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Cellulose Fiber

Cellulose fibers used in concrete are eco-friendly, biodegradable, recyclable, and widely available throughout the world compared to other fiber types. Moreover, cellulose fibers exhibit interesting physical and mechanical properties, i.e., low density and well-balanced stiffness, toughness, and strength

Cellulose Fiber is a natural, flocculent organic fiber derived from plant-based materials—primarily wood, bark, or leaves—through a combination of chemical purification and mechanical processing. Wood-based cellulose fiber is the most commonly used variant, valued for its eco-friendly properties and performance-enhancing effects in composite materials.

Widely applied in concrete mortar, gypsum products, wood pulp sponges, and asphalt pavements, cellulose fiber also serves as a key additive in medium-density fiberboard (MDF) and home building materials. When incorporated into insulation materials, its easy dispersion forms a three-dimensional network structure, and its ability to absorb 6–8 times its own weight in water delivers multiple benefits: improving workability, anti-slip performance, and construction efficiency. Its dimensional and thermal stability enhances insulation and crack resistance, while its moisture-transfer capability ensures full hydration between the slurry surface and substrate by boosting surface strength, bonding with the base layer, and strength uniformity. 

Celluose fiber is widely applied as an indispensable additive in insulation materials and concrete composites.

What are the key features of cellulose fiber?

-Sourced from renewable natural materials (wood, plant fibers)

-Biodegradable, non-toxic, and environmentally benign

-Resistant to moisture, rot, and biological decay

-Lightweight with excellent handleability and dispersion

-High compatibility with concrete admixtures and binders

-Superior water retention and moisture-regulation capability

-Enhances concrete workability and pumpability 

Increases compressive and flexural strength of concrete 

-Reduces cracking and shrinkage 

-Increases resilience to impact and abrasion 

-Improves durability and lifetime of concrete structures

Technical Data:

What are the advantages and benefits of cellulose fiber?

-Eco-Friendly & Sustainable: Derived from renewable resources; biodegradable after service, complying with global environmental standards (e.g., EU ECOCERT).

-Enhanced Concrete Workability: Improves pumpability and reduces segregation, cutting construction time by 15%–20% for large-scale projects.

-Superior Crack Control: Three-dimensional network restricts shrinkage, reducing drying shrinkage by 20%+ and minimizing crack formation.

-Improved Mechanical Performance: Boosts concrete’s compressive strength by 10%–15% and flexural strength by 20%–25%.

-Cost-Efficient: Reduces maintenance costs by extending structure service life; lower transportation costs than synthetic fibers (similar density but renewable sourcing).

-Enhanced Durability: Increases impact and abrasion resistance, making it ideal for high-traffic areas like highways and industrial floors.

Is there any recommended dosage for cellulose fiber?

Dosage varies by concrete type and application, with the following guidelines for reference:

-General concrete (residential floors): 0.3–0.5kg per cubic meter

-High-traffic pavements/highways: 0.6–0.8kg per cubic meter

-Insulation mortar/gypsum products: 0.8–1.0kg per cubic meter

-Asphalt mixture: 0.5–0.7kg per ton

-Contact our technical team for customized dosage based on project specifications.

How to mix cellulose fiber? 

1.Add coarse/fine aggregates and cellulose fiber into the mixer first.

2.Dry mix for 60 seconds to ensure uniform dispersion (prevents flocculation).

3.Add cement, water, and admixtures, then wet mix for 120–150 seconds.

4.Key tip: For pumpable concrete, extend wet mixing by 30 seconds to enhance workability.

What applications is cellulose fiber utilized for? 

1. Transportation Infrastructure

-Highway and municipal road pavements; bridge decks and tunnel linings

-Airport runways and taxiways (abrasion resistance enhancement)

2. Building & Construction

-Residential/commercial building floors, basements, and shear walls

-Precast concrete products (pipes, decorative panels) and MDF manufacturing

-Insulation mortar and gypsum board production

3. Landscape & Industrial

-Landscaping hardscaping (patios, walkways) and industrial workshop floors

-Sewage treatment plant structures (moisture-resistant performance)

How to store and handle cellulose fiber? 

Cellulose fiber should be kept properly to remain its properties and performance.

-Store in a dry, cold warehouse with temperatures ranging from 15-25℃ and relative humidity ≤ 60%.

-To prevent fiber clumping, avoid direct sunlight and moisture (such as rain or damp floors).

-Avoid strong oxidants and high heat (50℃) to maintain integrity.

-After partial usage, firmly seal the container. Shelf life is 18 months with proper storage.

-Stack no more than 5 layers to avoid packaging compression and fiber aggregation.

FAQ

Question 1: What’s the right dosage for my concrete mix?

A1: Use 0.3–0.5kg/m³ for homes, 0.6–0.8kg/m³ for roads. Share your concrete grade and project type with us for a precise plan.

Question 2: Is cellulose fiber environmentally friendly?

A2: Yes. It’s made from renewable wood/plant fibers, biodegradable, and non-toxic, safe for soil and water.

Question 3: Can cellulose fiber be used in high-traffic areas?

A3: Absolutely. It boosts abrasion resistance by 30%+, making it perfect for highways, airports, and factory floors.

Question 4: How to choose the right fiber length of cellulose fiber?

A4: 1.8–2.5mm for mortar/gypsum; 2.5–3.5mm for concrete pavements/bridges.

Question 5: Does cellulose fiber work in cold regions?

A5: Yes. Its water retention ensures full hydration in low temperatures, improving freeze-thaw resistance. Increase dosage by 0.1kg/m³ in -10℃+ areas.

Question 6: Can cellulose fiber be mixed with synthetic fibers?

A6: Yes. Mixing with PP fiber (1:1 ratio) combines natural eco-friendliness and synthetic durability.

Question 7: How to check fiber dispersion of cellulose fiber?

A7: No flocs in fresh concrete = good dispersion. For hardened concrete, cut a sample—uniform fiber distribution means success.

Question 8: Is cellulose fiber suitable for high-temperature concrete?

A8: It’s stable below 120℃. For high-temperature projects (e.g., industrial furnaces), use our heat-resistant modified variant or other fibers. Please consult with us for advice.