3D Compound drainage nets

Specifications

It is widly used on the rubbish-landfills,high way subfrade and pavement,railwy,tunnel,gardon,playfrounds and other underground

3d compound drainage nets

 

       (three-dimensional soil drainage plate, waterproof and drainage plate, waterproof and drainage plate) by spatial structure plastic nets core double-sided adhesive ooze water geotextile (or a geotextile, a geomembrane) composition. 3d geotechnical nets core includes a thick vertical rib, as well as the top and bottom of each a inclined buy, can be rapidly rib, oneself also has a drainage pore maintenance system under the high load, can block the capillary water. At the same time, it also can play the role of isolation and foundation reinforcement can replace the traditional sand and gravel layer, mainly for the landfill, roadbed and tunnel wall drainage, is a new type of geosynthetic materials.
In railroad, highway transportation infrastructure, engineering safety and service life and its drainage system, which has close relation to the drainage system geosynthetic materials is an important component part of compound drainage network, including 3d drainage effectiveness of particularly remarkable.

  Compound earthwork drainage nets technical parameters and product specifications:

 

No.	Project	Units	Standard value
			1200g	1400g	1600g	1800g	2000g
1	Complex mass per unit area	g/m2	≥1200	≥1400	≥1600	≥1800	≥2000
2	Media thickness	mm	≥6.0	≥7.0	≥8.0	≥9.0	≥10.0
3	Composite longitudinal tensile strength	KN/m	≥16.0	≥16.0	≥16.0	≥16.0	≥16.0
4	Complex hydraulic conductivity	m2/s	≥1.2×10-4	≥1.2×10-4	≥1.2×10-4	≥1.2×10-4	≥1.2×10-4
5	Network core and non-woven peel strength	KN/m	≥0.3	≥0.3	≥0.3	≥0.3	≥0.3
6	Net core thickness	mm	≥5.0	≥5.0	≥6.0	≥7.0	≥8.0
7	The tensile strength of the core network	KN/m	≥13.0	≥15.0	≥15.0	≥15.0	≥15.0
8	Non-woven mass per unit area	g/m2	≥200	≥200	≥200	≥200	≥200
9	Non-woven normal permeability	cm/s	≥0.3	≥0.3	≥0.3	≥0.3	≥0.3
10	Width	m	2.1	2.1	2.1	2.1	2.1
11	Roll length	m	30	30	30	30	30

  

The characteristics of three-dimension drainage network:

 

1,When load for 720kPa, gradient of 2% 2500m/d, permeability, flow rate 13pm/m.
2,Creep test in bear 1200kPa load 10,000 hours later, retains more than 60% of the thickness, 3d drainage nets
3,Three ribs drainage nets core carbon black content is less than 2%, 0.94 g/cm3 density, tensile strength not less than 36.5 kN/m, molten index 1.0 g / 10min, ply 7.6 mm.
4,Nonwoven geotextiles apparent aperture 0.18 mm, permeable rate 0.26 Sec - 1 cm/Sec, permeability 0.2, punctured strength 580N, trapezoidal tear strength 356 N, hold the tensile strength of the 900 N, holds the intensity of tensile strength 50%, blowout 2750kPa.

  3D Compound Drainage Nets Role Features:

1,Laying the foundation and yankees, used in between the yankees from foundation and bottom water blocking between capillary water and effectively combined to edge drainage system. This structure automatic shortened foundation, the drainage way greatly reduced, and the drainage time can make use of selection of base material can be used with the decrease in the number of (more fine material, permeability lower material), can prolong the service life of the road.
2,In subbase laid 3d composite drainage nets to prevent fine material into the base to grassroots (which is also play isolation effect). Aggregate grassroots limited degree of into the soil nets upper part. So, compound earthwork drainage nets and a potential limit the role of primary lateral movement aggregates, in this way, its function is similar to the geogrid reinforced role. Generally speaking, compound earthwork drainage nets tensile strength and rigidity of better than many more for the foundation reinforcement earthwork, such restrictions would function to improve its support ability.
3,Road aging, cracks, most rain will enter section. In this case, the 3-d compound drainage nets direct laid down in the pavement, instead of can drainage foundation. 3d compound drainage nets during water into the foundation/subbase its first before collection. But also in three-dimensional compound drainage nets at the bottom of the bag, a film on further prevent moisture into the foundation. The rigid road system for, this structure allows the drainage coefficient with high Cd. Design road Another advantage of this structure is possible can make concrete more evenly on the advantages of the hydration degree (studies are ongoing). Whether the rigid road or flexible road system, this structure can prolong the service life of the road.
4,In northern climates, laid 3d compound drainage nets can help to reduce the influence of freezing expansion. If the frozen deep, can put the depth of geotechnical nets laid in the yankees more shallow location as capillary jams. Another often need not frost heaving with the granular subbase replacement, down extended to the freezing depth. Yi of backfill soil freezing expansion can be directly in the 3d compound drainage online surface, until foundation ground line. In this case, this system can be connected to drainage exports, make underground water level is equal to or less than that in depth. So it could potentially limit the development of ice crystals, in cold areas, instead of melting ice in the spring of traffic loads restrictions.
 

 3D Composite Drainage Nets Seam And Lap:

1,Adjust the direction of geosynthetic materials, the material of the length direction perpendicular to roll ways.
2,Compound earthwork drainage nets must termination, the adjacent soil nets core along the materials of overlapped geotextile roll.
3,The neighboring geotextile materials volumes of geotechnical nets core with white or yellow plastic buttons or polymer tape, thus connection materials connected coil. The length direction along the material volume every three feet with tape connection again.
4,Lap of the direction of geotextiles and packing pile up direction. If geotextile materials laying in foundation/grassroots and subbase continuous wedge between welding, crew-cut welding or suture, make the geotextiles resource-constrained upper get fixed. If suture, recommend using flat seam method or general seam method, in order to achieve the minimum requirement of pins length