Remedial Works by Grouting in Subaqueous Environments

Remedial Works by Grouting in Subaqueous Environments

Concrete Institute of Australia
17 September 2013 - Perth
Remedial Works by Grouting in Subaqueous Environments
Babak Hamidi
Remedial Works by Grouting in Subaqueous Environments
Main Injection Grouting Technologies
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Permeation Grouting
Jet Grouting
Compaction Grouting
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Cavity Grouting
Compensation Grouting
Hyrofracture Grouting
Rock Grouting
Raine Square Tunnel, Perth CBD
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Remedial Works by Grouting in Subaqueous Environments
Main Objectives of Grouting
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Improving geotechnical
parameters
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Increased bearing capacity
Reduced settlement
Liquefaction mitigation
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Reduction of permeability
Retaining ground
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Remediation
Solidification
Balannup Pump Station II, Perth
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Remedial Works by Grouting in Subaqueous Environments
Permeation Grouting
Grout filling of accessible pores between the solid particles in a permeable soil. This
technique is generally used to reduce permeability and/or to strengthen and stiffen the
ground
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Remedial Works by Grouting in Subaqueous Environments
Permeation Grouting: Material
cement
bentonite
micro fine cement
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Remedial Works by Grouting in Subaqueous Environments
Permeation Grouting: Spearing
Perth Station Forward Works
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Delphia Apartments
Remedial Works by Grouting in Subaqueous Environments
Permeation Grouting: Drilling
Mine Site, WA
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Remedial Works by Grouting in Subaqueous Environments
Permeation Grouting: Tube à Manchette
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Remedial Works by Grouting in Subaqueous Environments
Permeation Grouting: Plant
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Remedial Works by Grouting in Subaqueous Environments
Permeation Grouting: end product
Delphia Apartments
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Remedial Works by Grouting in Subaqueous Environments
Jet Grouting
Jet grouting is a family of processes that employs combinations of high energy jets of air, water and grout to disaggregate, partially or
fully replace and remix soil in situ.
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Remedial Works by Grouting in Subaqueous Environments
Jet Grouting: Parameters
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Remedial Works by Grouting in Subaqueous Environments
Jet Grouting: Plant
Cement silo
Mixing plant & agitator High pressure pump
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Remedial Works by Grouting in Subaqueous Environments
Jet Grouting: Test Samples
Cube samples from spoil
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Core samples
Remedial Works by Grouting in Subaqueous Environments
Jet Grouting: Below Groundwater Applications
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Remedial Works by Grouting in Subaqueous Environments
Jet Grouting: Soft – Hard Walls
Jet Grouted columns installed between gaps
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Structural Piles
Remedial Works by Grouting in Subaqueous Environments
Compaction Grouting
The injection of stiff mortar or paste instead of grout to displace
and compact the soil in situ, thus improving its engineering
characteristics
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Remedial Works by Grouting in Subaqueous Environments
Compaction Grouting
D
C
B
grout
Plastic deformations
Pseudo-elastic deformations
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A
Remedial Works by Grouting in Subaqueous Environments
Compaction Grouting: Material
Mortar shall be pumpable under high pressure;
Injection should not induce soil fracturing;
Mortar pressure should not limit expansion due
to segregation of material or water expulsion
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Remedial Works by Grouting in Subaqueous Environments
Compaction Grouting: Material
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Remedial Works by Grouting in Subaqueous Environments
Case Study 1: Sydney Aquarium Quay Wall
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Remedial Works by Grouting in Subaqueous Environments
Sydney Aquarium: Condition
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Remedial Works by Grouting in Subaqueous Environments
Sydney Aquarium: Solution
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Remedial Works by Grouting in Subaqueous Environments
Sydney Aquarium: Construction
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Remedial Works by Grouting in Subaqueous Environments
Sydney Aquarium: Construction
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Remedial Works by Grouting in Subaqueous Environments
Sydney Aquarium: Construction
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Remedial Works by Grouting in Subaqueous Environments
Sydney Aquarium: Construction
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Remedial Works by Grouting in Subaqueous Environments
Sydney Aquarium: Construction
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Remedial Works by Grouting in Subaqueous Environments
Case Study 2: Port of Brisbane Wharves 4 & 5
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Remedial Works by Grouting in Subaqueous Environments
Port of Brisbane: Conditions
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Remedial Works by Grouting in Subaqueous Environments
Port of Brisbane: Solution
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Remedial Works by Grouting in Subaqueous Environments
Port of Brisbane: Compaction Grouting
Triangular grid with spacing= 2 m
5 depths, Max treatment depth= 6 m
Grout Mix
Cement
Fly ash
Coarse sand
Medium sand
Fine sand
Plasticizer
Slump
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Remedial Works by Grouting in Subaqueous Environments
Port of Brisbane: Compaction Grouting
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Remedial Works by Grouting in Subaqueous Environments
Port of Brisbane: Jet Grouting
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Remedial Works by Grouting in Subaqueous Environments
Port of Brisbane: Jet Grouting
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Remedial Works by Grouting in Subaqueous Environments
Port of Brisbane: Jet Grouting
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Remedial Works by Grouting in Subaqueous Environments
Thank You
Geotechnical Specialist Contractors
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