concrete pipes - manhole, drainage

7/28/2019 Concrete Pipes - Manhole, Drainage

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Dramix

Concrete Pipes Roadmap


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Dramix



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Mr Joseph Monier, French civil engineer, invent in 1890 the

first concrete pipe to drain away waste water of Paris town.

1890 First concrete pipes



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The first reference was realized in 1890 wit

350 Km of circular and ovoid concrete pipes.

1890 First realisation



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1890 First cushing test



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OVALISATION=

COLLAPSE

INELASTICITY

Concrete is not ductile



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Concrete pipes origin



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OVALISATION

COLLAPSE

COLLAPSE

DUCTILITY

SFRC Pipes



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How to caste concrete pipes

with Galvanized steel fiber in

our industry today?




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Dramix

Agenda: Basic Information

1. Pipes production machines

2. Concrete steel fibre3. Production process

4. Production advantages


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Dramix


A. Vibro-compression

B. RadiocompressionC. Spinning and rolling


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Basic Information Pipes production machines

Vibration

Spinning

Rolling

Pipes production machines

The compatibility of steel fibres with pipe producing

equipment isdependent on the way the concrete pipe is

compacted. Mainly, there are 3 compaction methods:


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A. Vibration and compression system

The axis of the pipe is vertical

The SFRC is delivery by a conveyor belt



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Center of the mouldVibrated system

Concrete Pipe

Concrete is poured between an internal and external mould

The mould vibrate


A. Vibration and compression system


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The axis of the pipe is vertical


B. Radial compression


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The concrete is compacted during the course

of the radial pressing process.

The pressing action is effected by the rotatingpressing tool consisting of the distributor head,

which rotates in the opposite direction of the

pressing head.




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Radial Pfeiffer Schlosser



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The axis of the pipe is horizontal


C. Spinning and rolling system


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Rolling

Here the axis of the pipe is vertical.

The pipe is compacted via quickly

rotating cylinders, positioned on a

vertical shaft, pressing the concrete

against the outer mould.




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Basic Information


Spinning and Rolling


Vibro-compression

Radial-compressionOUI NON


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Dramix






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Dramix

2. Concrete steel fibre

A. Mix proportion

B. Handling & dosingC. Mixing


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To exceed the positive effect of CSF, we need to adapt the concrete proportion

according to: the size and quantity of the aggregates

ratio G/C and G/S

Size 4 mm Size 32 mm

Concrete steel fibre

A. Mix proportion


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The influence of the dosage of steel fiber need to be calculate according grading zone.


A. Mix proportion


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The optimization of the concrete proportion has an immediate effect of:

Workability of the CSF

Placing and mould fillingFinishing of the pipe

T.Q.M. (Total Quality Management)


A. Mix proportion

x


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The precasters use Dramix Tanker automatic dosing equipment to introduce the

steel fibers into the industrial concrete production process.

2400lbs

1200 lbs/ min


B. Handling and dosing

Exact dosing of the Dramix steel fibres

Increased productivity

Increases the occupational safety

Bulk deliveries up to 1100 kg

Dramix TANKER 1100: removable trayDramix ANKER 1500: dosing speed of

150 kg/min


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Lifting of Big bags




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On conveyer belt with sand

and aggregates




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Steel fibers need to be add in

the same moment than granulate

and sand.

The addition of Steel fibers could

be into a skip or on the belt

conveyor of granulate and sand.


C. Mixing


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In case a turbo pan mixer is used:

Add the glued fibers to the prepared medium

or high slump concrete.

Use max 80% of capacity.


C. Mixing


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Dramix






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3. Production process

A. Vibration process

B. Radial process


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How we could Produce a less expensive pipes and increase the production without

diminishing the quality and final performance of the pipe?

Production process



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Mix Proportion

The mix proportion is the

cornerstone to achieve a TQM inthe plant.

Precasters are experts in concrete

proportion and must master all its

parts.

Bekaert is your partner to help you

to achieve a perfect SFRC.

Production process



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Vibration process

Since 25 years, vibro-compression process is the

most commonly used to produce SFRC Pipes.

It is well adapted for SFRC but some elements

need to be adapted to produce in TQM.

Production process



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Workability of the CSF

Placing and mould filling

Finishing of the pipe

T.Q.M. (Total Quality Management)

Production process


Mix Proportion Vibration

process

x

The optimization of the concreteproportion has an immediate effect of:


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Production methods

SFRC is going to change the workers habits and we needs to use the

competencies of manufacturing machine operators.

Production process



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Production methods

Some adaptation about

the vibration could benecessary.

Production process



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Customers reference with Vibro-compression machine

ColleSpain, Italia,

France, Belgium,

Morocco

Vihy Pedershaab + Hawkeye

Italia, France, Belgium, Sweden, Austria, Netherlands

CRH is a stronger partner with

6 plants in Belgium

4 plants in France

1 plant Austria and Netherlands

Production process



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The radial process need

more adaptation than the

vibro-compression process.

Production process

B. Radial process


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We have a fibre for this

process of production due to

the roller effect.

Production process

B. Radial process


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Production process

B. Radial process


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The 4 largest plants in

Europe have radial

production machine.They use Dramix Green since

several years.

Production process

B. Radial process


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The production process

requires us to brush the

head of the pipes.

Production process

B. Radial process


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Production methods

SFRC is going to change the workers habits.

It improves the cleanliness of the plant and facilitates the movement of people.

Production process

B. Radial process


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Production methods

SFRC is going to change the safety environment of the plant.

Production process

B. Radial process


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Dramix

The next success storycan be yours

www.bekaert.com

concrete pipes - manhole, drainage

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