NILEX Inc.

Materials and Construction

for Earth and Water

Roads (Paved & Unpaved) Woven & Nonwoven Geotextiles; Geogrids; Paving Membranes &

Reinforcements.

MSE Systems (Mechanically Stabilized Earth Retaining Walls & Slopes) Precast Concrete Panels; Modular Concrete Blocks;

Steepened Slopes – vegetated & rock-faced.

Erosion & Sediment Control Erosion Blankets; Silt Fence; Geo-Ridge; Articulated Concrete,

Cellular & Gabion Revetments.

Drainage Strip Drains; Sheet, Wall & Deck Drains; Multi-Flow; Weeping Tile.

Containment Geomembranes & Geosynthetic Clay Liners (GCLs).

Ground Modification Wick Drains & Earthquake Drain Installation.

Nilex Applications:

Office Locations:

Edmonton-Head Office

Calgary

Burnaby

Vernon

Grand Prairie

Saskatoon

Winnipeg

GEOSYNTHETIC FUNCTIONS

• Separation

• Filtration

• Drainage

• Subgrade

Improvement

• Granular Base

Reinforcement

Non-Woven Geotextiles

• Needlepunched

• Spunbonded

SEPARATION FUNCTION

Without Geosynthetic With Geosynthetic

Separation Function

• For subgrade CBR’s <3, benefit roughly

equal to 150 mm of base gravel that would

otherwise be contaminated

FILTRATION

FILTRATION

APPLICATION

GEOSYNTHETICS

PRODUCT TYPE

FUNCTION NON-WOVEN

FABRIC

WOVEN

FABRIC

GEOGRID

BASE REINFORCEMENT

SUBGRADE IMPROVEMENT

SEPARATION

FILTRATION

DRAINAGE

Fabric

IN-PLANE DRAINAGE

Reinforcement Functions

• Subgrade Improvement

– Tension membrane - high deformation

– Geogrids & Geotextiles

• Granular Base Reinforcement

– Lateral interlock - low deformation

– Geogrids only

Subgrade

Improvement

for

Pavement Systems

Subgrade Improvement

Base Reinforcement

Base vs. Subgrade

A Geogrid System Changes The

Dynamics of Load Interaction With the

Subgrade

Granular Base Reinforcement

Lateral Interlock

Confinement

Subgrade Improvement

Local Success Stories

Alaska Highway / Ft. Nelson / Nov.6, 2003

An Everyday Problem

The Solution Step 1 - Place Geogrid Over Subgrade

The Solution Step 2 - Place Fill Over Geogrid

Field Test - Gravel Road Construction

Over Very Soft Soils

Performed By:

Steve L. Webster - U.S. Army Corps of

Engineers

January 1996

Typical Northern Application

Subgrade Improvement

Geogrid Installation

18”

Lift

Alaska Hwy/Clarke Bypass Ft Nelson

Problem - to reduce section and save material costs.

Solution - BX 1200 - 100 mm savings over 47,000 m2 = $170,000 saved

plus TBR of 5.0 for lower lifecycle costs

Cold Weather Application Clarke

Bypass/ SYD’s Road / Ft. Nelson

Clarke Bypass - end dump on

existing fill and push forward

Syd’s Intersection/ snap ties

Syd’s Road

Princess Ave./ Ft. St. John

Original Design Structure 50mm AC, 150mm of 19mm base, 300 mm of 40 mm base

Princess Ave - Original design includes perforated perimeter subdrain c/w drain rock

and Amoco 4551 Geotextile on subgrade compacted to 95%

The Problem - Due to poor subgrade conditions of saturated silty clays the subase

needed to be increased by 400 mm but unable do to so due to N.G. lines.

Princess Ave - The Solution - BX 1100 and Amoco 4551 saving sub- exc. of 300 mm

with associated costs and time on uncompacted subgrade

Princess Ave./ Ft. St. John

Princess Ave / Urban Systems/

Amec/ DGS/ City crews

Dawson Creek Walmart - Problem - reduce section and create uniform bearing for

parking lot 25,000 m2 BX 1200

Dawson Creek Walmart - Solution

BX1200 - reduce base course thickness by 150 mm and

25 mm reduction in base course - savings = $ 105,600.00

(net savings = cost of geogrid - cost of gravel savings)

Additional Success Stories

Annually - City of Dawson Creek - various roads

Annually - City of Ft. St. John - virtually all total reconstruct

roads

2002 - Presporto Road - 2800 m2, BX 1100

2003 - Pouce Coupe Sideroad 35,000 m2 of BX1100 and

geotextile

Annually - DGS Contractors - ongoing basis for public and

private projects

2002 - Beaton River/Dawson const. - 263,000 m2 Amoco 4551

Geotextile

MOT - on going basis

Design

Example

Confinement

1992 Corps of Engineers

Several Grids Tested

1992 Corps of Engineers

Several Grids Tested Control Section

No Geogrid

Severe Rutting

Tensar Section

BX1200 Geogrid

Rutting Controlled

Both Sections

2” of ACP

6” of Base

Subgrade CBR=3

2,016 Passes

1992 Corps of Engineers Results

0.9 0.9 11.6

3.4

4.7

0

1

2

3

4

5

TBR

Grid A Grid B Control Grid D Grid E Grid F

Traffic Benefit Ratio (TBR)

= Ratio of reinforced/unreinforced traffic repetitions

2” Asphalt Concrete

14” Aggregate Base

Subgrade CBR = 3

Rut Criteria = 1”