THE USE OF GEOTEXTILES IN TRANSPORT INFRASTRUCTURE CONSTRUCTION:
- Reinforcement of the weak-bearing subsoil of embankments in order to accelerate its consolidation and to ensure the required stability,
- Construction of reinforced embankments,
- Limitation of the destructive impact of mining damage on road surface construction – an important element in mining and construction prevention, thus reducing the danger of deformation of the mining area,
- Covering drainage systems to protect them from siltation with fine-grained soil, Stabilisation of landslides, Construction of filter separation layers between the subsoil and coarse-grained material,
- Reinforcement of the upper layer of the subsoil of road and railway pavements or the lower layers of the susceptible substructure,
- Improvement of the ability of aggregate to distribute loads on the ground, reducing stresses in the subsoil, thus slowing the accumulation of permanent micro-deformations, surface deformations and the formation of ruts, protecting the aggregate layer from progressive deterioration caused by lateral displacement of the aggregate in tension and shear, contamination of the aggregate by fine particles of the subsoil, and deterioration of the aggregate grains from repetitive loads, and the sinking of aggregate grains into the subsoil,
- Construction of parking areas and car parks in difficult water conditions, temporary roads, storage yards, temporary forest, agricultural and military roads, estate roads, cycle paths, sports fields and tennis courts, temporary military, agricultural and civil airfields and fuel stations.
- Reinforcement of road shoulders.
A characteristic feature of geotextiles is high and uniform strength in both directions with low and uniform elongation. Geotextiles behave like strip reinforcement in earth structures, where the tension is transmitted through surface friction and also through various anchoring elements.
Geotextiles are flexible, even at low ambient temperatures, allowing them to be laid in uneven terrain. Unrolling, unfolding, cutting to the required size is easy. Installation of geotextiles requires simple tools.
The high flexibility and shape acceptance of the substrate makes geotextiles particularly suitable for the heavy-duty pavement subgrade, where deep compaction of sharp-edged aggregate grains with heavy vibratory compactors is required.
Geotextiles adapt to significant local ground deformations and the subsoil profile, extending without fear of breaking the continuity of the material, and with excellent interaction with the soil and various aggregates.
If a geotextile is to be used as a reinforcing material working under external loads, it should meet the basic requirements for its effectiveness, i.e. the highest possible tensile strength with low elongation and a rough surface texture that allows good bonding with aggregate and soil. The slippery texture does not prevent the aggregate grains from spreading apart under load, and even facilitates it, which compromises the load-bearing capacity of the layer.