BCEIA BEST Conference - 2016

Environmental Applications of Jet Grouting

Whistler, BCMay 27, 2016

Stephen G. Custeau, P.Eng. ,MBAMATCON Environmental Ltd.

Outline

- History of Jet Grouting - How the technology works - Applications- Case Histories for environmental applications

Recochem Port CoquitlamNew Westminster PierJohn Hart Dam (cut off / ground improvement)

History of Jet Grouting

-Japan (CCP) 70’s

- Europe late 70’s

- NA – middle 80’s

How it worksSTEP 1 : DRILLING

STEP 3: PULL UP THE ROTATING JET

STEP 2 START JETTING WITH W/C GROUT MIX FROM THE BOTTOM

RESULT: ROUND COLUMN CONSISTING OF WATER/CEMENT MIX AND INSITU SOIL

Resulting Column

Geometry

Environmental Containment

Jet Grout Parameters

Flexibility

Range of Results

Single fluid Double Fluid Triple Fluid

Gravel 0.6-1.2 1.0-1.6 2.0-3.0 10-30 2,500-15,000Sandy Gravel 0.5-1.0 0.9-1.8 1.5-3.0 8-20 2,500-10,000

Silty Clay 0.5-1.0 0.8-1.5 1.2-2.8 5-15 2,500-7,500Clayly Silt 0.4-0.6 0.7-1.0 1.0-1.5 2-8 1,000-5,000

Clay 0.4-0.8 0.6-1.2 0.8-1.2 1-6 500-5,000

E (Mpa)Type of Soil Diameter (m) UCS (Mpa)

Hydraulic Conductivity = 10-6 to 10-9 m/sDepending on soil conditions and grout Mix (with or w/o bentonite).

Sheet1

Type of SoilDiameter (m)UCS (Mpa)E (Mpa)

Single fluidDouble FluidTriple Fluid

Gravel0.6-1.21.0-1.62.0-3.010-302,500-15,000

Sandy Gravel0.5-1.00.9-1.81.5-3.08-202,500-10,000

Silty Clay0.5-1.00.8-1.51.2-2.85-152,500-7,500

Clayly Silt0.4-0.60.7-1.01.0-1.52-81,000-5,000

Clay0.4-0.80.6-1.20.8-1.21-6500-5,000

Sheet2

Sheet3

QA/QC at Grout Plant

QC- Monitoring and recording jetting

QC- Monitoring and recording jetting

QA/QC- Monitoring / Recording

Verification

- Coring - Permeability tests (direct-indirect)- Cross/holes, tomography- Calipers- Load test in case of piles

Typical JG Projects•Shoring/Cut-Off/Underpinning:

North Vancouver - Parcel 5Richmond – The Mandarin False Creek- Olympic VillageNew Westminster- Multiuse Facility Centre

•Cut-Off (environmental)Recochem, Port CoquitlamNew Westminster PierJohn Hart Dam Zeballos Lake

• Soil Improvement for Settlement ControlNew Westminster- Clarkson & Sixth

• PilingRichmond – Paloma Parkade

•ShaftsNorth Vancouver- Esplanade & St. GeorgeIONA Treatment Plant (3 phases)

Recochem, Port Coquitlam

Port Coquitlam

Port Coquitlam

Port Coquitlam

Port Coquitlam

K= 10-7 cm/sec; 10-9 m/sec

New Westminster Pier

Location

The Options

The Site

The Site

Mapping the Columns

John Hart DamJohn Hart Dam

Location

Field Test

Production Area

Field Test Area

Field Test

Drilling Procedures

Pre-drilling and PVC installation

Field Test Results

Very Congested Site!

Spoil/Reflow storage tanks

Bentonite mud storage tanks

Grout mix plant

Spoil/Reflow Management

Spoil/Reflow Management

Real Time Control

QA/QC

As Built

Questions?

Stephen Custeau, P.Eng., MBA

MATCON Environmental Ltd.

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