Colored Concrete - SCHOMBURG International

Colored Concrete
Powder pigments / Pigment slurries
Powder pigments
and slurries
Performance requirements
of pigments used to color
concrete
Pigments used to color concrete must
meet a spectrum of requirements such
as being able to withstand attack from
UV-Light, weathering and a harsh
alkaline environment. By doing so
the colored concrete stone will
maintain its brilliance.
Our line of REMICOLOR® slurries and
REMIFEROX® powder pigments are
produced using only the highest
quality inorganic pigments.
Glaeserne Manufaktur, Dresden
DWS Investments, Frankfurt
Influencing Factors – what affects
pigmentation of concrete?
The cements natural colors
The water/cement ratio
The storage factors
The spectrum of cement color ranges
from extremely light white cements to
very dark gray cements, and there is
a wide range in between the two
ends. As expected, the lighter cements
or white cements are better able to
accept color than darker ones. Using
a white cement will produce a much
deeper and more vibrant color,
especially when pigmenting with
lighter colors such as green, yellow
or blue. Selection of the cements
base color is much less critical when
working with darker shades such as
blacks, browns or reds.
The amount of free water not needed
for the cement hydration process
determines the rate of evaporation
in the cured concrete. The size and
amount of resulting pores and cavities
in the concrete influences the way
light reflects off of the surface,
therefore impacting the appearance
of the color. Rule of thumb: The higher
the w/c ratio of the concrete is, the
lighter the color of the concrete will
be.
The temperature of young concrete
during its hydration has a direct effect
on the reaction which is taking place
within the cement stone. For example,
cement crystals are much smaller
when stored in a cooling chamber
with warm air induction, as opposed
to those stored outdoors in lower
temperatures. The size of the crystals
affects the concrete struture and how it
absorbes light, which in turn impacts
the appearance of the color on the
surface. Efflorescense is a natural
pheonomenon in concrete and often
takes place during the early stages of
hydration. It can be seen as white
deposits of calcium carbonate which
build up on the surface of the concrete.
This will not negatively impact the
resulting concrete color, it is simply
more noticeable than on white or gray
concrete. The white deposits are
usually wheathering away, or can be
easily removed with simple measures.
The dosage rate
Color intensity rises as the amount of
pigment added increases. However,
after a certain level, a saturation is
reached and further addition of
pigment will not change the depth of
the color. Our REMIFEROX® powder
pigments are typically added at a rate
of 3 – 5%, and the REMICOLOR®
liquid pigments between 5 – 6%
(by weight of cement).
The amount of cement
Generally color pigments are dosed
as a percentage of the cement
content. When the amount of cement
is increased it also results in an
increase of pigment, which provides
a positive influence on the resulting
color and intensity.
The color of the aggregate
Certification
The aggregate in the concrete is
generally completely encapsulated by
the cement-lime. Aggregates at the
surface of the concrete can be
exposed by mechanical means or
environmental attack. When done
on purpose with surface preparation
techniques – such as acid etching –
the exposed aggregate can create
an interesting contrast.
All pigments and slurries are certified
according to DIN EN 12878.
REMICOLOR®
RB
B
White concrete
Grey concrete
White concrete
Grey concrete
REMICOLOR®
REMICOLOR®
REMICOLOR®
REMICOLOR®
Pigment slurries
R-03
4%6% 4%6%
B-610FN4%6% 4%6%
R-10
4%6% 4%6%
B-32
4%6% 4%6%
R-20
4%6% 4%6%
B-55
4%6% 4%6%
R-30
4%6% 4%6%
B-63
4%6% 4%6%
B-05
4%6% 4%6%
B-86
4%6% 4%6%
GS
S C GR W BL
White concrete
Grey concrete
White concrete
Grey concrete
REMICOLOR®
REMICOLOR®
REMICOLOR®
REMICOLOR®
G-21
4%6% 4%6%
C-95
4%6% 4%6%
G-552 4%6% 4%6%
C-90
4%6% 4%6%
S-50
4%6% 4%6%
GR-35 4%6% 4%6%
S-80
4%6% 4%6%
W-800 4%6% 4%6%
REMIFEROX®
Powder pigments
White concrete
Grey concrete
White concrete
Grey concrete
REMIFEROX®
REMIFEROX®
REMIFEROX®
REMIFEROX®
dark grey cement
9110
3%5% 3%5%
9420
3%5% 3%5%
light grey cement
Please note that grey cements can
vary from light grey to dark grey.
Color changes are frequently
observed when changing cement
types or switching to different
manufacturers.
9120
3%5% 3%5%
9420
3%5% 3%5%
9130
3%5% 3%5%
9610
3%5% 3%5%
9330
3%5% 3%5%
9663
3%5% 3%5%
9380
3%5% 3%5%
Technical Data
Bulk density
White concrete
Grey concrete
Product
Bulk density
kg/dm³
REMICOLOR® R-03
1.90 ± 0.05
REMICOLOR R-10
1.80 ± 0.05
REMICOLOR® R-20
1.80 ± 0.05
REMICOLOR R-30
1.90 ± 0.05
REMICOLOR® B-05
1.78 ± 0.05
REMICOLOR® B-610
1.85 ± 0.05
REMICOLOR B-32
1.81 ± 0.05
REMICOLOR® B-55
1.78 ± 0.05
REMICOLOR B-63
1.81 ± 0.05
REMICOLOR® B-86
1.75 ± 0.05
REMICOLOR G-21
1.50 ± 0.05
REMICOLOR® G-552
1.67 ± 0.05
REMICOLOR S-50
1.45 ± 0.05
REMICOLOR® S-80
1.45 ± 0.05
REMICOLOR® C-95
1.50 ± 0.05
REMICOLOR C-90
1.20 ± 0.05
REMICOLOR® GR-35
1.90 ± 0.05
REMICOLOR W-800
1.60 ± 0.05
REMIFEROX® 9110*
approx. 5.0
REMIFEROX® 9120*
approx. 5.0
REMIFEROX® 9130*
approx. 5.0
REMIFEROX® 9330*
approx. 4.6
REMIFEROX® 9380
approx. 4.6
REMIFEROX 9420*
approx. 4.1
REMIFEROX® 9610
approx. 4.7
REMIFEROX 9663
approx. 4.8
REMIFEROX® 9960*
approx. 4.3
REMIX-GR 9800*
approx. 5.2
®
REMIFEROX
®
REMIFEROX
®
®
®
®
9960
3%5% 3%5%
®
®
9800
3%5% 3%5%
®
®
®
®
* tested according to EN 12878
The SCHOMBURG Group develops,
produces and markets high quality
building product systems for
• Construction waterproofing
• Construction restoration
• Tiles/natural stone installation
• Screed installation
• Civil engineering
• Surface protection
• Concrete technology
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products from its own production plants
are held it high esteem throughout the
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always investing in research and
development of new and current
products. This guarantees high quality
products, which in turn leads to customer
satisfaction.
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Aquafinstrasse 2–8
D -32760 Detmold (Germany)
phone+ 49-52 31- 953 - 00
fax+ 49-52 31- 953 - 108
www.schomburg.com
03/15 TB/ED/JD
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Subject to changes. Consult current technical data sheet for most recent information.
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