Product Introduction
The composite drainage net is a new type of drainage geosynthetic material. Made from high-density polyethylene (HDPE) via a special extrusion molding process, it features a unique three-layer structure. The middle ribs, with high rigidity, are arranged longitudinally to form drainage channels; the upper and lower ribs, arranged in a crisscross pattern, act as supports to prevent geotextiles from embedding into the drainage channels. Even under extremely high loads, it maintains excellent drainage performance and integrates the comprehensive functions of "filtration, drainage, ventilation, and protection".
Application Purposes
It is mainly used in drainage projects such as railways, highways, tunnels, municipal engineering, reservoirs, and slope protection, delivering remarkable results.
Performance Characteristics
Excellent drainage performance (equivalent to the drainage effect of 1-meter-thick gravel);
High tensile strength;
Reduces the risk of geotextiles embedding into the net core, ensuring long-term stable drainage;
Capable of withstanding long-term high-pressure loads (can bear a compressive load of approximately 3000 kPa);
Resistant to corrosion, acids, and alkalis, with a long service life;
Convenient for construction, shortens the construction period, and lowers costs.
Construction Technology
Adjust the orientation of the geocomposite drainage net so that the length direction of the material roll is perpendicular to the road.
The composite drainage net must be end-joined. The geotextiles of adjacent net cores should be lapped along the material rolls.
Connect the net cores of adjacent geosynthetic rolls using white or yellow plastic buckles or polymer straps to join the material rolls. Along the length direction of the rolls, make connections with straps at intervals of 3 feet (approximately 0.914 meters).
The direction of the lapped geotextiles should align with the direction of filler stacking.
If the composite drainage net is laid between the foundation/subbase and the subgrade base, continuous wedge welding, flat-head welding, or stitching must be performed to secure the upper layer of the lapped geotextiles. If stitching is adopted, flat-head stitching or standard stitching is recommended to meet the minimum requirement for stitch length.
Application Purposes
It is mainly used in drainage projects such as railways, highways, tunnels, municipal engineering, reservoirs, and slope protection, delivering remarkable results.
Performance Characteristics
Excellent drainage performance (equivalent to the drainage effect of 1-meter-thick gravel);
High tensile strength;
Reduces the risk of geotextiles embedding into the net core, ensuring long-term stable drainage;
Capable of withstanding long-term high-pressure loads (can bear a compressive load of approximately 3000 kPa);
Resistant to corrosion, acids, and alkalis, with a long service life;
Convenient for construction, shortens the construction period, and lowers costs.
Construction Technology
Adjust the orientation of the geocomposite drainage net so that the length direction of the material roll is perpendicular to the road.
The composite drainage net must be end-joined. The geotextiles of adjacent net cores should be lapped along the material rolls.
Connect the net cores of adjacent geosynthetic rolls using white or yellow plastic buckles or polymer straps to join the material rolls. Along the length direction of the rolls, make connections with straps at intervals of 3 feet (approximately 0.914 meters).
The direction of the lapped geotextiles should align with the direction of filler stacking.
If the composite drainage net is laid between the foundation/subbase and the subgrade base, continuous wedge welding, flat-head welding, or stitching must be performed to secure the upper layer of the lapped geotextiles. If stitching is adopted, flat-head stitching or standard stitching is recommended to meet the minimum requirement for stitch length.
