SikaPlast®
Powered by ViscoCrete®
Mid Range Water Reducer
Cement Grain
From Mid Range
to High Range Water Reducer
PCE
SikaPlast®
Powered by ViscoCrete®
The innovation and development of superplasticizers based on polycarboxylate ether (PCE) play
a major role in order to enhance both technical
performance of the concrete and the production
process.
With the application of PCE based superplasticizers, like the Sika® ViscoCrete® technology,
it is possible to produce high performance concrete types. SikaPlast® combines the latest
technology innovation and offers therefore an
optimized cost performance for all volume applications in your daily concrete business.
PCE
PCE
PCE
PCE
Cement Grain
Technology
Characteristics and Advantages of Polycarboxylate Ether
Technology (PCE)
The major characteristic of polycarboxylate ether-based superplasticizer
technology is their targeted polymer design to achieve specific concrete
properties.
The crucial factor is the limited space for carboxyl groups and side
chains along the backbone. Either a carboxyl group or side chain can be
attached at a certain location. This leads to the technological limitation
that there are essentially three different types of polymers – water
reducing, slump controlling and slump retention polymers.
Characteristics that can be influenced are:
 Adsorption speed
 Water reduction with high initial liquefaction / workability
 Slump retention without retardation and subsequent fast strength
development
 Early strength development with sufficient workability time
 Stickiness
 Stability / viscosity
Various combinations of these properties can be optimized.
Application
Pump up your Concrete
The application range of SikaPlast® is from ready mix concrete, site
batched concrete to big infrastructure projects or even private houses.
The uniformity of the concrete mix is positively influenced across the
entire dosing spectrum, achieving maximum leverage of product performance with regards to economical mix design.
Special developed new polymer combinations based on the Sika®
ViscoCrete® technology are the key element of the new SikaPlast®
product range. The development of these special polymers makes
SikaPlast® a unique admixture for your high efficient concrete.
Benefits of SikaPlast®
SikaPlast®
Efficency
SikaPlast® is much more efficient at lower dosages compared to
traditional Polycarboxylates.
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Sensitivity
SikaPlast® is more robust against variations in aggregates and
different cement-types.
The polymers consist of backbones with carboxyl groups and side
chains.
Flexible applications
SikaPlast® is suitable for a wide range of application.
The first component – backbone with carboxyl groups – is responsible
for the attainable water reduction / initial slump and mixing time respectively. The second one – side chains – determines the slump keeping
capability of the superplasticizer, affected by an increasing number of
side chains.
Ecology
SikaPlast® supports your efforts to change your mixes into a
concrete with less impact on the environment.
Standard Concrete
High Efficiency Concrete
High Performance Concrete
SikaPlast® on Vertical Slip Form Concrete La Confluencia Project in Chile
Project reference
La Confluencia Project is located 40 kilometers from San Fernando
(Chile). This mega structure for the construction of a shaft 360
meters long stands out in the middle of the rock. An impressive
concrete shaft has replaced the steel outer discharge pipe that
drains toward the power turbines. Sika has scaled the mountain
to solve this important challenge. The pressure tunnel is enclosed
in part by a concrete lining and by a liner of steel to protect against
water pressures. The task of building the concrete lining was critical
because we had to work on several fronts simultaneously. Concrete
was laid with a systems slip form, installing the concrete lining and
then the steel liner in the tunnel, which was placed in sections of 3
m and then welded.
Requirements
The customer was looking for a concrete with
high cohesiveness and a good early strength.
Furthermore a low water cement ratio was
required for this challenging project.
Sika Solution
Sika Services AG
Business Unit Concrete
Tüffenwies 16
CH-8048 Zürich
Switzerland
Phone +41 58 436 40 40
Fax +41 58 436 47 29
www.sika.com
Our most current General Sales Conditions shall apply.
Please consult the Product Data Sheet prior to any use and processing.
© Sika Services AG / BU Concrete / SikaPlast / CMS / gho / 04.2010
SikaPlast® was used in the concrete mix for
a slip form of vertical method for the construction of the pressure relief chimney at the
La Confluencia Hydropower Project.
With SikaPlast® the contractor fulfilled the
specification and achieved good operational
performance. Using a single admixture in the
concrete was another advantage, because
SikaPlast® combines benefits and effects
of significant water reduction with good
workability behaviours and requiered early
strength development.