HTM® Twist
Twisted Bundle Macro Synthetic Fibers
Twisted bundle monofilament design
Since 2002, we have specialized in concrete crack resistance, waterproofing, and anti-corrosion technologies.
Twisted Macro Synthetic Fiber for Concrete
Twisted Bundle Reinforcement for Concrete and Shotcrete
HTM® Twist is a twisted-bundle macro synthetic fiber designed for concrete and shotcrete applications where crack bridging, toughness and post-crack performance are important selection criteria. Product suitability should be confirmed according to dosage, required test performance and project specifications.
What Are HTM® Twist Macro Synthetic Fibers?
HTM® Twist is an engineered twisted-bundle macro synthetic fiber developed for concrete and shotcrete applications requiring distributed crack bridging, toughness and post-crack performance. Its twisted geometry is designed to increase mechanical interaction with the cement matrix compared with a straight fiber form.
Typical applications include shotcrete, tunnel linings, industrial floors, pavements, precast concrete and selected infrastructure projects. Final product selection should be based on dosage, required residual performance, constructability and available test evidence.
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Technical Specifications
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Material: PP or PP+PE
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Type: Twisted-Bundle Macro Synthetic Fiber
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Specific Gravity: 0.91–0.92 g/cm³
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Diameter: 0.30–0.69 mm
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Available Lengths: 32 / 40 / 50 mm
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Tensile Strength: 450–620 MPa
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Elastic Modulus: 5–7 GPa
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Melting Point: Approx. 160°C
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Color: Gray or White
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Chemical Resistance: Refer to current TDS
Refer to the current HTM® Twist Technical Data Sheet for grade-specific values, tolerances and test methods.
Standards & References
HTM® Twist technical documentation references applicable requirements of ASTM C1116/C1116M and ASTM D7508/D7508M, where applicable.
How HTM® Twist Works in Concrete
The twisted-bundle geometry of HTM® Twist is designed to increase mechanical interaction with the surrounding cement matrix. When properly dispersed, the fibers bridge developing cracks and contribute to toughness and residual load transfer after cracking.
Actual performance depends on fiber geometry, dosage, concrete mix, application, test method and project requirements.
Enhanced toughness and durability precast
Crack control in concrete pavements
Key Benefits of HTM® Twist
Twisted-Bundle Geometry
Designed to improve mechanical interaction with the cement matrix.
Crack-Bridging Reinforcement
Distributed macro fibers can bridge cracks and contribute to residual load transfer after cracking.
Toughness and Residual Performance
Designed for applications where post-crack toughness or residual performance is a project requirement.
Non-Corrosive Polymer Fiber
Does not rust like steel reinforcement.
Practical Batching
Added directly to the concrete or shotcrete mix using the recommended batching sequence.
Concrete and Shotcrete Applications
Suitable for evaluation in cast concrete, pumped concrete and selected shotcrete systems.
Recommended Applications of HTM® Twist
Shotcrete and Tunnel Linings
For projects requiring distributed macro fiber reinforcement, toughness or energy-absorption performance, subject to project test requirements.
Industrial Floors and Slabs
For slabs-on-ground and industrial floors where macro synthetic reinforcement is specified and required residual performance is verified.
Pavements and Hardstands
For selected pavement and hardstand applications requiring distributed crack bridging and post-crack performance.
Precast and Infrastructure Concrete
For selected precast and infrastructure applications where fiber distribution, corrosion resistance and post-crack performance are relevant.
Dosage and Mixing Guidelines
HTM® Twist dosage should be selected according to the required residual performance, concrete mix, application and applicable test method. A generic dosage should not be treated as sufficient evidence for all projects.
Item
Guidance
Typical Dosage Range
1.8–4.5 kg/m³
Typical Reference
3.0 kg/m³
Addition
Add during batching or with aggregates
Mixing
Allow sufficient mixing for uniform distribution
Placement
Follow project-approved FRC placement procedures
Verify dosage and mixing instructions against the current HTM® Twist TDS and project performance requirements.
Packaging and Supply Options
Available Lengths
32 / 40 / 50 mm — verify against current TDS.
Packaging
Bulk and project-specific dosing packs where available.
Distributor / OEM Options
Private-label or distributor packaging where commercially supported.
Technical Support
Product selection and dosage guidance based on project requirements.
Require Higher Residual Strength for Heavy-Duty Slabs?
For applications where standard twisted macro synthetic fibers may not meet strict structural flexural strength or ASTM C1609 performance criteria, Rimix™ 3D offers an advanced macro reinforcement option. Review its technical data and test evidence to evaluate suitability for your project.
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At PIONEER, we’re committed to delivering the best and most relevant information to support your needs. Reach out to us for more details and discover the benefits we offer:
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Factory-Direct Pricing
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Expert Guidance on Fiber Applications
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Customized Solutions for Your Project
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Fiber Samples Available for Testing
Privacy Assurance: We respect your privacy and will never share your information.
Why Choose Us?
Proven Expertise & Greater Savings
24 years of focus
on fiber reinforcement solutions.
5,000 tons yearly
from advanced manufacturing.
20+ countries served
with global product distribution.
1,000 projects proven
in diverse applications worldwide.
Why Choose PIONEER® Technologies
1. Product-Specific Technical Documentation
Technical data, dosage information and available test documentation are provided by product.
2. Manufacturing Capability
HPM® PP is supplied through PIONEER® concrete fiber manufacturing and quality-control systems.
3. International Supply Experience
PIONEER® supplies concrete fiber products across multiple international markets.
4. Technical Support
Product selection, dosage guidance and technical documents are available for project-specific requirements.
26,500m² production base
Advanced fiber dispersibility
Exceptional tensile strength
FAQ
HTM® Twist is a twisted-bundle macro synthetic fiber designed for concrete and shotcrete applications requiring crack bridging, toughness and post-crack performance.
The twisted-bundle profile is designed to increase mechanical interaction with the concrete matrix and support crack bridging and residual load transfer after cracking.
Dosage depends on required residual performance, concrete mix, application and test method. Refer to the current HTM® Twist TDS and project-specific performance data.
It may be considered in selected applications where project design, test results and approvals support substitution. It should not be treated as a universal replacement.
It can be evaluated for shotcrete and tunnel applications where pumping, fiber distribution, energy absorption and required post-crack performance have been verified.