Composite Drainage Network
Drainage Composites consist of a three dimensional plastic core surrounded by non-woven geotextile fabric. They are a one component system, much less expensive than conventional French Drains and offer significantly better performance.
The three dimensional drainage network core can bear high compression load throughout the process of use and maintain a considerable thickness, providing good hydraulic conductivity. It can be widely used in landfill, highway subgrade and pavement drainage, railway drainage, tunnel drainage and soil reinforcement projects.
1. Filtration Drainage Protection
Drainage composites protect the waterproofing membranes of green roofs, plaza decks and earth sheltered structures by rapidly transporting water away from the surface to drainage outlets. DENIOS 3811R is a high-performing prefabricated drain composite that consists of a robust HDPE geonet with nonwoven, needle punched, polypropylene filter fabric bonded to one side. The melt-blown nonwoven filter fabric features fine fibers, fluffy structure, many inter-fiber gaps, small pore size and wrinkle resistance. Moreover, it can be retracted and has an excellent filtration efficiency and low permeability.
This filtration drain composite can prevent soil particles from clogging the drainage channels and improve the overall drainage capacity of the system. It can also serve as a protective layer for the waterproofing membrane, improving its lifespan.
A three-dimensional composite drainage network can also be used as a leachate collection guide layer in landfills. Traditional natural drainage materials like sand and gravel will occupy space in the landfill, but this geocomposite drainage system effectively discharges the leachate from the anti-seepage membrane, ensuring that the saturated head of the leachate is lower than the thickness of the geotechnical drainage material.
Laying this drainage mesh between the foundation and mudsill can quickly and effectively discharge the hydrops, limit aggregate base move transversely, increase the supporting property of the foundation, and reduce the risk of mudsill collapse. It can also be laid between the slurry and ground to discharge the slurry, reduce the groundwater level, and prevent soil liquefaction and settlement.
2. Isolation
Composite drainage net is a new type of dewatering geotechnical material designed to complement or replace sand, stone and gravel. It consists of a HDPE geonet heat-bonded on one or both sides with nonwoven needle Composite Drainage Network punched geotextiles. Its performance can meet or exceed our national standard GB/T17690.
Its raw material is high-density polyethylene, and it was made via a special extrusion forming technique. Its three-layer special structure has strong rigidity, and the middle rib is arranged longitudinally to form a drainage channel. The upper and lower fillets form support to avoid the geotextile inserting into the drainage channel, so that it can maintain good drainage performance even under high load. Its “filtration-drainage-ventilate-protection” comprehensive performance makes it the best choice for drainage in construction.
Its tensile and shear strength can strengthen soil, beautify the pore condition of the soil, promote plant growth, enhance the balance and bearing capacity of the soil and prevent landslide occurrence. It has been used in railway, highway, tunnel, municipal engineering, reservoir, slope protection and other drainage projects with remarkable effect. It is easy to install, reducing labor costs and improving the efficiency of construction. It is also environmentally friendly and complies with the national standard on the restriction of landfill disposal. It is a very safe, reliable and cost-effective product. In addition, it is easy to handle and clean.
3. Reinforcement
When we think of reinforcement, most of us picture a building or a structure that gets additional mechanical support. The term, however, also refers to the propping up of a behavior that supports its continued occurrence, even when other factors make it unlikely or impossible for the behavior to continue.
The rate at which a particular response is reinforced determines whether or not the response is likely to continue occurring. Reinforcement schedules can range from continuous reinforcement, where every response is reinforced, to extinction, where no responses are reinforced. Between these extremes are more complex schedules, such as ratio and interval schedules, that deliver reinforcement based on a fixed or variable number of responses.
A composite drainage network is a new type of geotechnical material. It is a three-dimensional geonet composited with two needle-punched non-woven geotextiles. It has a unique Glass fiber surface tissue double-sided adhesive seepage geotextiles and is an ideal drainage tool for landfill, highway subgrade and pavement drainage, railway and tunnel drainage, underground structure back drainage, retaining wall drainage, and garden and sports field drainage.
When selecting a reinforcer to use with a student, teachers often begin by gathering possible reinforcers, including tangible items, activities, special privileges, and social praise. Then they try different combinations of these to find the ones that work best for each individual student.
4. Frost Heave Relief
Although there is no way to completely eliminate frost heave, addressing the causes of it will help. Things like installing French drains, grading the site to improve drainage and building on well-draining soils can all help.
Frost heave occurs when soil moisture is converted to ice and pushes the ground upward. When the temperature drops, the ice melts and the ground lows back to its original position. Repeated cycles of freezing and thawing cause severe damage to the foundations of buildings and other structures.
To protect retaining walls from being forced out of place by frost heave, it’s important to use clean granular backfill and install weep holes for drainage. This will help prevent water penetrating the wall and lifting it from the ground. Unheated additions to homes can also be damaged by frost heave if their foundations don’t extend below the frost line.
To prevent this, it’s best to dig below the historic frost line and include a gravel or granular base layer that meets the International Concrete Paving Institute (ICPI) standards. Adding a drainage network beneath the paving system can also help reduce frost heave problems. This will collect and move water away from the paving system before it can penetrate into the subbase or foundation area. This can be especially helpful in colder climate conditions where the freezing depth is relatively high.