Product Data Sheet
Edition 08/12/2014
Identification no:
02 14 01 01 100 0 000156
Sigunit L-5601 AF
(Template for local translation, only for internal use)
Sigunit L-5601 AF
Construction
Shotcrete admixture
Product
Description
Sigunit L-5601 AF is a high-performance liquid, alkali-free, setting and hardening
accelerator for shotcrete.
Uses
Sigunit L-5601 AF is suitable for both dry and wet spraying processes and it is used
for:
Support at the face whilst advancing tunnels and mines
Rock- and slope stabilization
High quality lining shotcrete
Characteristics /
Advantages
Sigunit L-5601 AF liquid shotcrete set accelerator has the following characteristics
and advantages:
High early strength development
Alkali-free
Minimal strength loss of the accelerated concrete
No pollution of groundwater by leached out alkalis
Distinct reduction of rebound
Improves bond of shotcrete to rock and concrete thus facilitating overhead
spraying
Distinct reduction of dust
Chloride-free, does not negatively affect the reinforcement steel
Product Data
Form
Appearance / Colour
Whitely suspension
Packaging
Bulk supply
Plastic containers (1000 kg)
Sigunit L-5601 AF must not be stored in standard steel containers.
Storage
Storage Conditions /
Shelf Life
3 months from date of production if stored in original, undamaged and sealed
containers, protected from direct sunlight and frost and kept at temperatures
between +5C and +30C.
In case of separation of Sigunit L-5601 AF the suspension has to be homogenised
before using.
After prolonged storage the performance of Sigunit L-5601 AF should be tested.
Containers have to be cleaned before refilling. Containers must always be stored
firmly closed.
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Technical Data
Chemical Base
Inorganic aluminium complexes
Density
~ 1.44 kg/l
pH Value
~31
Conventional Dry
Material Content
~ 50%
Viscosity
400 mPa s at +20C
Total Chloride Ion
Content % w/w
0.1%
Equivalent Sodium Oxide 1.0%
as % Na2O
System
Information
System Structure
Aggregate grading for pumped concrete:
Usual mix with 8 mm max. aggregate size.
The suitability of the proposed mix design must be tested in field trials before
commencement of the project.
Concrete consistency (dependent on spraying equipment used):
Flow table spread size 45 cm; w/c ratio 0.48
The use of an appropriate superplasticiser (such as Sika ViscoCrete SC) is
essential.
Temperature of fresh concrete: > +15C
Application Details
Dosage
The correct dosage must be determined by preliminary testing. For layer
thicknesses of up to 10 cm applied in one pass, the recommended accelerator
dosage is between 6% and 9% by weight of binder.
Dosage of Sigunit L-5601 AF is achieved by peristaltic pump such as the Sika
Aliva-403 pump. An optimal mixing with the concrete mix is essential.
The following Sika products are generally used for the basic shotcrete mix:
-
Sika ViscoCrete SC
SikaTard-930
SikaPump
SikaFume
SikaFiber
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Application
Instructions
Notes on Application /
Limitations
If thicker layers of shotcrete are to be applied, ensure that the temperature of the
basic concrete is not lower than +15C. Lower temperatures require higher dosage
of accelerator.
The substrate must be clean, free of loose stones and free of water under
hydrostatic pressure.
Construction
The accelerators effect depends on the content, age and type of cement, as well as
on the shotcrete temperature. Furthermore, the shotcrete quality is widely affected
by the substrate, the applied layer thickness, the spraying process, the quality of
equipment and by the application technique. The w/c ratio of the basic concrete mix
in the wet spraying process, and the quantity of gauging water in the dry spraying
process are also parameters influencing the acceleration effect of Sigunit L-5601
AF.
When using sulphate resistant cements strength development can be slower.
Sigunit L-5601 AF is not compatible with alkaline shotcrete accelerators. Before
using Sigunit L-5601 AF the accelerator hoses must be cleaned thoroughly. The
use of Sigunit L-5601 AF requires technically correct dosing and conveying /
spraying technology. Metal parts of the pump that come into direct contact with
Sigunit L-5601 AF must be made of stainless steel.
Contact your local Sika company for any additional technical support required.
Value Base
All technical data stated in this Product Data Sheet are based on laboratory tests.
Actual measured data may vary due to circumstances beyond our control.
Local Restrictions
Please note that as a result of specific local regulations the performance of this
product may vary from country to country. Please consult the local Product Data
Sheet for the exact description of the application fields.
Health and Safety
Information
For information and advice on the safe handling, storage and disposal of chemical
products, users shall refer to the most recent Material Safety Data Sheet containing
physical, ecological, toxicological and other safety-related data.
Legal Notes
The information, and, in particular, the recommendations relating to the application
and end-use of Sika products, are given in good faith based on Sika's current
knowledge and experience of the products when properly stored, handled and
applied under normal conditions in accordance with Sikas recommendations. In
practice, the differences in materials, substrates and actual site conditions are such
that no warranty in respect of merchantability or of fitness for a particular purpose,
nor any liability arising out of any legal relationship whatsoever, can be inferred
either from this information, or from any written recommendations, or from any other
advice offered. The user of the product must test the products suitability for the
intended application and purpose. Sika reserves the right to change the properties
of its products. The proprietary rights of third parties must be observed. All orders
are accepted subject to our current terms of sale and delivery. Users must always
refer to the most recent issue of the local Product Data Sheet for the product
concerned, copies of which will be supplied on request.
It may be necessary to adapt the above disclaimer to specific local laws and
regulations. Any changes to this disclaimer may only be implemented with
permission of Sika Corporate Legal in Baar.
Sika Services AG
Tffenwies 16
CH-8048 Zurich
Switzerland
Phone
+41 58 436 40 40
Telefax +41 58 436 46 86
wwww.sika.com
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