RoaDrain™ Roadway Drainage System

Tensar International’s RoaDrainTM Roadway Drainage System provides a synthetic subsurface drainage layer (SSDL) that outperforms open-graded base layers (OGBL). The RoaDrain System features durable, nonwoven geotextile filters laminated to the top and bottom of a tri-planar geonet core. These components offer distinct benefits: while the geonet core provides a void-maintaining structure with high compressive strength to resist deformation, the geotextile material offers superior separation and filtration of fines and other materials.  

    The RoaDrain System can be easily installed:

    • Directly beneath a Portland Cement Concrete (PCC) pavement surface to remove water rapidly
    • Directly beneath PCC joints and joint repairs
    • Beneath the aggregate base course to shorten the drainage path
    • Above the subgrade to act as a capillary break over frost-susceptible soils, helping to eliminate frost-heave

    The RoaDrain System can be specified for any application exposed to excessive moisture – including highways, airports, railroad trackbeds, embankments, and detention ponds.


    RoaDrain™ Roadway Drainage System

    The RoaDrain System can be specified for any application exposed to excessive moisture – including highways, airports, railroad trackbeds, embankments, and detention ponds.

    The RoaDrain System’s performance exceeds standards set for typical stone drainage layers. It replaces an OGBL in a drainage design to:

      • Increase the flow rate by 500%, quickly removing water and decreasing overall drainage time
      • Provide “excellent” drainage as defined by AASHTO (50% water removal from a pavement structure within two hours) to significantly extend pavement life and reduce maintenance costs
      • Lower material costs with the reduction of processed structural fill quantities
      • Save on construction costs and accelerate construction schedules with faster installation than an OGBL

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