JET GROUTING

Jumbo Eco Pile System

Large diameter Jet Grout ColumnAdaptable to various site requirements

(1)Large Diameter ColumnHardening agents are jetted with a high energy and discharge rate from double jet monitors to construct larger diameter im-proved columns(dia 3.5m).

(2)High Speed ConstructionDouble jet makes the process more efficient as compared to conventional jet grouting and shortens construction time.

(3)High Quality ProductIn-situ soil is cut into smaller pieces while two jets rotates and crosses in the ground.

(4)Cost EfficiencyThe large diameter improvement reduces the number of columns required.

ADVANTAGESADVANTAGES

APPLICABLE SOIL RANGEAPPLApplic

STANDARD MIXSTAN

APPLICATION EXAMPLEAPPL

PLANT CONFIGURATIONPLANT CONFIGURATION

Note:1) Wh2) Sep

Sa

Cohe

Effecti

Noto:1) JE-

Port

JEP

Pressure

Discharge Rate

Pressure

Discharge Rate

Pressure

Discharge Rate

Ultra-high pressure Jet (upper monitor)

Ultra-high pressureJet (lower monitors)

Compressed Air

Standard Discharge CapacityCutting Materials

Water

Hardening agents

40MPa

50L/min

35MPa or more

300L/min

1.05MPa

4 to 8m3/min

Triple-tube rodWaste treatmentJEP system

Ultra-high pressure

JEP pump

Ultra-high pressure

water pump

JEP machine Vacuum pump

Spoil

Slurry plant

Compressor

Water tank

Silo

CONSTRUCTION SEQUENCECONS

JEP

Compressed air

Ultra-high pressurehardening agents

Ultra-high pressure water

APPLICABLE SOIL RANGEAPPLICABLE SOIL RANGEApplicable soils and effective diameter of standard column

STANDARD MIXSTANDARD MIX STANDARD PRODUCT SPECIFICATIONSTANDARD PRODUCT SPECIFICATION

APPLICATION EXAMPLEAPPLICATION EXAMPLE

PLANT CONFIGURATION

Note:1) When the cohesion of the target ground exceeds 50kN/m2, separate study is required.2) Separate study is also required for sand and gravel layer.

Sandy Soil

Cohesive Soil 1)

Effective Diameter

0<N<15

0<N<1

3.5m

15<N<30

1<N<3

3.2m~3.5m

30<N<50

3<N<5

3.0m~3.5m

Noto:1) JE-01 for sandy soil, JE-02 for cohesive soil

Portland Cement

JEP admixtures 1)

Water

760kg

10kg

751kg

nt

Sandy Soil

Cohesive Soil

3

1

0.5

0.3

300

100

300

100

UCSqu (MN/m2)

CohesionC (MN/m2)

Adhesionf (MN/m2)

Tensile strengthO-

t (MN/m2)Deformation modulusE50 (MN/m2)

Coefficient ofhorizontal subgrade

reactionK (MN/m3)

C C13

23

CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE

(1) Set up (2) Drilling (3) Column construction (4) Completion

Improved column

JEP machine

drilling

Mixture of soil and agents

Hardening agent jetting

er

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2007.0160.01

4-2-35, Kudankita, Chiyoda-ku,Tokyo 102-8236 JAPANTEL. +813-3265-2506FAX. +813-3230-1709E-mail overseas@raito.co.jpURL http://www.raito.co.jp