China High quality Prefabricated Vertical Drainage Quotes, Factory, Purchasing, Manufacturers

Prefabricated Vertical Drainage

Brand :Lover

Product origin :China

Delivery time :10days

Supply capacity :10000m2 per day

Prefabricated Vertical Drainage


Description

Prefabricated Vertical Drains (PVD), also called Wick Drains, are prefabricated drain strips consisting of a polypropylene core extruded into a configuration to transmit a maximum water flow on both sides of the core. The core is wrapped in a non-woven filter, ultrasonically welded together at the edges. Ground improvement using PVD is applied in areas with compressible water saturated soils such as peat, clay and silty clays, where significant settlements may occur. In addition, increased pore pressure may cause instability of the soil which can result in slip plane failures which can be eliminated by application of PVD.


Specification

 item 
 
 Test performance 
 
 unit 
 
model 
 
 remark 
 
 SPB-A 
 
 SPB-B 
 
 SPB-C 
 
 SPB-D 
 

 Plastic drain board
  
 
 Section measurement 
 
width 
 
mm 
 
100 ± 2 
 
100 ± 2 
 
100 ± 2 
 
100 ± 2 
 

 thickness 
 
mm 
 
≥ 3.5 
 
≥ 4.0 
 
≥ 4.5 
 
≥ 5.5 
 

 Vertical tonnage 
 
cm3/s 
 
≥ 15 
 
≥ 25 
 
≥ 40 
 
≥ 60 
 
350kPa 
side pressure 
 
 tensile strength 
 
kN/ 10cm 
 
> 1.0 
 
> 1.3 
 
> 1.5 
 
> 1.5 
 
 kN/ 10cm 
pull 
 
extension rate 
 

 
< 10 
 
< 10 
 
< 10 
 
< 10 
 
 kN/ 10cm 
pull 
 
filtration membrane 
 
 Seepage coefficient 
 
cm/s 
 
≥ 5x10-4 
 
≥ 5x10-4 
 
≥ 5x10-4 
 
≥ 5x10-4 
 
 24  
 
aperture 
 
µ/m 
 
< 75 
 
< 75 
 
< 75 
 
< 75 
 
98  
 
tensile strength 
 
 Vertical dry state 
 
N/cm 
 
≥ 15 
 
≥ 25 
 
≥ 30 
 
≥ 35 
 
 10% extension rate 
 
 Lateral wet state 
 
N/cm 
 
≥ 10 
 
≥ 20 
 
≥ 25 
 
≥ 30 
 
 15% 
extension rate 
 
Core board  
 
Appearance 
 

Pie form, middle rolled as a round 
 
 Structure 
 

Belt pressed to be harmonica shape 
 
 Raw material 
 

 PP , PE 
 
 Antibacterial index 
 

 No bacteria breeding 
 
 packing 
 
 length 
 

 
200 ± 2 
 
 40’ container 
 

 
186,000 
 
 Outer diameter 
 

 
1.20 
 
 Iner diameter 
 

 
0.16 
 

Application

1.Roads, Railways, Dikes and Airports

2.Land Reclamation

3.Harbor Construction

4.Urban and industrial sites


Features

1,Monolithic vertical drain is a new product to process soft foundation and super soft foundation on the basis of traditional pvd .
2,Fundamental element: Monolithic vertical drain uses ultrasound generator whose  vibration frequency is 5 billion HZ to firm filtration membrane and core board together.
3,Won't generate heat (maybe local tepefaction ) and peculiar smell, and need not gluewater and is harmless to workers' health when wrapping the core board by ultrasound.
4,The monolithic structure of PVD makes the connection more firmly and difficult peeling off. 
5,The draining board owns excellent rigidity and endures great side pressure, so it is not easily to be bent or fallen down and keeps good shape, which can insure tonnage and other technical parameter is stable.
6,Prefabricated vertical drain owns excellent tenacity. Its draining function will not be influenced when foundation subsides forcing the draining board bent.
7,The monolithic structure formed by filtration membrane and the core board, makes every waterspout to be a single one and the whole monolithic PVD won't be influenced by any local damage.
8,Prefabricated vertical drain owns good overall performance. It is easy to be processed for the good flexibility and weatherability, even the weather changes the filtration membrane won't peel off.

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