basf rheomatrix en
TRANSCRIPT
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RheoMATRIXfor Smart Dynamic Constructionin Ready-Mix
Adding Value to Concrete
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In todays fast-moving and competitive environment, the need for
process economies is a major concern for the construction industry
to save time and money. More fluid concretes allow for such savings.
This is one of the main reasons why the market demands more and
more these concretes. The ready-mix statistics of recent years prove
this significant trend towards concretes with higher fluidity:
Combined with growing pressure towards more sustainability,
the ready-mix industry is facing the following challenges:
A demand for robust and more fluid concretes for day-to-day
applications
Higher durability specifications which require a perfect covering
of reinforcement to extend the service life of structures
Energy efficiency to reduce CO2 emissions
To meet all these challenges perfectly and simultaneously would
require a concrete to fulfill contradicting requirements: cost effective-
ness, self-compaction and robustness. This dilemma can now be
solved with the revolutionary Smart Dynamic ConcreteTM concept
developed by BASF Construction Chemicals a concept for a new
generation of highly fluid concretes.
Industry challenges
Smart Dynamic Construction
A New Generation of Highly Fluid Concretes
Source: ERMCO 2005, 2006
50%
43%
35%
27%
35%
40%
45%
30%
25%
20%
2004 2005 2006 Year
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The Smart Dynamic Construction concept consists of a robust
mix design with less than 380 kg of fines, a tailor-made Glenium
superplasticizer and the new and unique RheoMATRIX, a BASF
exclusive, state-of-the-art Viscosity Modifying Agent (VMA) as the
key element of this revolutionary concept. Due to the smart and
self-organizing molecules of RheoMATRIX, concrete mix designs
can now be optimized to a unique extent to achieve unmatched
performance levels. In fact, it creates a new concrete generation
which combines the benefits of traditionally vibrated concrete
with those of self-compacting concrete and is easy to produce
and robust in every day use: Smart Dynamic Concrete.
The Smart Dynamic Construction concept is suitable to
upgrade S4 and S5 concretes to a higher performance
level with self-compacting characteristics and is as easy
to produce as standard concrete.
It allows the ready-mix industry to reach better construction pro-
cess economy, higher concrete durability and increased energy
efficiency in order to save time and money and reduce CO2
emissions. It is not recommended as a substitute for typical
SCC applications.
RheoMATRIX is the essential component of the Smart
Dynamic Construction concept. It consists of a water-
soluble polymer which modifies the rheological properties
of the concrete mix. Thanks to its tailored mode of action,
RheoMATRIX brings a level of viscosity to the mix that
allows the right balance between fluidity, passing ability
and resistance to segregation apparently opposing
properties to be achieved.
Concept
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The rheology of matter is mainly characterized by two
parameters: yield value and plastic viscosity. In the
Smart Dynamic Construction concept these two para-
meters are controlled by an optimized concrete mix
design but yield value is specially controlled by Glenium
superplasticizers and plastic viscosity by RheoMATRIX.
Standard VMA: VMAs stabilize unstable concrete
increasing yield value, with much lower increase of plastic
viscosity. However, after the addition of 10 l/m3 water,
the mix is back in the unstable area
RheoMATRIX: After addition of 10 l/m3 water,
the mix is still in the stable area
Mechanism of Action
Yield
point0
Plastic viscositypl
+10 l/m3
of water
Stability area
Instability area
Referenz
Plastic viscosity
Yield
point0
pl
Stability area
Instability area
Referenz
+10 l/m3of water
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The unique mix-design optimization now possible
allows the substitution of concrete paste quantity by
concrete paste quality to achieve self-compacting
properties and concrete stability at the same time.
RheoMATRIX is based on BASF proprietary, intelligent
(smart) high molecular weight ionic polymers which interact
among themselves and mainly with water molecules,
generating a water envelope, therefore building up a highly
structured cement paste.
An additional mechanism of action that strengthens the
effectiveness of the system is the simultaneous adsorption
of RheoMATRIX molecules on more than one fine particle
of the cement or fine sand, leading to a bridging phenom-
enon which generates an even more powerful molecular
network.
The effective control of the rheological parameters allows
the achievement of a superior homogeneity of the mix, a
minimum energy dissipation and a minimization of paste
volume and thus of the fine particles content in the mix
design.
Smart RheoMATRIX polymers
which self-organize to a
matrix-like structure
Polymer
Water molecules
Water envelope
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Benefits
This innovative concept meets the existing and conti-
nuously increasing demand for more fluid concretes
and offers the following benefits to the industry:
1. Economical:
Thanks to a unique mechanism of action in concrete,
savings of fines (
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Economical
Savings on fines
Up to 40%
faster placing
Up to 5 times
higher labour productivity
Easy to produce
Ecological
Less fines, less CO2
Higher durability
Ergonomic
No vibration
No noise
Low stickiness
One operator becomes significantly faster than 3operators.
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Technology
Robust mix design
Tailor-made
superplasticizer
Exclusive VMA
Concrete
Fines < 380 kg
60-70cm slump flow
Self-compacting
Benefits in the field of
Economics
Ecology
Ergonomics
At a Glance
Smart Dynamic Construction: A smart technology for a
dynamic concrete to achieve construction benefits.
Smart Dynamic Construction
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Smart Dynamic Construction is designed to upgra-
de S4/S5 concrete to become self-compacting and
robust for day-to-day use at minimum extra cost.
The centerpiece of this concept is RheoMATRIX, a
high performance VMA which allows for a quantum
leap in concrete robustness.
Smart Dynamic Construction combines the advan-
tages of both traditionally vibrated concrete and
self-compacting concrete.
This concept makes unique mix-design optimiza-
tion (by reducing fines) possible.
Smart Dynamic Construction adds economical,
ecological and ergonomic values to concrete and
has the potential to move the market up to the next
level of advanced construction practice.
Conclusions
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Innovative Products
Comprehensive range of admixtures
specially engineered for the needs of
ready-mix producers, precast operators,
contractors and manufactured concrete
products producers
Single Source
Complete range of latest technology
admixtures for concrete and mortar as
well as auxiliary products such as form
release agents, curing compounds and
surface retarders
Superior Logistics
Easy communication and proficient
means of transportation ensured by
local organization
Knowledge and Experience
Superior expertise in concrete and mortar
technology, its application and design with
full local coverage
Value-Added Service
Specification development, mix design
and production process optimization
support and quality control
Expert Training
Specific programmes for producers and
contractors
Deliverables of the Global LeaderAs part of the world's largest chemical company,
BASF Construction Chemicals is the market leader
in the admixtures business. We are committed to
engineering quality solutions to drive the concrete
industry forward. Through constant research and
development into new products, systems, application
methods and equipment, we add value to concrete.
Our market-segment oriented structure means that
you can rely on the proximity of a regional company
with the backing of a global group.
Adding Value to Concrete
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Admixture Systems Europe
BASF Construction Chemicals
Europe AG
Vulkanstrasse 110
8048 Zurich, Switzerland
Phone +41 58 958 22 10
Fax +41 58 958 32 20
www.basf.com1.
1.
2008-V1
CH
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