Speaker: Volker Fitz, EIRICH Head Office - iranconmin.de · Translucent concrete: Optical fibers are added (3-5% glass fiber) to make the concrete translucent Self-cleaning concrete:

1© Maschinenfabrik Gustav Eirich GmbH & Co KG

Author: Volker FitzAdvanced Mixing Technology for Concrete – cost efficient and environmentally friendly

Cordially Welcome!

The EIRICH Mixing Technology Advanced Mixing Technology for Concrete

–

cost efficient and environmentally friendly

The EIRICH Mixing Technology Advanced Mixing Technology for Concrete

–

cost efficient and environmentally friendly

Speaker: Volker Fitz, EIRICH Head Office



The EIRICH management team

Hubert Eirich

PaulEirich

Stephan Eirich

Ralf Rohmann

EIRICH introductionEIRICH introduction

• Founded in 1863 by Gustav Eirich

• Family owned company - 4 th/5th generation

• Development to a medium-sized enterprise

• Headquarter GERMANY – 630 employees



1.200 employees in 11 countries on 5 continents1.200 employees in 11 countries on 5 continents

Companies in the EIRICH Group

Chicago

Hardheim

DnepropetrovskLyon

Moskau

BeijingJiangyin

Shanghai

TokioSeoul

Johannesburg

Sao Paulo

Mumbai

more than 33.000 mixers and plants sold worldwide

more than4500 mixer

and plants inMiddle East & Asia

more than 24.000 machinesrunning worldwide



Development of the EIRICH mixerDevelopment of the EIRICH mixer

Start of mixer construction

Mixing efficiency

Ringthrough, invented 1903by EIRICH

Planetary mixer, invented 1906 by EIRICH

Countercurrent EIRICH Intensive Mixer 1924

Countercurrent EIRICH Intensive Mixer with agitator1960

Countercurrent EIRICH Intensive Mixer with inclined pan 1972

Videolink

Videolink



EIRICH Mixing Technology

� Better distribution of fine components

� Saving of cement / admixtures / chemicals

� Constant high concrete quality

� High reproducibility

� Lower concrete product reject rates

� Lower maintenance & wear costs

� Perfect concrete surfaces

� Significant less finishing work for precast parts

Advantages of EIRICH Intensive Mixing Technologyfor concrete batching plantsAdvantages of EIRICH Intensive Mixing Technologyfor concrete batching plants



conventional mixersconventional mixers

Working principles in comparison

High number of mixing tools… higher wear…

… and plenty of room for material accumulations

� Severe wear

� This often requiresceramic linings

� Disadvantage: Costly and lengthystoppages forrenewing the lining



Mixer feedingMixer feeding

Working principle EIRICH mixer

Direct feeding into the rotatingmixing pan, avoiding any material caking on mixing arms



Power inputPower input

Working principle EIRICH mixer

Energy input with EIRICH intensive mixers can be co ntrolled in a widerange through the speed, direction and design of th e mixing tool

Conventional mixersoperates in this range only

Star-type rotor

Drum-type rotor

Pin type rotorrotating clockwise

Pin type rotor rotatingcounter clockwise

Star / Drum type rotor Pin-type rotor



Using EIRICH mixing solutionsUsing EIRICH mixing solutions

Advantages of EIRICH preparation solutions

High tool speeds are optimal for modern concretes

Fun

nelf

low

time

[sec

]

Funnel flow timeSlump flow

Mixing tool tip speed [m/sec]

Conventional mixersoperates in this

range onlyOptimum

speed

Leipzig Institute for MaterialsResearch and Testing



Definition of the mixing processDefinition of the mixing process

The preparation process

� Distribution Distributive mixing

Uniform distribution of all particles

� Dispersion Dispersive mixingDisaglomeration and Distributionof particle lumps

Low shear forces(for grain, water etc.)

High shear forces(for fines, microsilica, chemical admixtures)

Source: wikipedia.org/wiki/Compoundierung




EIRICH mixers produce a higher quality of mix

research results by Mr. Fons Rikken

Comparison of mixing systemsComparison of mixing systems



Fluctuations in color intensityFluctuations in color intensity


0

20

40

60

80

100

120

140

160

Shaft mixer Planatary EIRICH

Horizontal shaft mixer126 – 160 units

Fluctuation of 34Planatary pan mixer

99 – 132 units

Fluctuation of 32EIRICH Intensive Mixer

136 – 144 units

Fluctuation of 8

Bayer AG, 3 paving stones, each with 2 measuring po ints. Compared with a reference stone with the value 100

EIRICH mixers produce a better distribution of pigmentsInstitut für Fertigteiltechnik und Fertigbau Weimar e. V. „Untersuchungen zur Mischgüte von Vorsatzbetonmischern 2003“



Customer test report from IndonesiaCustomer test report from Indonesia


Eirich Mixer

Twin ShaftMixer

Test made with severalcustomers in Indonesiashowing similar results.











Typical precast plantTypical precast plant


400 m³ per day → 120.000 m³ per year (300 days)

Assuming cement savings of only 10% results in:

→ approx. 50 kg less cement per m³ concrete

→ means total cement savings of 6.000 t / year

→ with a cement price of 1 Million Rupiah per ton

the saving in cement costs per year is worth

6 Billion Rupiah / year (450.000 USD / year)

(kehutungan Rp 6 Milliar per tahun)




This calculation does not take into account the additional costs of reject losses, disposing of the rejects and supplying replacement products.

The difference in price for the EIRICH mixing solutions pay back within months!



Testing – Developing – Optimizing at EIRICH test centerTesting – Developing – Optimizing at EIRICH test center

Innovations



Concrete Industry in TransitionConcrete Industry in Transition

Innovations

„New“ concrete materials

� Self-compacting concrete (SCC):

SCC for short, compaction without vibration, using suitable recipes or admixtures

� High-performance and ultrahigh-performance concrete (HPC & UHPC):

HPC / UHPC for short, cement with high compressive strength, high-performance liquefier, possibly fine additives (microsilica). Often very fluid, little maximum-size grain

� Translucent concrete:

Optical fibers are added (3-5% glass fiber) to make the concrete translucent

� Self-cleaning concrete:

Superhydrophobic or superhydrophilic (similar to lotus effect),through adding admixtures to the mixing process….

� Fiber, Polymere & Colour concrete



Concrete Industry in TransitionConcrete Industry in Transition

Innovations

1,0 0,8 0,6 0,4 0,2 0

Normal concrete

High-strength concrete

Ultra high-strength concrete

50

100

150

200

250

0Co

mp

ress

ive

stre

ng

th[N

/mm

²]

Equivalent water cement value [-]

� Normal concrete

(fck,cube ≤ 67 N/mm²)

� High-strength concrete

(67 N/mm² ≤ fck,cube ≤ 115 N/mm²)

� Ultra high-strength concrete

(fck,cube ≤ 115 N/mm²)

Practice: fck,cube = 115 - 230 N/mm²

Laboratory: fck,cube ≤ 800 N/mm²

Development compressive strength

of concrete



From 1 liter to 12,000 litersFrom 1 liter to 12,000 liters

A look at the preparation solutions

4.000 to 5.000 liters – R28

3000 liters – RV24

900 liters – RV16 1.500 to 3.000 liters – D23



Plant engineeringPlant engineering


typicalEIRICH tower plant

for concrete batching

typicalEIRICH in-line plantfor concrete batching

� Raw Material Transportationand Storage

� Dosing & Weighing� Mixing & Distribution� Plant control system� Revamping of existing plants

(mixer exchange)



Plant engineeringPlant engineering


Manufacturer of high-grade prefabricated concrete elements



Concrete References



Extract of concrete references



Extract of concrete references



Research & Development Partners



ApplicationsApplications

The preparation process

� Concrete for housing elements

� Concrete for structure elements

� Concrete for drainage channels

� Railroad sleepers concrete

� Fiber & Polymere concrete

� Concrete for roofing tiles

� Coloured facing concrete

� Concrete with special properties

� High performance concrete & UHPC

� High-performance fiber concrete

� High-performance lightweight concrete

� Self-compacting concrete

� Suspension concrete

� Foamed concrete

� Ready-Mix concrete

Various consistencies can be treated in one and the same mixer



Summary of EIRICH mixing process advantagesSummary of EIRICH mixing process advantages


� Much higher homogeneity of the mixturedue to better material flow with rotating mixing pan

� Through perfect dispersion, 5 - 15% of cement can be saved.

� High mixing qualities obtained in shortest mixing timeand higher throughput rates

� Quickly obtained stable moisture measurement

� Water distributed more effectively

� Consumption of binders, pigments and chemicalscan usually be reduced by up to 15%

� Significant lower wear and maintenance costsand therefore higher availability of the plant

� Reject rates much lower, particularly for visible surfaces errors

� Only 1 (2) mixing tool(s) for mixer sizes up to 4,000 liters



EIRICH Mixing Technology

In case of any question,

please feel free to

contact us at any time …

Representative: Mr. Volker Fitz

email: [email protected]

phone: +49 6283 51331

mobile: +49 151 150 38 751



Worldcup Soccer Stadium, Johannesburg

Thank you for your attention !

Facadepanels mixedby EIRICH!

Documents

Speaker: Volker Fitz, EIRICH Head Office - iranconmin.de · Translucent concrete: Optical fibers are added (3-5% glass fiber) to make the concrete translucent Self-cleaning concrete: