Drainage Composite Drainage Material
Drainage composites replace traditional gravel french drains by allowing water to pass through without clogging. They are available for many different uses including foundation drainage, behind retaining walls and green roofs.
Drainage geocomposites are made of a molded polypropylene core that is covered with a non-woven filter fabric on both sides. The fabric prevents soil and material from entering the molded core but allows surface moisture to freely pass through.
HYDRODUCT(r) 660
HYDRODUCT(r) 660 is a heavy duty, preformed drainage composite system. Its core is a hollow, studded polypropylene sheet covered on one side with nonwoven, needle punched polypropylene filter fabric and on the other side with a smooth polymeric film. The high strength, nonwoven geotextile maintains permeability and protects the drainage composite from job site damage prior to, and during the installation of, the overburden. It also enhances waterproofing by removing and transporting water during construction, which prevents concrete hydration and enhances curing. It’s compatible with both PROCOR(r) fluid applied and BITUTHENE(r) sheet membranes, as well as with green roofs. It also can be used as a perimeter drain in place of traditional aggregate drain tile systems for green roofs, or for basements, retaining walls and tunnels.
AGRU America’s Geocomposite Drainage Solution
Whether used in solid or hazardous waste landfills, mine tailing impoundments and reclamations, or ponds and lagoons, AGRU’s drainage geocomposites are the best solution for applications requiring filtration to keep silt and soil particles from clogging flow. They are also the perfect choice for lining double-lined containment projects where leak detection is critical.
Drainage geocomposites feature a High Density Polyethylene (HDPE) “geospacer” or “geodrainage layer” with a non-woven needle-punched or geotextile laminated composite drainage material to one or both sides. This design prevents the movement of soil fines into the HDPE core, a condition that would throttle the drainage performance over time.
These drainage geocomposites are tested to determine their hydraulic performance using standard ASTM or EN ISO 12958 tests that place the drainage layer under a constant confining pressure while measuring water flow within the HDPE core. This is known as in-plane flow. Multiple tests at varying pressures and hydraulic gradients are conducted to build up a flow chart that will help to understand the drainage capability under a variety of conditions.
Although these benefits are clear, there are obstacles that need to be overcome to encourage more widespread adoption of geocomposite drainage systems. These include the perception that they are more expensive upfront, as well as a lack of understanding about their long-term value proposition. Through education initiatives, case studies, and exploring financial options and incentives, construction professionals can learn how these innovative solutions offer significant savings over time.
TERRAM Drainage Geocomposites
Drainage geocomposites replace conventional granular layer drains with higher performing, easier to install and more cost effective solutions. They are manufactured by bonding a compression resistant net core between two or more geosynthetics. The textile layers allow liquids and gases to pass through the core while preventing soil particles from washing into and clogging it. The net/filter or net/membrane composites then collect these liquids and gases which can be conveyed to collection points.
The perforated mini-pipes used in TERRAM drainage geocomposites have very high flow rates composites drainage network and transmissivity when compared to traditional granular layer drainage materials. They are also not susceptible to creep in compression or geotextile intrusion like other drainage products. These features make them the ideal solution for landfill applications for leachate and gas collections, sub-slab depressurization systems in buildings and more.
The TERRAM product range includes both a multilinear drainage geocomposite, as well as a single side membrane and multi-layered nonwoven filter. Both options offer exceptional performance in both liquid and gas drainage. They are commonly used in road construction as surface and subsurface drains, in green roofs, SUDS projects, as part of embankment stabilization and in the collection and venting of landfill leachate and gases. They can also be incorporated in steep slopes, in erosion control, on retaining walls and bridge abutments. Often used in conjunction with other PGI products such as ground reinforcement mats, rockshield plastic mesh and underground warning tapes.
Team EJP-DRain(tm)
Drainage composites feature a molded three-dimensional plastic core that is surrounded by non-woven geotextile fabric. This design protects the perforations from debris and resists clogging, resulting in higher flow rates than traditional drains. They also relieve hydrostatic pressure build-up against subterranean surfaces. These advantages combined with significantly lower installed costs make these products an attractive alternative to traditional French Drain systems.
EJP’s drainage product group, Team EJP-DRain(tm), is a good example of a successful new solution. These drainage composites are much cheaper to install than traditional French Drain systems and they perform better too.
When a large athletic complex needed to address water issues, EJP was called in for an evaluation and recommendation. After a demonstration installation, the facility’s owners were impressed with the results. The team at EJP is prepared to help you solve your problems as well. Whether it’s tapping into water mains without interrupting service, valve insertion or leak detection services, contact us today.
