and 80 bar and output rates of 6 m³/h to 12 m³/h. Production-scale wet-mix operations have recorded pump pressure spikes above 85 bar when fiber dosage exceeds 6.5 kg/m³ in silica fume mixes; the pressure rise is caused by increased plastic viscosity and requires stroke volume reduction on the shotcrete pump. Sprayed application uses a robotic arm or hand nozzle with nozzle distance of 0.5 m to 1.5 m from the substrate and air flow of 8 m³/min to 12 m³/min; rebound of macro synthetic fiber is typically lower than steel fiber but increases when nozzle angle departs more than 30° from perpendicular. Layering in thicknesses of 50 mm to 150 mm per pass prevents sagging on overhead profiles. Terminal product configurations include drill-and-blast tunnel crown and sidewall linings, portal slope stabilization, vertical shaft linings, and cross-passage sealing bulkheads.
When a precast plant runs dry-cast and wet-cast sides simultaneously, macro synthetic fiber can be dosed without changing the zero-slump packing sequence in dry-cast production, provided the fiber is added to the free-fall mixer after aggregate and before cement. For precast drainage units, MasterFiber MAC 100 Plus is qualified under ASTM C76-22 for reinforced concrete culvert, storm drain, and sewer pipe and under EN 1916:2002 for concrete pipes and fittings; the fiber does not replace steel reinforcement in structural pipe classes above wall thickness 60 mm but contributes to early crack-width control and handling damage resistance. Addition rates range from 3.0 kg/m³ to 6.5 kg/m³; dry-cast mixes at 0.30 to 0.36 water-to-cement ratios use the lower half of that range, while wet-cast box culverts with slump of 90 mm ± 20 mm use the upper half. The production process for dry-cast manhole bases consists of a twin-shaft compulsory mixer discharging into a hopper-fed squeeze-form machine with vibration at 50 Hz to 60 Hz and immediate demolding after 90 s to 180 s; wet-cast culverts are cast externally in steel battery molds and compacted by external high-frequency vibrators at 8,000 rpm to 12,000 rpm. Curing is steam-based at 60 °C to 70 °C for 8 h to 12 h, after which the units are stacked and tested for cracking under three-edge bearing. Terminal products include storm drainage culverts, catch basin bases, manhole risers and cones, box culverts, and trench sections. The operational boundary is that fiber dosage above 7.5 kg/m³ in dry-cast mixes reduces compactability and increases surface porosity in the immediately demolded green product.
Container terminal pavements are designed for static and dynamic wheel loads from reach stackers, straddle carriers, and terminal tractors with wheel loads up to 150 kN. In this application, MasterFiber MAC 100 Plus is batched at 2.5 kg/m³ to 4.0 kg/m³ into a concrete with a 35 MPa to 45 MPa specified compressive cylinder strength at 28 days; the lower dosage is used in lightly loaded service lanes and the upper dosage in rubber-tyred gantry crane travel lanes where repetitive shear reversals occur at panel corners. The governing compliance references include ACI 330R-08 for concrete parking lots and site paving, ASTM C1550-20 for flexural toughness of fiber-reinforced concrete round panels, and ASTM E1274-18 for dowel alignment. Macrosynthetic fiber does not replace dowel bars in joints with heavy dynamic loading; dowels remain mandatory at construction joints in pavements thicker than 250 mm. Slipform paving is carried out with an electronically controlled paver maintaining a travel speed of 1.0 m/min to 1.5 m/min and internal vibration frequency of 9,000 vpm to 12,000 vpm. The fiber is introduced into a central-mix plant with batch capacity not less than 2.0 m³, and the concrete is discharged into a spreader placer ahead of the paver. Joint saw-cutting follows within 8 h to 16 h after slab finishing, with joint depth maintained at 1/4 to 1/3 of slab thickness. The finished surface receives a sprayed curing compound conforming to ASTM C309. Terminal product types include container stacking lanes, rubber-tyred gantry crane corridors, intermodal rail loading aprons, and airport hardstandings for ground support equipment. A known production failure is edge spalling at early-age contraction joints when the saw-cut is delayed beyond 18 h and fiber-reinforced concrete has developed tensile restraint; therefore, joint timing is specified as a hard cutoff in the construction sequence.
Because organic acid exposure and mobile equipment loads occur in the same working plane, dairy manure handling slabs, silage pads, and digestate storage areas require both chemical resistance and crack-bridging capacity. MasterFiber MAC 100 Plus is used at 3.0 kg/m³ to 5.0 kg/m³ in concrete specified under ACI 350-20 with maximum water-to-cementitious ratio of 0.45 and minimum design crack width of 0.20 mm. The concrete is batched in a central-mix plant; the fiber is discharged after 70% of aggregate and water have been loaded, with total mixing time extended by 4 s/kg/m³. Slump is maintained at 120 mm ± 25 mm, and placement is executed by chute or boom pump into slab forms with thicknesses from 150 mm to 250 mm. Consolidation by hand screed and internal vibrator is followed by bull floating and a broom finish to provide slip resistance for hoof or tire traffic. Curing under ACI 308R-16 for 7 days minimum is required because partial drying at the surface increases permeability to silage leachate and manure acids. Terminal products include drive-over slurry channels, dairy cow transfer alleys, silage clamp floors, anaerobic digester feedstock aprons, and waste transfer station approach slabs. The operational boundary is that fiber addition above 6.0 kg/m³ in these mixes reduces surface finishability under hand screeding and produces excessive fiber exposure at broom-finished surfaces; therefore, higher dosages require the use of vibrating truss screeds.
The residual tensile capacity required in watertight concrete derives from the need to limit crack opening at service loads rather than from post-crack structural reinforcement. In potable water reservoirs, wastewater treatment tanks, and fire water basins, MasterFiber MAC 100 Plus is incorporated at 3.0 kg/m³ to 4.5 kg/m³ into concrete conforming to EN 1992-3:2006 and ACI 350-20, with polyvinyl chloride waterstops at construction joints and hydrophilic strips at pipe penetrations. The fiber qualification path is EN 14889-2:2006 Class II and ASTM C1116/C1116M-10a Type III; post-crack performance is monitored through ASTM C1399/C1399M-10 residual strength testing on qualification mixes. The production process uses a central-mix plant with a batching sequence of coarse aggregate and 50% water first, then cement, fiber, and remaining water; mixing is extended by 6 s/kg/m³. Placement is executed with a boom pump at 25 m³/h to 40 m³/h into formwork with a slump of 150 mm ± 25 mm. Internal vibrators spaced at 300 mm to 450 mm and operated at 10,000 vpm to 12,000 vpm ensure consolidation around waterstops and embedded piping. Curing follows ACI 350-20 moist curing conditions for 7 days minimum; wet burlap and curing compound conforming to ASTM C309 are applied when forms are removed. Terminal product types include potable water clearwells, sequencing batch reactor tanks, equalization basins, and fire suppression water storage cells. The operational boundary is that macro synthetic fiber does not substitute for steel reinforcement in sections thicker than 400 mm where flexural stress exceeds the residual capacity; published data for this specific configuration is limited, and structural design is based on conventional steel reinforcement with fiber used as crack-width control only.
Competitive MasterFiber MAC 100 Plus - Macro Synthetic Fiber prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8618112911328 or mail to sales1@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8618112911328
Email: sales1@liwei-chem.com
Flexible payment, competitive price, premium service - Inquire now!
MasterFiber MAC 100 Plus is a macro synthetic fiber for concrete, produced as discrete polyolefin monofilaments in collated bundles that disperse into individual filaments during mixing. The fiber is classified as Type III synthetic macro fiber under ASTM C1116/C1116M and as Class II polymer fiber under EN 14889-2. Product geometry is generally declared as 54 mm nominal length and 0.5 mm equivalent diameter, giving an aspect ratio above 100 and a fiber count on the order of 105 fibers per kg at a density of 0.91 g/cm³. Tensile strength for this class is commonly reported between 550 MPa and 650 MPa, with a tensile modulus below that of steel. The fiber is used in slab-on-grade, precast concrete, sprayed concrete, and pavement applications to provide post-crack residual capacity, crack-width control, and impact energy absorption. Function is not equivalent to continuous deformed steel reinforcement; design must follow fiber-specific test methods.
The manufacturer’s current technical data sheet should be used for batch-specific values because geometry and tensile performance may shift with production lot. Typical dosage rates for slab applications are between 2.5 kg/m³ and 5.0 kg/m³; dosages below 2.0 kg/m³ are generally insufficient for consistent macro post-crack action.
Steel fiber has a density of approximately 7.85 g/cm³ and a tensile yield strength of 1,000–1,500 MPa. MasterFiber MAC 100 Plus has lower density and lower tensile strength, but its lower mass allows more individual fibers per kg at equal dosage. This shifts the reinforcement mechanism from a smaller number of stiff steel filaments to a denser network of lower-modulus synthetic filaments. Welded wire mesh is a planar steel grid placed in the upper or mid-depth of a slab; the fibers are dispersed in three dimensions from the batching stage. Under ASTM C1609/C1609M, steel fiber often produces higher residual strength at the same dosage, while synthetic fiber can reduce corrosion-related concerns and equipment wear. The two materials are not interchangeable without adjusting dosage, slab thickness, and joint layout.
The product is non-magnetic and non-conducting; no galvanic coupling occurs. This property is relevant in floors with embedded electrical rails, conductive flooring systems, or sensitive electronic equipment. However, the polymer’s lower elastic modulus contributes to larger deflection under sustained post-crack loading.
In a 2.0 m³ twin-shaft batch mixer, the fiber is added after the coarse aggregate and before water. One full bag should be added at the conveyor or charging gate, not gradually dribbled, because gradual addition can create partially wetted clumps that require high-shear dispersion. A post-fiber mixing time of 4–5 minutes at 12–18 rpm is generally adequate at 3.0–5.0 kg/m³. In slower helical-blade mixers, additional 2–3 minutes may be required. Slump loss at 4.0 kg/m³ is usually less than 30 mm; mix adjustment should use a polycarboxylate ether high-range water reducer rather than additional water. Site addition in a truck mixer is permitted only if drum rotation continues at high speed for 5–7 minutes and the concrete discharge temperature does not exceed 25 °C during extended mixing.
Placement of fiber-reinforced concrete through pump lines can produce anisotropic fiber orientation, with more fibers aligned parallel to flow. The post-crack residual strength measured in beams cut from different orientations may vary; design values should be based on the weakest orientation unless placement is controlled to reduce orientation. Pump line diameter should be at least 100 mm, and pump pressure may increase by 5–10% at dosages above 4.0 kg/m³. Field data from truck-pumped slabs indicate variability, but published studies specific to this product configuration are limited.
The post-crack flexural performance of MasterFiber MAC 100 Plus is not a fixed value; it is a function of dosage, concrete matrix strength, aggregate interlock, and fiber orientation. Under ASTM C1609/C1609M, beams of 150 × 150 × 500 mm are loaded in third-point flexure, and residual strengths f1 and f3 are recorded at net deflections of span/600 and span/150. Under EN 14651, a notched beam of 150 × 150 × 550 mm is tested at crack mouth opening displacement levels of 0.5 mm, 1.5 mm, 2.5 mm, and 3.5 mm. The ratio of f3 to f1 can decrease in high-paste or low-aggregate mixes because the dominant failure mode shifts from fiber pullout to matrix crumbling. Higher dosage from 3.0 kg/m³ to 7.5 kg/m³ improves post-crack residual strength but also reduces slump and may alter void spacing if not properly compacted. Published data for this specific fiber in high-alkaline pore solution is limited for some performance classes; project-specific trial beams are necessary for code-level validation.
In jointless floor construction, the product is used at 3.0–4.5 kg/m³ to distribute drying shrinkage strains into microfractures and to protect saw-cut joints from spalling. Joint spacing may be increased from 4.5 m to 9–12 m only if subbase friction is low, the slab thickness is sufficient, and curling analysis confirms the reduced joint count. The fiber does not eliminate drying shrinkage or the need for wet curing. Concrete placed with a laser screed can be struck off without mesh interference, but timing of finishing is governed by bleed water and surface set, not by fiber presence. At 4.5 kg/m³, the fiber may delay closure of surface tears during troweling in low-bleed concrete; the operator should monitor surface condition and apply finishing aids only where compatible with fiber and floor hardeners.
When welded wire mesh is omitted, the structural design transfers from a steel cross-sectional area model to a performance-based macro fiber dosage. The design should specify concrete compressive strength, slab thickness, subgrade modulus, and rack-load magnitude. The minimum residual flexural strength is compared with values from ASTM C1609/C1609M or EN 14651. Welded wire mesh is often placed as a single plane, while the macro fiber provides reinforcement throughout the slab depth; this changes crack-width control but does not eliminate the need for construction joints, isolation joints, and column isolation. The absence of mesh reduces installation labour and the risk of wire chair congestion, but a structural engineer must verify that fire rating requirements and anchorage at penetrations remain satisfied.
In wet-mix sprayed concrete, MasterFiber MAC 100 Plus is batched at 4–6 kg/m³, and the collated bundles break apart during high-velocity application. Energy absorption is evaluated with ASTM C1550 round panel tests; the specified energy class is achieved only when batching, air volume, and nozzle distance are controlled during preconstruction trials. Rebound can differ from steel fiber because the lower particle density alters trajectory and momentum; nozzle operators may adjust air flow by 10–20% compared with steel fiber shotcrete. In precast elements, lower dosages of 2.5–4.0 kg/m³ improve edge and corner crack control during stripping and transport. The fiber does not replace lifting anchors, connection reinforcement, or structural continuity bars.
The following table identifies the test designations commonly associated with macro synthetic fiber compliance and quality control. The manufacturer’s declaration should be verified against the current batch documentation.
| Standard / Designation | Scope and Test Application |
| ASTM C1116/C1116M Type III | Synthetic macro fiber classification for concrete and shotcrete. |
| EN 14889-2 Class II | Polymer fiber for structural or semi-structural use under the Construction Products Regulation. |
| ASTM C1609/C1609M | Flexural performance of fiber-reinforced concrete; residual strengths f1 and f3. |
| EN 14651 | Notched beam flexural test; limit of proportionality and post-crack residual flexural tensile strength. |
| ASTM C1550 | Round panel energy absorption for fiber-reinforced shotcrete. |
| ISO 9001 | Batch production quality management and traceability. |
The fiber remains stable in concrete pore solution with pH between 12.5 and 13.5 because the polyolefin backbone has no hydrolysable ester linkage. Water absorption is typically below 0.1%, so the fibers do not swell and create internal pop-outs. In freeze-thaw exposure, the presence of macro synthetic fiber does not create additional void spacing; air entrainment remains mandatory under ASTM C260/C260M or EN 934-2 for frost-resistant concrete. Published data on salt scaling with this specific fiber is limited, and existing scaling limits for the concrete mixture remain applicable. The fiber does not contribute chlorides or sulfate ions into the mix, which simplifies placement where total chloride limits under EN 206 or ACI 318 govern.
MasterFiber MAC 100 Plus should not be used as a direct replacement for deformed steel reinforcing bars in beams, columns, structural walls, or any element where continuous tensile reinforcement is required by code. The fiber does not provide the same post-crack stiffness as steel fiber at equal mass addition; at the same dosage, steel fiber typically yields higher residual flexural strength, while synthetic fiber provides more individual filaments and no corrosion risk. Published data for punching shear in elevated slabs reinforced only with macro synthetic fiber is limited; punching shear and shear friction design should not rely on fiber action unless full-scale testing is performed. The polymer melting temperature is near 162 °C, and sustained service temperatures should remain below 80 °C. The fiber does not replace air entrainment in freeze-thaw exposure, and it does not reduce the required cover to steel reinforcement in chloride-bearing concrete. Incompatibility is generally low because the polyolefin is inert, but the fiber should not be exposed to strong oxidizers or organic solvents before mixing. Admixture interaction with polycarboxylate ether superplasticizers and air-entraining agents is generally acceptable, but cement chemistry and aggregate fines may require a trial batch.
Precast tunnel segments and thin-walled concrete elements dosed at 3.0–4.0 kg/m³ show reduced demolding spalling when the concrete is stripped at the specified compressive strength. However, early-age strength gain is controlled by mix design, curing temperature, and moisture retention, not by fiber addition. In indoor slabs placed at relative humidity below 40%, plastic shrinkage protection still requires evaporative control and proper finishing; the macro fiber is not a substitute for surface moisture management.
