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Growmat; Drainage Mat; Bentonite; Geogrid; Geomembrane; Geotextile; Grassroad Paver; Root Barrier


Nylex Cordrain /18

Nylex Cordrain

Geocomposite Drainage Layer

Nylex Cordrain provides an efficient, economical vertical drainage of walls and other subground structures.

Cordrain has been specifically designed to reduce hydrostatic pressure behind structures such as retaining walls and bridge abutments. It is also ideal for draining foundations and basements, reducing the likelihood of structural damage caused by foundation movements in expansive soils. The impermeable core provides the added benefit of assisting in the waterproofing of structures which may reduce the functional requirement of a tanking membrane.


Nylex Cordrain Product Description:

Cordrain is a geocomposite vertial drainage blanket which consists of a plastic cuspates inner core (cuspation on both sides) over wrapped with a heat-bonded, non-woven geotextile filter fabric bonded on one side only.

Cordrain Applications:

  • Building basement / cellars
  • Retaining walls
  • Bridge abutments
  • Culverts
  • Tunnel Lining

Design Benefits of Nylex Cordrain:

  • High Flow drainage capacity
  • Effectively reduce hydrostatic pressure behind structure walls
  • Provide an airlock between drainage layer and wall
  • Assist in the waterproofing of structures
  • Non-clogging
  • High compressive strength
  • Reduce the likelihood of structural damage caused by foundation movements in expansive soils

Economic Benefits of Nylex Cordrain:

  • Cost saving
  • Typically eliminates the need for aggregate or sand backfill.
  • Lightweight and flexible
  • Easy to handle and quick to install.

Nylex Cordrain / 18

Nylex Cordrain design detail - retaining walls, bridge autments and culverts (not to scale)
Nylex Cordrain for tunnel drainage lining

Magnified cross-section of Cordrain and soil filter


How Cordrain Works:

Cordrain is wrapped with a heat-bonded non-woven geotextiile and in the vast majority of soil the geotextile ensures stable filtration of the adjacent soil.

A soil filter develops within the first few millimetres between the soil mass and the geotextile. As water passes from the original soil into the drain, it washes a few small particles for a short period of time after installation.

As the small particles are washed through, a bridging network of larger particles builds up against the geotextile. This network prevents further small particles from eing washed through, stabilizing the soil and allowing only water to pass through the system.



Product Specifications of
Nylex Cordrain

Model
Cordrain /18
Geotextile Wrap
Wide width strip tensile AS 3706-2
Mean peak strength

9kN/m MD 8kN/m D

G rating QMRD
G Value

>1000Nmm0.5

G classification
Mod Robust
Pore size AS 3706.7
ESO O95
120gm
Permeability AS 3706.9
Flow rate - 10cm head
>275l/m2s
HDPE Plastic Core
Core profile
Raised cusps on both sides (square shaped)
Mass
900g/m2
Colour
Black
Fungus resistance
Excellent
Crush strength
250kPa
Core thickness
18mm
Geocomposite
Widths
1200
Roll lengths

25m

Packaging
P.E. bag
* Nylex reserve the rights to substitute the geotextile fabric.

Nylex Cordrain /18 for planter drainage of PCCW Cyberport project I.L. 8969
Nylex Cordrain /18 for drainage of PCCW Cyberport project Nylex Cordrain /18 for drainage of PCCW Cyberport project Nylex Cordrain /18 for drainage of PCCW Cyberport project
Nylex Cordrain /18 for soft landscape works of The Hong Kong Polytechnic University Phase VI Development
Nylex Cordrain /18 for drainage works of PolyU Phase VI development Nylex Cordrain /18 for drainage works of PolyU Phase VI development Nylex Cordrain /18 for drainage works of PolyU Phase VI development
Cordrain /18 for Planter Drainage of CityU Student Hostel
Nylex Cordrain /18 for drainage of CityU Student Hostel Nylex Cordrain /18 for drainage of CityU Student Hostel Nylex Cordrain /18 for drainage of CityU Student Hostel
Cordrain /18 for foundation work
TCC500 - KCRC East Rail Extension Maintenance Depot
Nylex Cordrain /18 for drainage at KCRC East Rail Extension Depot Nylex Cordrain /18 for drainage at KCRC Nylex Cordrain /18 for drainage at KCRC East Rail Extension Maintenance Depot
Nylex Cordrain /18 for drainage of Tai Po Kau Retaining Wall Construction TPTL 150
Nylex Cordrain /18 for Tai Po Kau Retaining Wall Construction TPTL 150 Nylex Cordrain /18 for Tai Po Kau Retaining Wall Construction TPTL 150 Nylex Cordrain /18 for Tai Po Kau Retaining Wall Construction TPTL 150
Cordrain /18 for ASD HKSAR - Construction of Education Resource Centre Communication Public Transport Interchange at Kowloon Tong
Nylex Cordrain for drainage of Public Transport Interchange at Kowloon Tong Nylex Cordrain for drainage of Public Transport Interchange at Kowloon Tong Nylex Cordrain for drainage of Public Transport Interchange at Kowloon Tong
Cordrain /18 for ASD HKSAR Project
Departmental Quarter at Lai Chi Ling Road
Cordrain /18 for ASD HKSAR Project Cordrain /18 for ASD HKSAR Project Cordrain /18 for ASD HKSAR Project
Cordrain /18 for Hong Kong Housing Society
Hung Hom Bay Development
Nylex Cordrain /18 for Hong Kong Housing Society - Hung Hom Bay Development Nylex Cordrain /18 for Hong Kong Housing Society - Hung Hom Bay Development Nylex Cordrain /18 for Hong Kong Housing Society - Hung Hom Bay Development
Cordrain /18 for draiinage of
fHigh Cliff 41D Stubbs Road Project
Nylex Cordrain for HIGHCLIFF project Nylex Cordrain for HIGHCLIFF project Nylex Cordrain for HIGHCLIFF project
Nylex Cordrain /18 for soft landscape works in 'The Waterfront' project
Nylex Cordrain /18 for soft landscape works in The Waterfront project Nylex Cordrain /18 for soft landscape works in The Waterfront project Nylex Cordrain /18 for soft landscape works in The Waterfront project
Nylex Cordrain /18 for podium garden drainage
Bellagio - Sham Tseng
Nylex Cordrain /18 for podium garden drainage of Bellagio `ѳbq Nylex Cordrain /18 for podium garden drainage of Bellagio `ѳbq Nylex Cordrain /18 for podium garden drainage of Bellagio `ѳbq


Prestige Clients / Consultants Using Nylex Root Barrier:

  • ASD, HKSAR
  • Hong Kong Housing Society, HKSAR
  • Hong Kong Housing Authority, HKSAR
  • KCRC
  • The Hong Kong Polytechnic University Phase VI Development
  • City University of Hong Kong
  • PCCW
  • Ove Arup & Partner, H.K.
  • Maunsell Consultants Asia Ltd
  • Maunsell Geotechnical Services Ltd
  • Edaw Earth Asia Ltd
  • Yau Lee Construction Co., Ltd
  • Dennis Lau & Ng Chun Man Architect & Engineers (H.K.) Ltd
  • Education Resource Centre Communication Public Transport Interchange at Kowloon Tong
  • Gammon Skanska Ltd.
  • Improvement works to Island Eastern Corridor
  • Kwong Lam Garden
  • Ngo Kee Construction
  • Zen Pacific - China State - Ngo Kee J.V.
  • West Rail, KCRC
  • T.P.T.L. 150 Tai Po Kau
  • Kai Tai Construction and Engineering Co., Ltd
  • Scott Wilson (Hong Kong) Ltd
  • Cyberport Development I.L. 8969 at Telegraph Bay
  • Belt Collins Hong Kong Ltd
  • Pegasus Greenland Ltd
  • Cheung Kong Centre, Queen's Road Central
  • Paul Y - ITC Construction Ltd
  • Leo A Daly
  • Highcliff, 41D Stubbs Road
  • Yee Sun Garden Ltd
  • Dragages / Bougues Construction
  • Departmental Quarter at Lai Chi Ling Road
  • Chun Wo Construction & Engineering Co., Ltd
  • Bellagio, Sham Tseng
  • Kumagai Gumi Co Ltd
  • Ocean Shores Phase 2
  • Wong Tung & Partners Ltd
  • Oriental Landscapes Ltd
  • Sanfield Building Contractors Ltd
  • Sau Mau Ping Phase VI & VII
  • Hung Wan Construction Co., Ltd
  • Fanling Primary Health Care Centre
  • China State Construction Engineering (Hong Kong) Ltd
  • RMJM Hong Kong Ltd
  • Joseph Chow & Partners Ltd
  • Meinhardt (M&E) Ltd
  • The Mission Covenant Church Holm Glad Primary School
  • The Water Front, Tsim Sha Tsui
  • St. Teresa Hospital Extension, Lomond Road K.I.L. 10721
  • TDD Contract No. TM88/98 - Foothills Bypass and associated slope stabilization works
  • Basement Drainage, 223-231 Wai Yip Street
  • E Man Construction Co., Ltd
  • Heng Lai Construction Co., Ltd

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