Geofabric for Driveway
1. Stabilizes the roadbed: Enhances soil bearing capacity, distributes vehicle loads, and prevents lane settlement, collapse, and cracking.
2. Filters and prevents clogging: Prevents fine soil particles from mixing into the gravel layer, while simultaneously draining accumulated water to prevent muddy and waterlogged roads.
3. Convenient construction: Easy to cut and lay directly between the subgrade and aggregate, requiring no specialized equipment, saving labor and time.
4. Long-lasting and durable: Resistant to compaction, UV radiation, and acid/alkali corrosion, extending the service life of the road and reducing maintenance frequency.
Products Introduction：
I. Basic Properties
Geofabric for Driveway is primarily made of polypropylene or polyester synthetic fibers, and is divided into two types: short-fiber nonwoven geotextile and long-fiber nonwoven geotextile. It features a uniform pore structure, and its basis weight is typically suitable for roadbed conditions. Common specifications range from 150–400 g/m². It is flexible, bendable, and cut to size, chemically stable, resistant to soil acids and alkalis, and resistant to microbial corrosion. It has good compatibility with gravel and subgrade soil, is easy to lay, and can adapt to different roadbed environments such as rural driveways, private driveways, and temporary roads.
II. Core Functions
Isolation: Separates the subgrade soil layer from the overlying crushed stone pavement layer, preventing fine soil particles from rising and mixing into the crushed stone, thus avoiding pavement loosening and settlement.
Filtration: Drains excess water from the subgrade, prevents soil particle loss, prevents water accumulation and softening of the subgrade, and ensures smooth drainage of the lanes.
Reinforcement: Distributes the load pressure generated by vehicle traffic, evenly transmits stress, improves the overall bearing capacity of the subgrade, and reduces rutting, cracking, and uneven settlement.
Protection: Buffers damage to the subgrade from vehicle rolling and rainwater erosion, extending the overall service life of the lanes.
III. Main Features
High overall permeability and drainage efficiency, with good particle barrier effect; high tensile strength and excellent tear resistance, able to withstand repeated vehicle rolling without damage; aging resistant and UV resistant, long service life in outdoor environments; lightweight and easy to cut, simple construction and laying, suitable for simple lane construction; low cost, offering outstanding cost-effectiveness compared to traditional subgrade reinforcement methods, effectively reducing the frequency of subsequent pavement maintenance.
Product Parameters：
| project | metric | ||||||||||
| Nominal strength/(kN/m) | |||||||||||
| 6 | 9 | 12 | 18 | 24 | 30 | 36 | 48 | 54 | |||
| 1 | Longitudinal and transverse tensile strength / (kN/m) ≥ | 6 | 9 | 12 | 18 | 24 | 30 | 36 | 48 | 54 | |
| 2 | Maximum elongation at maximum load in longitudinal and transverse directions/% | 30~80 | |||||||||
| 3 | CBR top penetration strength /kN ≥ | 0.9 | 1.6 | 1.9 | 2.9 | 3.9 | 5.3 | 6.4 | 7.9 | 8.5 | |
| 4 | Longitudinal and transverse tearing strength /kN | 0.15 | 0.22 | 0.29 | 0.43 | 0.57 | 0.71 | 0.83 | 1.1 | 1.25 | |
| 5 | Equivalent aperture O.90(O95)/mm | 0.05~0.30 | |||||||||
| 6 | Vertical permeability coefficient/(cm/s) | K× (10-¹~10-), where K=1.0~9.9 | |||||||||
| 7 | Width deviation rate /% ≥ | -0.5 | |||||||||
| 8 | Unit area mass deviation rate /% ≥ | -5 | |||||||||
| 9 | Thickness deviation rate /% ≥ | -10 | |||||||||
| 10 | Thickness coefficient of variation (CV)/% ≤ | 10 | |||||||||
| 11 | Dynamic perforation | Puncture hole diameter/mm ≤ | 37 | 33 | 27 | 20 | 17 | 14 | 11 | 9 | 7 |
| 12 | Longitudinal and transverse fracture strength (grab method)/kN ≥ | 0.3 | 0.5 | 0.7 | 1.1 | 1.4 | 1.9 | 2.4 | 3 | 3.5 | |
| 13 | Ultraviolet resistance (Xenon arc lamp method) | Longitudinal and transverse strength retention rate% ≥ | 70 | ||||||||
| 14 | Ultraviolet resistance (fluorescence UV lamp method) | Longitudinal and transverse strength retention rate% ≥ | 80 | ||||||||
Product Applications：
In lane construction, geotextiles are crucial materials for enhancing the overall stability and service life of roads. They are widely used in various road surfaces, including highways, municipal lanes, parking lots, and rural roads, primarily serving multiple functions such as isolation, reinforcement, drainage, and crack prevention, adapting to the construction needs of different lane structure layers.
Laying geotextiles between the roadbed and base course effectively isolates the roadbed soil from the gravel and aggregate base course, preventing fine-particle soil from seeping into the base course voids, preventing base course loosening and deformation, while also restraining soil displacement, enhancing the overall bearing capacity of the roadbed, reducing uneven settlement and potholes in the later stages of lane construction, and ensuring a stable driving foundation.
For lane widening and splicing of new and old road surfaces, geotextiles can be laid at the overlap to alleviate stress differences between the two road sections, disperse concentrated pressure from vehicle loads, effectively prevent cracking and misalignment after widening, and improve the integrity and durability of the spliced area.
Laying geotextile between the asphalt surface layer and the base layer serves as a stress-absorbing interlayer, buffering stress generated by cracks in the base layer, preventing cracks from reflecting upwards to the asphalt pavement, reducing reflective cracking in the lanes, lowering the risk of rutting and cracking, and extending the service life of the asphalt pavement.
Laying geotextile on the shoulders, slopes, and drainage ditches on both sides of the lanes primarily functions as a reverse filter for drainage. It quickly drains water accumulated in the subgrade, preventing long-term soaking and softening of the subgrade, and also prevents silt from clogging drainage channels, preventing rainwater erosion and protecting the surrounding structures of the lanes.
For sections of road with high traffic pressure, such as heavy-load lanes and temporary construction access roads, high-strength geotextiles are used for reinforcement. This improves the bearing capacity of the foundation, resists deformation caused by repeated heavy vehicle traffic, reduces pavement subsidence and damage, and lowers later maintenance costs.
For ordinary municipal and rural roads, 150–200 g/m² short-fiber needle-punched geotextile is generally sufficient to meet the requirements. For highways, heavy-duty lanes and road surface crack prevention areas, 200–300 g/m² long-fiber geotextile or asphalt-impregnated geotextile is often used, which has stronger tensile strength and anti-aging ability and is suitable for high-standard road construction requirements.
Geotextiles, with their excellent permeability, filtration, reinforcement, protection, and isolation properties, are widely used in engineering fields such as water conservancy slope protection, highway and railway subgrade reinforcement, municipal greening, tailings landfill, river management, and aquaculture. They can effectively prevent soil erosion, disperse soil stress, and extend the service life of projects. They also have the advantages of convenient construction, strong stability, and wide adaptability. They are an indispensable flexible protective material in geotechnical engineering, providing reliable ecological and structural protection for various infrastructure constructions.
