Transportation is the backbone of national development, and highways, as the core backbone of the comprehensive transportation system, are also the “arteries” that support high-quality economic and social development. In recent years, China’s national key highway projects have accelerated, from the renovation and expansion of the Jingtai Expressway to the construction of the Heishan North South Expressway, from tackling mountainous highways to connecting cross regional channels. Each project has put forward strict requirements for the durability, stability, and environmental friendliness of construction materials. Among numerous infrastructure materials, high-strength polyester spunbond hot-rolled geotextile has become a “hidden hero” in the construction of national key highway projects due to its excellent mechanical properties, durability, and wide adaptability, silently guarding the safety and long-term traffic of roads.
It is not ordinary geotextile, but a high-end “protector” for infrastructure construction
When it comes to geotextile, many people equate it with ordinary “synthetic fabric”, but in reality, it is not. High strength polyester spunbond hot-rolled geotextile is a high-performance geosynthetic material made from high-purity terephthalic acid (PTA) and ethylene glycol (EG) as raw materials, through multiple precision processes such as high-temperature condensation, melt spinning, multi-stage stretching, spunbond forming, and hot-rolled reinforcement.
Compared with traditional short fiber needle punched geotextiles, it has achieved a fundamental upgrade in production technology – adopting fully automated wide width hot rolling composite technology, abandoning traditional adhesive or seam weaving reinforcement methods, and forming a micro melting dot matrix combination between fiber bundles, which not only ensures the integrity of the material, but also avoids the hidden danger of later additive precipitation. With the support of this technology, high-strength polyester spunbond hot-rolled geotextiles have achieved comprehensive breakthroughs in strength, durability, and environmental friendliness, making them a “high-end player” in the field of geotechnical materials, perfectly adapting to the strict standards of national key high-speed projects.
Four major traits, accurately solving pain points in high-speed construction
National key highway projects often cross various complex terrains such as mountains, plains, and wetlands, facing many construction challenges such as roadbed settlement, pavement cracking, soil erosion, and acid-base erosion. The core advantage of high-strength polyester spunbond hot-rolled geotextile is precisely to accurately solve these pain points and safeguard engineering quality.
Advantage 1: Ultra high strength, building a strong “load-bearing defense line” for the roadbed
The most prominent feature of high-strength polyester spunbond hot-rolled geotextile is its super strong tensile strength. According to authoritative testing, the fracture strength of high-quality products can reach over 80kN/m in the longitudinal direction, ≥ 70kN/m in the transverse direction, and even up to 200kN/m, far exceeding the industry average level. Its three-dimensional stable mesh skeleton structure can effectively disperse road pressure, constrain roadbed deformation, and prevent hidden dangers such as uneven settlement and landslides in the roadbed.
In the 2025 renovation and expansion project of a highway in Shandong, the soft foundation treatment section is 12 kilometers long, and the design requires the tensile strength of geotextile to be ≥ 100kN/m, and the control of uneven settlement is extremely strict. The final selection of high-strength polyester spunbond hot-rolled geotextile successfully met the requirements. By uniformly diffusing the upper load, it effectively suppressed the compression deformation of the soft foundation, ensured the stability of the connection between the new and old roadbeds, and built the first line of defense for engineering quality. This excellent reinforcement performance makes it the preferred material for complex road sections such as high fill and soft soil foundations.
Advantage 2: Crack resistance and impermeability, meeting the dual needs of waterproofing and steam permeability
The highway subgrade is most afraid of water immersion and the road surface is most afraid of cracking, and high-strength polyester spunbond hot-rolled geotextile can solve these two major problems at the same time. In terms of crack prevention, it has good ductility and flexibility, with precise control of fracture elongation in the range of 50% -65%. It can withstand small deformations of the roadbed and absorb stress concentration on the road surface, effectively delaying the occurrence of reflective cracks on asphalt pavement and greatly extending the service life of the road. In the renovation and expansion project of the Shandong section of the Beijing Taiwan Expressway, the application of this type of material significantly reduced the incidence of reflective cracks and reduced the number of pavement diseases by more than 60% compared to traditional sections.
The anti-seepage and moisture-proof performance precisely meets the requirements of “waterproof without stuffiness” for high-speed roadbeds. The directional drainage system with “outer sparse and inner dense” formed by a special hot rolling process can withstand a water pressure of 120kPa for 72 hours without leakage. At the same time, the water vapor transmission rate can reach 2150g/(m ² · 24h), which can block water infiltration, prevent soil softening, frost heave and thaw settlement in the roadbed, and discharge moisture inside the roadbed to prevent mold growth in the base layer. In the construction of the Qichun Expressway in southeastern Hubei, it effectively solved the problem of water seepage in high fill roadbeds in mountainous areas, reducing the frequency of later repairs by 70%.
Advantage 3: Weather resistant and corrosion-resistant, suitable for long-term service in extreme environments
National key high-speed projects often span different climatic and geological regions, requiring extremely high weather resistance and corrosion resistance of materials. High strength polyester spunbond hot-rolled geotextile uses raw materials with a purity of over 99.95%, high molecular chain regularity, and excellent resistance to UV degradation and acid-base corrosion.
Through actual testing, it has been found that it can maintain over 92% of its initial strength in strong acid-base environments with pH values ranging from 3 to 12. It can be used for a long time in extreme environments ranging from -25 ℃ to 70 ℃, with a service life of over 30 years, far exceeding the 15 year service life of traditional geotextiles. For highways that pass through special areas such as saline soil and mines, this corrosion resistance can prevent premature aging and pulverization of materials, ensuring long-term stability of the project. In the construction of the Aksu transit section of National Highway 314, the material has undergone years of wind, sand, and salt erosion, but still maintains good mechanical properties, ensuring road safety.
Advantage 4: Green and environmentally friendly, in line with the development concept of green infrastructure
At present, “green infrastructure” has become a core requirement of national key projects, and high-strength polyester spunbond hot-rolled geotextiles perfectly fit this concept. Its production process is dust-free, odorless, and does not introduce any organic additives, eliminating the risk of plasticizer precipitation polluting soil and groundwater in the later hydrological cycle. It has obtained China Environmental Labeling Product Certification and EU REACH Regulation Compliance Declaration.
At the same time, materials can be recycled and reused, and the construction process is simple and convenient, without the need for complex equipment, which can reduce construction pollution and resource waste. In ecologically sensitive high-speed projects such as mountainous areas and wetlands, it can play a protective role without damaging the surrounding ecological environment, achieving the coordinated development of engineering construction and ecological protection.
Fully integrated into all aspects of high-speed construction
In national key highway projects, the application scenarios of high-strength polyester spunbond hot-rolled geotextile are very extensive, from roadbed reinforcement, pavement crack prevention, to slope protection, drainage filtration, fully integrated into various aspects of road construction, achieving “one-stop” protection.
During the roadbed construction phase, laying it on the roadbed base or at the junction of new and old roadbeds can effectively enhance the roadbed bearing capacity, suppress uneven settlement, reduce the amount of filling material, and lower construction costs; In road construction, laying between the asphalt surface layer and the semi-rigid base layer can effectively delay reflection cracks, improve road smoothness and durability; In slope protection, when combined with vegetation, it can fix soil and prevent soil erosion, achieving a dual effect of “engineering protection+ecological greening”; In the drainage system, it can serve as a filtering layer to block sediment from blocking the drainage pipes and ensure smooth drainage.
Empowering infrastructure: helping China’s high-speed global expansion
As an important infrastructure project within the framework of the “the Belt and Road” and China CEEC cooperation, the construction of the north-south expressway in Montenegro has demonstrated to the world China’s infrastructure level, including the application of a large number of high-strength polyester spunbonded hot rolled geotextiles. It has won international recognition in overseas projects with its excellent performance, becoming an important supporting material for “Chinese infrastructure” to go global.
Nowadays, high-strength polyester spunbond hot-rolled geotextile can be seen in national key highway projects in various parts of China, whether it is high-speed trunk lines in plain areas or difficult sections in mountainous areas. It safeguards the safe passage of every highway with its strength, promoting the development of China’s highway construction towards “high quality, long service life, and green environmental protection”.
With the deepening of China’s strategy of building a strong transportation country, the construction standards of national key highway projects will continue to improve, and the performance requirements for geotechnical materials will also become more stringent. High strength polyester spunbond hot-rolled geotextile, with its excellent performance advantages, has not only become the core material of current highway construction, but also plays an important role in promoting the upgrading of infrastructure industry and practicing the concept of green development.
From raw material research and development to production process upgrades, from engineering applications to quality control, every technological breakthrough in high-strength polyester spunbond hot-rolled geotextiles injects momentum into the high-quality construction of national key highway projects. In the future, with the continuous innovation of geosynthetic material technology, it will further optimize performance, expand application scenarios, and continue to help improve China’s highway network, laying a solid transportation foundation for high-quality economic and social development, and making the business card of “China’s infrastructure” even more shining.
Dongguan Liansheng Non woven Technology Co., Ltd. was established in May 2020. It is a large-scale non-woven fabric production enterprise integrating research and development, production, and sales. It can produce various colors of PP spunbond non-woven fabrics with a width of less than 3.2 meters from 9 grams to 300 grams.
Post time: Apr-08-2026