Granular Lignin Fiber is a high-performance fiber stabilizer specially developed for Stone Matrix Asphalt (SMA) mixtures and serves as an indispensable core component of SMA.
Basalt fiber, steel fiber, and lignin fiber improve structural performance, crack resistance, and extend pavement lifespan.
Powder water reducers and anti-rutting additives integrate smoothly into mixes, enhancing workability and simplifying construction.
All products are safe, sustainable, and suitable for highways, bridges, airports, municipal roads, and heavy-load infrastructure projects.
In SMA mixtures, road-use granular lignin fiber forms a three-dimensional network structure, playing a composite role in adsorbing asphalt, reinforcing the mixture, and stabilizing the asphalt film. Its core mechanism lies in its strong oil-absorption capacity, which forms a thicker asphalt film on the surface of aggregates, thereby significantly improving the anti-aging ability and durability of asphalt pavements.
At the same time, the reinforcing characteristics of the fiber effectively enhance the high-temperature stability and low-temperature crack resistance of the mixture, prevents rutting and cracking, and avoids asphalt drainage and segregation, thereby extending the service life of the pavement.
Road-use granular lignin fiber is not limited to SMA pavements; it is also widely used in fiber-reinforced asphalt pavements, open-graded or permeable asphalt pavements, highway anti-skid surface courses, airport runways, bridge deck pavements, and other high-standard engineering fields.
| Serial Number | Project | Technical Requirements | ||
| Diameter Specification: 6.5 mm | ||||
| 1 | Particle Diameter (mm) | 6.5 ± 1 | ||
| 2 | Particle Length (mm) | E16 | ||
| 3 | Fibril and Particle Sieving | 4 mm Passing Rate (%) | ≤ 8 | |
| 4 | 2.8 mm Passing Rate (%) | – | ||
| 5 | Screening of Simulated Post-Fiber Particles | Increase in 4 mm Passing Rate (%) | ≤ 12 | |
| 6 | Increase in 2.8 mm Passing Rate (%) | – | ||
| 7 | Granulating Agent | Content (%) | 3-20 | |
| 8 | Rotational Viscosity (135°C) (mPa·s) | ≥200 | ||
| 9 | Ash Content (%) | 12-22 | ||
| 10 | Mass Loss (210°C, 1 h) (%) | ≤6, and no signs of combustion. | ||
| 11 | Moisture Content (%) | ≤5 | ||
| 12 | Bulk Density (kg/m³) | 350-550 | ||
| 13 | Density | Field Test | ||
| 14 | Lignocellulose after thermal extraction | Oil Absorption Rate (x) | 4-8 | |
| 15 | Wood Fiber Content (%) | ≥85 | ||
| 16 | Maximum Length (mm) | ≤6 | ||
| 17 | Average length | Field Test | ||
Shandong Luxin Road Maintenance Materials Co., Ltd. is state -owned technology enterprise Specializing inpremium road maintenance materials-primarily road-grade lignin fibers and water-reducing agents-and isdistinguished by its stable, high-capacity production capabilities and excellent industry reputation.
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Our high-performance materials improve pavement strength, crack resistance, and long-term durability for highways, bridges, airports, and municipal projects. Designed for efficient construction and stable performance under heavy traffic and harsh conditions, Luxin solutions help reduce maintenance costs and extend infrastructure service life.
Shandong Luxin provides high-performance road maintenance materials designed to improve pavement durability, construction efficiency, and long-term infrastructure stability. With advanced manufacturing technology, strict quality control, and years of industry experience, our products are trusted for highways, bridges, airports, and municipal engineering projects.
Our materials are engineered to perform under heavy traffic, high temperatures, harsh climates, and long-term infrastructure operation conditions.
Whether you are a contractor, distributor, engineering company, or infrastructure project owner, Luxin provides professional products, stable supply capability, and technical support tailored to your project requirements.
