KEIM CONCRETAL ®
THE BEAUTY OF CONCRETE!

CONCRETE IS THE
MOST WIDELY USEDBUILDING MATERIAL
IN THE WORLD.

keim concretal® – the beaut y of concrete!

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CONCRETE – A BUILDING
MATERIAL AS VERSATILE AS LIFE.

REVIVAL OF A BUILDING MATERIAL
Cold, grey, dull – for a long time concrete unfortunately
had quite negative associations. This mix made ofcement, sand and water had a real image problem
even though it is the most used building material
worldwide. But times have changed and today
concrete is once again taking its rightful place as a
reputable building material. Planners, designers orbuilders – they all appreciate the raw and original
aesthetics of fair-faced concrete.

CONCRETE COSMETICS
Sometimes concrete behaves like a diva and tends
to have unexplainable streaks, discolouration or
blowholes that affect the surface appearance
substantially. At this point the concrete glaze comes
into play, a mineral stain which, when diluted in various degrees, helps to conceal visual shortcomings sothat the finish looks like original intented. This special
kind of cosmetics has already salvaged a number offamous buildings by reviving its concrete surface.

COLOUR MEETS CONCRETE
Whether the facade or the interior– the modern
possibilities of designing and finishing concrete havean unlimited potential. A colour finish in glazing
technique for example with tinted semi-transparent
coatings enhances the character of the concrete,underlines its unique texture and mineral beauty.

„Concrete is a very demanding
material. The beauty of what
you create emerges when you
respect the building material‘snature.“ Louis J. Kahn

CONCRETE?
NATURALLY!

MOTHER NATURE PROVIDES
THE INGREDIENTSThe basic recipe for concrete is very simple and nature
supplies everything needed: Cement from limestone
and clay, sand, gravel and water. Cement is anindispensable element for concrete production andwhen combined with water, cement paste is produced.
In this way the elements bind together forming into
hard rock.
THE MIX MAKES THE DIFFERENCE!
Concrete is not always the same. Different kinds ofconcrete are manufactured with different formulations
depending on the feature requested: Load-bearing
capacity or safety, thermal protection, moistureprotection, fire or sound protection.

Unlimited possibilities inevery sense: Design function,indoor climate, fire or soundprotection. No other building
material is as versatile asconcrete!

keim concretal® – the beaut y of concrete!

5MINERAL PAINTS FOR A
MINERAL BUILDING MATERIAL!

Sonnenlicht

Pigment

Sonnenlicht

Pigment

ilchiges Bindemittel

onnenlicht

Sonnenlicht

Pigment

SILICATE PAINTS ON CONCRETE
milchiges
Bindemittel
transparentes
Silicatepaintmaterials do notform aBindemittel
film on theconcrete surface like synthetic resin based coatings.
The binding agent is a water-soluble potassium waterglass which forms an insoluble bond with the substrateby a chemical reaction, the so-called silicification.

COMMON DISPERSION PAINTS
Sunlight

Sunlight

the piGment is coated
By the milKy Binder. liGht
reflection is dull and flat.

Sonnenlicht

CRYSTALLINE REFLECTION
Mineral binders allow light rays to hit the colour
pigment directly creating a brilliant reflection bringing
the structure to life. The texture is coated but still
Sonnenlicht
Sonnenlicht
shines through. This retains and even enhances thePigment when concrete parts under thematerial character
surface show in places a different absorbencytransparentes
Bindemittel colour intensities.
resultingin different
Sunlight

MilkybinderPigment

Transparent
binderPigment

KEIM SILICATE PAINTS
Sunlight

the piGment is emBedded intransparent water Glass,
Pigment

milchiges Bindemittel

liGht reflection that underlines the structure.

transparentes Bindemittel
MilkybinderSonnenlicht

creatinG direct and Brilliant

Pigment

Pigment

Transparent
binderPigment

keim concretal® – the beaut y of concrete!

MINERAL NATURE OF THE CONCRETE LOOK
Matt, silicate coatings look much more natural thansynthetic coatings. Dispersions lead to dry layer
thickness between 0.3 mm and 0.5 mm thus levelling
irregularities and cover the material texture of theconcrete. Appearance and haptics are distorted,violating the natural beauty of the concrete.
Mineral coatings don‘t overlay the natural concrete
texture, in fact they accentuate. This is especiallythe case when the application is performed inglazing technique with semi-transparent up to highly
translucent coatings. Mineral paints, stains and glazes
retain the aesthetic of the material even with a colour
design and provide clearly more flexibility than tinted
concrete.

Design in glazing technique with different dilution degrees„Concrete has a rough quality
which I like. Architecture
should have a vital, earthy
charisma and not look smoothand polished.“ Zaha Hadid

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KEIM CONCRETAL® – PROTECTIONTHAT VALUES AESTHETICSPROTECTION AND AESTHETICS
Possible concrete decay and necessary protection
grades on one hand and the implementation ofarchitectural intention on the other hand often seemto be contradictory. But the demand for design andrequirements for preservation and protection do not
exclude each other. Quite the contrary is true!
KEIM protects concrete efficiently and retains at thesame time its mineral character.

A PLUS OF OPTIONS
A differentiated diagnosis of the concrete surface
that needs treatment opens up an entire row ofindividual protection and design possibilities.
Concrete can be whitewashed, colour washed,
painted, glazed or coated with a render material.
It can also be treated with a water repellent or CO2
protection. Any design variant provides a different
appearance and impression.

KEIM Concretal is mineralmatt protection and pureconcrete aesthetics!

BENEFITSKEIM Concretal is convincing:– Low diffusion resistance which means fast 		
redrying and excellent moisture protection– UV-stable and absolutely light-resistant– Highly weather-resistant– Unequalled durability– Natural, matt concrete appearance– Non-combustible– Easy to renovate

keim concretal® – the beaut y of concrete!

9keim concretal® – the beaut y of concrete!

KEIM CONCRETAL®-LASUR
PURE AESTHETICS
Fair-faced concrete – one of the biggest challenges and at the same time an important element in architecture.
Contrary to highly synthetic-modified systems the mineral glaze highlights the natural character of concrete ina unique way and provides an additional weathering protection. KEIM Concretal-Lasur offers unlimited design
possibilities – from highly transparent to opaque – and is definitely much more flexible and economical thantinting concrete!

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keim concretal® – the beaut y of concrete!

KEIM CONCRETAL®-LASURREFINES THE LOOK OF CONCRETE

FOR HIGHEST DEMANDS
Protection and finishing of fair-faced concrete surfaces
is always associated with two aspects: A definitionof protection requirements that are suitable for thesituation and condition and the preservation of thecharacteristic look of concrete surfaces.
KEIM Concretal-Lasur combines both demands andrepresents on the market an exceptional system.
SENSATIONAL DESIGN ELEMENT
Concrete as building material characterises our building
environment significantly. It defines the character ofindividual constructions or entire residential areas andit influences the urban landscape and working environments. The focus of planners and builders is more andmore oriented towards the aspects of design.
Architects especially appreciate the chance to be able
to use the same material for both the construction andthe design.

BENEFITS– Original concrete aesthetics– Retaining of texture and structure– UV-stable– Perfect equalisation of unevenly appearing
fair-faced concrete surfaces– Strengthening action by silicification

Nachher

beforeafter

beforeafter

KEIM Concretal-Lasur was applied semi-transparent to the concrete surface to enhance the character und to underline thetexture, the inner structure and the visual feature.

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keim concretal® – the beaut y of concrete!

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EVERYTHING GREY IN GREY
OR BETTER COLOURFUL?
WE CAN DO BOTH!
THE CHOICE IS YOURS!
KEIM Concretal-Lasur-System consists of KEIM Concretal-Lasur, KEIM Concretal-Base and KEIM Concretal-Fixativ.
All three system components can be mixed with each other in any desired ratio. This is a maximum of flexibility
and enables a natural and visual colour matching of the concrete surface.
REPRESENTATION OF DIFFERENT DILUTION LEVELS
From opaque (left) to very transparent (right)

opaque(undiluted)

1:2

1:4

1:6

1:8

Untreated concrete

1:10

1:12

1:14

KEIM SIlIKatFarbEn –bauphySIKalISch IdEal
keim concretal® – the beaut y of concrete!

17

DEFINITELY DRY
WITH
Für trocKene Fassaden®
die idee, eine Fassade
mit einer kunststoffbeschichtung
KEIM CONCRETAL-W
gegen Feuchtigkeit zu versiegeln, erscheint zunächst

erKömmlicHe
isPersionsFarben

einleuchtend. doch praktisch funktioniert das nicht wie
gedacht. Spätestens wenn die Farbe etwas gealtert ist,drängt insbesondere bei Windlasten Wasser in die Fassade ein. durch die kunststoffschicht kommt sie dann
nur noch sehr langsam wieder heraus. irgendwann blättert die Farbe ab oder es bilden sich Wassertaschen.

erKömmlicHe disPersionsFarben
eHindern das austrocKnen.

uchtigkeit im Mauererk kann durch diechte dispersionsfarbe
cht ausdiffundieren.
entsteht Staunässe,e zu Schäden führt.

eim soldalit ®

Farbe

Mauer

OPTIMAL WATER PROTECTION
KEIM offers a complete range of concrete protecting
paints. Depending on the concrete quality and external
influences they comply with demands on aesthetics,
protection and safety. KEIM Concretal-W with a
low water vapour resistance and water absorption
coefficient protects concrete optimally from weathering
influences and penetrating water which prevents the
corrosion of the concrete steel. A filled variant, KEIM
Concretal-W-Grob, is used as priming coat on difficult
and repaired concrete surfaces: It closes hairline
cracks and levels texture irregularities.

CONCRETAL -W ALLOWS THE
eim soldalit® lässtKEIM
FeucHtigKeit®

MOISTURE TO ESCAPE
ngeHindert ausdiFFundieren.

uchtigkeit im Mauererk kann ungehindert
ch außen diffundieren.
as Mauerwerk bleibt
ocken, die Farbe hält.

paint
Farbe

wall
Mauer

moisture in masonry candiffuse unhindered. themasonry remains dry andthe paint is not affected.

KEIM CONCRETAL®-W KEY FEATURES– Extremely low sd-value < 0.01 m– Elevated protection from weathering by surface
consolidation– Absolutely light-resistant thanks to pure mineralpigments (highest colour stability class „A1“)– Minimal soiling– Preservation of the original concrete aesthetics
by the mineral matt surface– Easy to renovate– Tested according to DIN 1504-2

MINERAL MATT SURFACE
Pure mineral colour pigments guarantee absolute lightfastness (highest colour stability class „A1“) and ensure
brilliant colours
original concrete
aus bauphysikalischer
Sichtforistyears!
eine Plus,
hohetheWasseraesthetics
remainspreserved.
dampfdiffusionsfähigkeit besonders wichtig. keiM

Mineralfarben sind extrem dampfdurchlässig, weil sie
auf einem silikatischen bindemittel aufgebaut sind. So
kann im baukörper enthaltene Feuchtigkeit ungehindert
und schnell nach außen abgegeben werden. Feuchteansammlungen zwischen anstrich und untergrund
und damit einhergehende Schäden werden vermieden.
die Fassade bleibt besonders gut gegen Frost undWasserschäden geschützt.
keiM Farben trocknen auch schneller ab. So entsteht
kaum taufeuchte auf der Fassade – eine der Hauptursachen für algen- und Pilzbefall.

KEIM CONCRETAL® -BLACK
THE DEEPEST BLACK KNOWN TO CONCRETE!
BLACK – STRONG, TIMELESS, ELEGANT
Black facades are a statement of our time. Setting
individual and powerful accents in five shades ofBlack.
KEIM Concretal-Black opens up new dimensions
in designing concrete. KEIM Concretal-Black isabsolutely light-resistent, UV-stable and highlights
the natural beauty of concrete.

BENEFITS– Intense black– Absolutely UV-stable: Black stays black!
– Mineral matt aesthetic appearance

FIVE CLASSY COLOUR NUANCESFOR DIFFERENT COLOUR EFFECTS:

PURITY

Pure black is pitch-dark, somewhat dramatic and has
a graphic effect that is hard to resist.
KEIM Concretal-Black Purity - the pure power of black!

AURORA

A black night glows with the harmonic red of the rising
sun.
KEIM Concretal-Black Aurora – like the warm mood ofa splendid sunrise.

FOREST
ECLIPSE
Deep black with a touch of mystic green.
Inspired by the fir trees of the mystical Black Forest.
KEIM Concretal-Black Forest – the mysterious black.

PEARL

Elegant black with a deep blue nuance. Inspired by
the dark pearls from the depths of the ocean.
KEIM Concretal-Black Pearl – precious like a SouthSea pearl.

Pure black accentuated by a light yellow tone.
KEIM Concretal-Black Eclipse – unique like the natural
spectacle of a solar eclipse.

Company building at Crolles by Paul&Seguin Architectes, Grenoble
Photo: © Paul&Seguin Architectes

WHAT CAUSES CONCRETE DECAY?
External influences, manufacturing faults
or defects in workmanship, constructive
shortcomings or combinations thereof may
result in serious concrete decay.

FOR ETERNITY
Concrete is used wherever protection and safety arerequested. Foundations, bridges, tunnels or skyscrapers
have to withstand strongest environmental influences.
Even concrete, formerly promoted as being »forever«,is not spared from decay.
CONSTRUCTIVE DEFICIENCIES DURING
THE BUILDING BOOM
The use of concrete has been increased since themiddle of the 20th century. But at that time quality
requirements and technologies were not at today‘slevel. So, you may come across older concretebuildings with ageing phenomena and decay suchas spalling and corrosion. The causes are manifold,entailing a considerable need for renovation.

HAZARDSIn the course of time concrete is attacked byweathering and thus allows water and pollutants
to enter. Moss and algae growth lead to visual shortcomings and increase the damaging effect. A highwater absorption in combination with frost will destroy
the structure of the concrete causing rust on thereinforcement and leads to considerable damages.
OVERVIEW OF HAZARDS– Weather– Water– Shallow depth of cover– De-icing salts– Constructive deficiencies

keim concretal® – the beaut y of concrete!

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PROTECTIVE OPTIONS FOR CONCRETE

Good concrete, very low
carbonation

Carbonation zone is very
close to the reinforcement

WEATHERING PROTECTION
Silicate coatings can protect concrete surfaces longterm from weathering thanks to their strengthening
action (silicification). An extra treatment of the substrate with a hydrophobing agent even increases theweathering protection.

CO2 PROTECTION
The concrete surface must be sealed in such a waythat CO2 cannot penetrate. For a functioning CO2
protection the pores and blowholes have to be always
closed by filling (full-cover filling) before coating. Justa coating alone would be insufficient in this case.

WATER PROTECTION
Water accumulation in the concrete is prevented bya high water-repellency of the outside surface andextreme water vapour permeability from inside to theoutside (rust protection by keeping the concrete dry).
Reinforcement is already locatedin the carbonated area

High chloride load

Large areas of the reinforcement
are close or right at the concretesurface

Carbonated concrete
Non-carbonated concrete

CHLORIDE PROTECTION
Chloride salts are transported into the concrete bywater. Chloride protection also means water protection.
In this way the penetration of chloride-loaded water
is prevented and dry concrete guaranteed. Chlorides
that are already present in the concrete cannot
become active.

ADDITIONAL COVERING
Additional cover with a concrete replacement material
is required for lasting protection. By spray applicationof an extra layer thickness from 1 to 3 cm is the material
strongly compacted in order to avoid carbonation.
A subsequent coating of the surface is performed forvisual reasons and as weathering protection.

Carbonation end
Steel reinforcement

KEIM CONCRETAL®-C FOR
ADDITIONAL CO2 PROTECTION

KEIM Concretal-C – the most colour-stable CO2 concrete protection coating! KEIM Concretal-C, formulated with purely
mineral pigments, excels by its convincing, long-lasting colour stability.

MOST COLOUR-STABLE CONCRETE
PROTECTING PAINT
KEIM Concretal-C is used when an extra CO2
protection is needed for the protection of concretesurfaces. The CO2 tightness of this system plays a
key role for certain application cases. Despite amarginal synthetic content which guarantees theCO2 tightness, KEIM Concretal-C allows beautiful,colour intensive surfaces by adding absolutely
mineral pigments.
CO2 , WATER AND CHLORIDE PROTECTION
The special formulation of selected raw materials
enables a CO2 tightness with fast redrying. The water
absorption coefficient ensures fast drying and protects
in this way the building material from steel corrosion,
frost damages, chloride corrosion as well as from a
progressing carbonation.

STANDARD REQUIREMENTS
KEIM Concretal-C complies with European standard
DIN EN 1504-2 for repair principles 1.3, 2.2, 8.2
and German standard DIN V 18026 for a surface
protection system OS4.
KEIM CONCRETAL-C KEY FEATURES– Long-term colour stability thanks to pure,mineral pigments– Protection from steel corrosion, frost damages
and chloride corrosion– Very fast redrying of the concrete– Protection from progressing carbonation by
a very good CO2 tightness

keim concretal® – the beaut y of concrete!

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keim concretal® – the beaut y of concrete!

KEIM CONCRETAL®
CONCRETE REPAIRTWO SYSTEMS
Two tried and tested systems are available for the
repair of defective places. All products are slightly
modified, cement bound building materials (PCC)that are mixed with water only.
CONCRETE REPAIR ACCORDING
TO HIGHEST STANDARDS
Tested according to all cases of application of the
ZTV-ING* and with a general building authority test
certificate this system can be used for the industrial
as well as for the building construction.
The system comprises the following components:– KEIM Concretal-MKH(corrosion protection and bonding bridge)– KEIM Concretal-Mörtel-R(concrete replacement mortar)– KEIM Concretal-Feinspachtel(fine filler for levelling)

ZTV-ING* TESTED SYSTEM STRUCTURE
COMPLETE REPAIR WITH JUST ONE MATERIAL
Simple, fast and safe concrete repair in definite
terms: Performance with one product only!
The material serves as corrosion protection becauseof its very good adhesion property and makes abonding bridge unnecessary. The high content offine particles provides a stucco-like smoothing of thesurface. Classic application fields include structural
engineering but also constructions made fromlightweight concrete.
KEIM Concretal-Universalmörtel-S. One for all.
(Concretal-Universal Mortar-S)

DIN 1504-3 TESTED SYSTEM STRUCTURE* Additional technical terms of contract and guidelines forcivil engineering works

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EFFICIENT MOISTURE PROTECTION
FOR CONCRETE

SURFACES MUST NOT ONLY MEETAESTHETICAL DEMANDS …
Besides visual demands surfaces must also fulfil
requirements for the inside climate and the associatedcomforts in a home. A crucial contribution comes fromthe outer shell in protecting the inside from the weather.
… BUT ALSO PROVIDE PROTECTION FROMUNCONTROLLED MOISTURE.
Particularly uncontrolled moisture influences fromoutside can seriously interfere the durability andalso the indoor climate of a building. Water-repellent
treatments and impregnations from KEIM provide
a decisive factor that exceeds clearly aestheticaldemands.

keim concretal® – the beaut y of concrete!

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KEIM CONCRETAL®
CONCRETE SYSTEMS – OVERVIEWKEY FEATURES– Low diffusion resistance which means fast redrying
and excellent moisture protection– UV-stable and absolutely light-resistant– Highly weather-resistant– Unequalled durability– Natural, matt concrete appearance– Non-combustible– Easy to renovate

APPLICATIONSWATER-REPELLENCY/CONSOLIDATION

CLEANINGREPAIR

Concrete cleaner
Bio stripper
Algicid-Plus

KEIM Concretal-MKH
KEIM Concretal-Mörtel-R
KEIM Concretal-Feinspachtel
KEIM Concretal-SpezialvergütungKEIM Concretal-Universalmörtel-S

KEIM Silangrund*
KEIM Silan-100
KEIM Concretal-Fixativ

COATING SYSTEMSKEIM Concretal-Lasur
KEIM Concretal-Fixativ (Dilution)
KEIM Concretal-Base (Dilution)
KEIM Concretal-W
KEIM Concretal-C

PROTECTION GRADES
WATER PROTECTION

CO2PROTECTION

KEIM Silangrund*
KEIM Silan-100
KEIM Silan-100 +KEIM Concretal-Lasur
KEIM Concretal-W
KEIM Concretal-C

KEIM Concretal-C*** Only in combination with a subsequent coating** Only in combination with blowhole filling

CHLORIDE
PROTECTION

WEATHERPROTECTION

ADDITIONAL
COVERING

KEIM Silan-100
KEIM Concretal-W
KEIM Concretal-C

KEIM Concretal-Fixativ
KEIM Concretal-Base
KEIM Concretal-Lasur
KEIM Concretal-W
KEIM Concretal-C

KEIM Concretal-Mörtel-R

KEIM. COLOURS FOR EVER.

Version 02/2019

KEIMFARBEN GMBH
Keimstraße 16 / 86420 Diedorf / Tel. +49 (0)821 4802-0/ Fax +49 (0)821 4802-210
Frederik-Ipsen-Straße 6 / 15926 Luckau / Tel. +49 (0)35456 676-0/ Fax +49 (0)35456 676-38
www.keim.com/info@keimfarben.de