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ECOCRETE™ Hooked End Steel Fiber

High-toughness reinforcement for crack control, flexural strength and fatigue life.

Hooked end steel fibers for industrial and infrastructure concrete

What is Hooked End Steel Fiber?

Hooked End Steel Fiber is the most widely used steel fiber type. Its hooked tips provide superior pull-out resistance and bond to cement paste, enabling higher toughness and fatigue resistance at practical dosages. Compared with secondary rebar mesh, fiber dosing is fast, compatible with pump/laser screed construction, and can shorten schedules and reduce overall placement cost.

ECOCRETE™ Hooked End Steel Fiber is cut from high-strength steel wire; the mid-section is straight and both ends are bent into hooks for strong mechanical anchorage. It disperses evenly in concrete, controls crack width, and lifts post-crack load capacity—ideal for industrial floors, bridge decks, pavements, tunnels, precast and repairs.

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Lab tensile/adhesion testing of AR glass fibers and cement matrix

Technical Parameter

  • Form: Straight mid-section with hooks at both ends (clean, uniform appearance).
  • Common Length × Diameter Models (examples): J-50/50 (Ø1.0 × 50 mm), J-65/60 (Ø0.92 × 60 mm), J-55/50 (Ø0.9 × 50 mm), J-80/60 (Ø0.75 × 60 mm), J-65/50 (Ø0.77 × 50 mm), J-45/35 (Ø0.77 × 35 mm), J-55/30 (Ø0.54 × 30 mm), J-60/30 (Ø0.50 × 30 mm), J-50/25 (Ø0.50 × 25 mm), J-60/25 (Ø0.40 × 25 mm).
  • Aspect Ratio (L/D): 45–80 (per model).
  • Tensile Strength: ≥ 1000 MPa.
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Lab tensile/adhesion testing of AR glass fibers and cement matrix
Concrete surface before vs after crack control with AR glass fibers

Key Benefits of Hooked End Steel Fiber

  1. Crack Control & Tightness — Bridges plastic/drying shrinkage and service cracks; reduces crack width/density for improved durability.
  2. Toughness & Impact/Fatigue — High pull-out resistance from hooked tips raises post-crack load capacity, impact and fatigue life.
  3. Strong Bonding — Clean, rough steel surface grips cement paste securely.
  4. Good Dispersion & Pumpability — Designed to dose and disperse uniformly without balling; compatible with large-area, laser-screeded floors.
  5. Construction Efficiency — In many crack-control specs, can reduce or replace secondary mesh; simpler workflow and shorter schedule.
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Glossy industrial floor enhanced with hooked end steel fibers and sharp joint edges

Applications of Hooked End Steel Fiber

  1. Building & Precast: housing slabs, precast piles, frame nodes, roof waterproof layers, underground waterproof structures.
  2. Industrial Floors: cut-joint, jointless and seamless floors; pile-supported floors; garage leveling layers; composite deck slabs; rafts; plant roads and pavements.
  3. Pipes: centrifugal, vibration and extruded pipes; pump pipes; steel-lined steel-fiber pressure pipes.
  4. Highways & Bridges: box arches, continuous box girders, bridge decks/overlays; cold-region/airport pavements.
  5. Rail: prestressed mono-block/twin-block sleepers.
  6. Water & Hydropower: abrasion/erosion zones, gates/sluices, spillways, dam face slabs.
  7. Ports & Marine: steel pipe-pile anti-corrosion layers, quay facilities, subsea concrete.
  8. Other: heavy-duty factory/warehouse floors, silos, repair & strengthening, manhole covers, trench grates, underground cable/pipe works.
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Glossy industrial floor enhanced with hooked end steel fibers and sharp joint edges
Worker handling bagged AR-glass fibers in front of stacked inventory

How to Use & Recommended Dosage

  • General slabs / industrial floors: 20–40 kg/m³ (optimize for joint spacing, wheel loads and curl control).
  • Heavy-duty pavements / bridge decks / precast: 30–60 kg/m³ depending on design targets.
  • Shotcrete / repairs: 25–45 kg/m³ (verify pumpability with a trial panel).
  • UHPC / high-performance elements: 1.0–2.0% by volume (engineering design required).

Mixing sequence (cementitious): Aggregates → Hooked End Steel Fiber (dose gradually) → cement → water + admixtures → mix to full dispersion; use superplasticizer to maintain slump/flow.
Design note: Fiber does not replace primary reinforcement where required; follow the structural engineer’s design and codes.

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Packaging & Logistics

  • Packs: 25 kg cartons or composite paper bags.
  • Palletization: 1.5–2.0 t per pallet (typical).
  • 40′ HQ Load: ≈ 24 t (12 pallets × 2 t).
  • Lead Time: 5–10 days (depending on order mix).

Why Ecocrete™

  • Factory-Direct Supply & QC: Stable quality and predictable lead times.
  • Proven Hooked-End Performance: High pull-out resistance and residual strength for slabs, overlays, precast and repairs.
  • Construction Efficiency: Compatible with pump/laser screed workflows; reduces rebar handling in many crack-control specs.
  • Complete Paperwork: COA / SDS / TDS, ISO 9001; project inspection files available on request.
PP fiber extrusion lines forming consistent monofilament
Palletized fiber bags stored in a covered warehouse

FAQs — Hooked End Steel Fiber

Certificates & Test Reports

Every batch is traceable. We provide COA, SDS, TDS, factory ISO9001 and project-specific third-party test reports upon request. Original stamped copies and bilingual versions are available.

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