Fiber Distribution
Fibers disperse throughout the matrix in multiple orientations, creating distributed reinforcement across potential stress and crack paths.
HIGH-PERFORMANCE SYNTHETIC FIBER
Aramid Fiber
High-Strength, Lightweight Fiber for Advanced Reinforcement
POLYVIA™ Aramid Fiber is a high-strength, high-modulus synthetic reinforcement fiber combining low density with excellent thermal resistance. It is designed for concrete, cementitious materials and demanding engineering applications requiring mechanical reinforcement, durability and performance under elevated temperatures.
High Tensile Strength
2250–2750 MPa
High Modulus
125–135 GPa
Low Density
1.44–1.45 Mg/m³
Heat Resistance
200–300°C
WHAT IS ARAMID FIBER?
POLYVIA™ Aramid Fiber is a high-performance para-aramid fiber based on poly-p-phenylene terephthalamide (PPTA), with ≥85% para-position bonds according to the product specification.
Combining high tensile strength, high modulus and low density, the fiber provides lightweight reinforcement for compatible concrete and cementitious systems. Its strong fibrous structure helps distribute tensile stresses and supports reinforcement performance without significantly increasing material weight.
Fiber Type
Para-Aramid Fiber
Chemical Name
Poly-p-phenylene Terephthalamide (PPTA)
Para-Position Bonds
≥85%
Tensile Strength
2250–2750 MPa
Elastic Modulus
125–135 GPa
Density
1.44–1.45 Mg/m³
Elongation at Break
2.7–2.9%
Temperature Resistance
200–300°C
Packing
0.6-2kg/Bag, 10-25kg/Bag, 500kg/pallet
HOW ARAMID FIBER WORKS
How Aramid Fiber Reinforces the Material Matrix
When properly dispersed, Aramid Fiber forms distributed reinforcement throughout the matrix. Its reinforcing mechanism can be understood through four connected stages.
Fiber–Matrix Interaction
Stress within the surrounding matrix is transferred to embedded fibers through the fiber–matrix interface, enabling effective load transfer between the two materials.
Crack Bridging
Fibers intersecting a developing crack remain engaged across the crack plane, helping transfer tensile stress as the crack begins to open.
Stress Redistribution
Bridging fibers transfer stress away from localized crack regions, helping redistribute tensile forces through a broader region of the reinforced matrix.
APPLICATIONS
TRANSPORTATION & INDUSTRIAL INFRASTRUCTURE
Concrete Pavements
For concrete pavement systems requiring distributed Aramid Fiber reinforcement to support crack control, tensile stress distribution and long-term pavement performance.
Bridge Decks
For bridge deck concrete requiring fiber reinforcement to support crack control, tensile stress distribution and performance under repeated service loading.
Airport Runways
For airport runway concrete requiring high-performance distributed reinforcement to support crack control and material performance under demanding loading conditions.
Industrial Floors
For industrial concrete floors requiring distributed fiber reinforcement to support crack control, stress distribution and performance under repeated operational loading.
UNDERGROUND, HYDRAULIC & MARINE INFRASTRUCTURE
Tunnel Engineering
For compatible tunnel linings and cementitious structures requiring high-strength Aramid Fiber reinforcement to support crack control and internal stress distribution.
Mining Engineering
For compatible underground concrete and cementitious systems requiring lightweight distributed fiber reinforcement to support crack control and structural material performance.
Hydraulic Structures
For reservoirs, dams and water-retaining concrete structures requiring distributed fiber reinforcement to support crack control and durable material performance.
Marine & Waterfront Structures
For compatible marine and waterfront concrete structures requiring distributed reinforcement to support crack control and performance under demanding exposure conditions.
KEY PERFORMANCE
POLYVIA™ Aramid Fiber combines high tensile strength, high modulus, low density and elevated-temperature resistance for demanding fiber-reinforced material systems.
High Tensile Strength
Provides high tensile performance to support stress transfer and distributed reinforcement within compatible material systems.
High Elastic Modulus
Provides high fiber stiffness to support stress transfer and deformation resistance within compatible reinforced matrices.
Low Density
Combines low material density with high mechanical performance, providing a favorable strength-to-weight profile for lightweight reinforcement systems.
Temperature Resistance
Provides fiber-level resistance to elevated temperatures within the specified range, subject to exposure conditions and matrix compatibility.
SYSTEM COMPATIBILITY
FORMULATION & PROCESSING
Integrating Aramid Fiber into the Complete Material System
The performance of Aramid Fiber depends not only on the fiber itself, but also on its interaction with the surrounding matrix and processing conditions. Four factors should be evaluated when developing or optimizing a fiber-reinforced formulation.
System Approach
Compatible Matrix → Uniform Fiber Dispersion → Effective Fiber–Matrix Interface → Controlled Processing → Verified Performance
Matrix Compatibility
Matrix composition, rheology and workability influence fiber incorporation, dispersion and overall composite performance. Compatibility should be evaluated within the intended concrete or cementitious system.
Fiber Dispersion
Uniform fiber distribution helps create consistent distributed reinforcement throughout the matrix while minimizing localized fiber concentration or agglomeration.
Fiber–Matrix Interface
Effective stress transfer depends on the interaction between the Aramid Fiber surface and surrounding matrix. Interface behavior should therefore be verified using the actual formulation and application conditions.
Processing Conditions
Mixing sequence, mixing time and equipment should support uniform fiber incorporation and dispersion without adversely affecting mixture consistency or production stability.
TECHNICAL DATA
| Items | Specification |
|---|---|
| Para-Position Bonds | ≥85% |
| Density | 1.44–1.45 Mg/m³ |
| Elongation at Break | 2.7–2.9% |
| Temperature Resistance | 200–300°C |
| Thermal Conductivity | 0.2–0.3 W/(m·K) |
| Elastic Modulus | 125–135 GPa |
| Tensile Strength | 2250–2750 MPa |
| Specific Heat | 1350–1450 J/(kg·K |
| Coefficient of Thermal Expansion | (-4)–(-2) × 10⁻⁶/K |
TECHNICAL DOCUMENTS
Technical Data Sheet — TDS
Product specifications and technical properties.
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Safety Data Sheet — SDS
Safety, handling and storage information.
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Certificate of Analysis — COA
Batch-specific inspection and quality data.
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Application Guide
Guidance for fiber incorporation, mixing, dispersion and application evaluation.
Download ↓FREQUENTLY ASKED QUESTIONS
What is Aramid Fiber? +
Aramid Fiber is a high-performance aromatic polyamide fiber engineered for applications requiring high tensile strength, low weight and dimensional stability. POLYVIA™ Aramid Fiber is a para-aramid fiber based on poly-p-phenylene terephthalamide (PPTA).
What is the tensile strength of POLYVIA™ Aramid Fiber? +
POLYVIA™ Aramid Fiber has a specified tensile strength of 2250–2750 MPa, an elastic modulus of 125–135 GPa, and elongation at break of 2.7–2.9%.
Can Aramid Fiber be used in concrete? +
Yes. Aramid Fiber can be incorporated into compatible concrete, mortar and other cementitious systems as distributed fiber reinforcement. Final performance depends on fiber dispersion, matrix compatibility, fiber–matrix interaction and mix design.
How is Aramid Fiber added to concrete? +
A typical addition sequence is:
Aggregate → Aramid Fiber → Cement → Water → Mixing → Final Water Adjustment
The fiber should be introduced and mixed sufficiently to achieve uniform dispersion throughout the concrete matrix.
How long should Aramid Fiber be mixed? +
For fiber-reinforced mortar and concrete, an additional 30–60 seconds of mixing may be used where required to achieve uniform dispersion. Actual mixing time should be adjusted according to the mixer, batch size and mix consistency.
What temperature can POLYVIA™ Aramid Fiber withstand? +
The specified temperature-resistance range is 200–300°C. Suitability for elevated-temperature applications should be evaluated according to exposure temperature, duration, surrounding matrix and actual service conditions.
What are the typical applications of Aramid Fiber? +
Aramid Fiber can be evaluated for concrete pavements, bridge decks, airport runways, industrial floors, tunnel engineering, underground construction, hydraulic structures, and marine or waterfront infrastructure where distributed fiber reinforcement is required.
How do I select the right Aramid Fiber for my application? +
Selection should consider the matrix system, reinforcement objective, fiber dimensions, dispersion requirements, processing method and service environment. Laboratory or production-scale testing with the actual formulation is recommended before final specification.
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