construction chemicals

MegaSıva İ
Cement Based, Manually Applied Fine Plaster
PRODUCT DESCRIPTION
Cement based, manually applied surface preparation plaster with enhanced adherence.
AREAS OF USE
MegaSıva İ is applied on the walls and ceilings of in indoors and outdoors spaces, on prime
coated gas concrete and prime coated concrete walls and ceilings and on any roughcast
(MegaSıva K, MegaSıva Makine İç, MegaSıva Makine Dıº, MegaSıva Elyaflı K) applied
surfaces.
PRODUCT ADVANTAGES
• Ensuring high bonding to the surface, the product does not cause spalling and poses high
bonding strength.
• Being a high performance product, it does not cause contractions.
• Applied easily and rapidly.
PERFORMANCE
Dry bulk density 1.55 ± 0.1 gr/cm 3 TS EN 1015 - 10
Compressive strength CS III TS EN 1015 - 11
Bonding strength > 0.2 N/mm 2 TS EN 1015 - 12
Capillary water absorption
coefficient
W 0 TS EN 1015 - 18
Water vapor permeability µ < 15 TS EN 1015 - 19
Air content % 6 ± 0.5 TS EN 1015 - 7
Workability time
> 3 hours (at 20 ± 5 O C
temperature and minimum 95 % TS EN 1015 - 9
relative humidity)
Reaction to fire A1 TS EN 13501 - 1
The foregoing values represent the results of the laboratory tests conducted at 23 ± 2°C
temperature and 50% ± 5 relative humidity conditions. The values provided as per the table
may vary depending on the surface and ambient conditions.
REFERENCE STANDARDS
Certifications/Standards
TS EN 998 - 1 (GP)
Ministry of Public Works and Settlement Item No.
Ministry of Public Works and Settlement Item No.: 04.476/C
QUALITY CERTIFICATES
Conformant to TS EN 998 - 1.
CE
APPLICATION PROCEDURE
Application Surfaces
Indoors and Outdoors Walls;
- Gas concrete (MegaFilm primer applied)
- Exposed concrete (MegaFilm or MegaFilm BB primer applied)
Ceilings;
- Roughcast applied surfaces
Surface Preparation
• The application surface should be dry, clean, sound and dust free, and should have been
cleansed of oil, dirt or any materials that may prevent adhesion, and any such materials as
mortar and cement residues should be scraped from the application surface.
• The surface defects, which are deeper than 1 cm, should be repaired with MegaTamir İ or
MegaTamir K 24 hours in advance. In the cases, where structural repair mortar should be
used; MegaTamir İ Yapısal or MegaTamir K Yapısal should be preferred.
• The application surfaces should be moisturized with water, where necessary.
• Upon the completion of the surface cleaning, MegaFilm primer should be applied in a
single coat with a brush and be left to dry for 1 to 2 hours in order to enhance the bonding
strength and stabilize the surface absorption.
• Gas concrete surfaces should, prior to the application of the product, be applied MegaFilm
primer and the water absorption of the surfaces should so be reduced.
• Exposed concrete surfaces should be applied MegaFilm BB exposed concrete primer in
single coat and be left to dry for minimum 3 hours prior to the application of the adhesive
mortar in order to enhance the adhesion strength.
Application Methods
• The product should be applied with a steel trowel in equal thickness on all surfaces to be
repaired.
• The application thickness should ranger between 2 mm and 7 mm.
• The surface should be smoothed with a smoothing trowel and be so prepared for paint
application or application of another coating material.
Application Recommendations
• The surface should be moisturized intermittently for a period 7 days following the
application in order to enhance the endurance of the plaster.
• Plaster profiles should be employed on the corners in order to ensure a better quality result
and high level of efficiency.
• The product should not be applied to gypsum surfaces.
• MegaLatex may be employed in order to enhance the performance of the product.
• The product should, once mixed, be used before the expiration of its pot life. Any product,
the pot life of which has expired, should not be used during the application.
• Any such foreign substance as lime, cement or plaster should not be added to the mortar
prepared.
• Any extra water should not be added to the mixture.
• The product should not be applied on unsound surfaces. The soundness and the load
bearing capacity of old surfaces should be checked prior to adhesion.
• The surface should be preserved from air currents and water contact during and after the
application.
• The product should not be applied to such surfaces, which are exposed to risk of freezing
within the next 24 hours, which are frozen or the frost of which is thawing.
• Due care should be taken to ensure that the material is not exposed to direct sunlight in hot
weather conditions, and the product should be mixed with cold water.
• The product should not be applied on extremely windy weather conditions or on hot
surfaces, which are exposed to direct sunlight; and in the cases, where application is
imperative under such conditions, the environment and the surface should be prepared for
application in advance.
• The product should not be applied in rainy weather conditions, and the application surface
should be preserved from rain for a period of 24 hours.
• Refer to our technical support hotline for recommendation on different surface applications.
(PHONE: 444 4 595)
Surface and Ambient Temperature
The surface and ambient temperature should be between +5°C and +30°C whilst at
application.
Application Limits
Useful time for prepared mortar - Pot life
Plaster surface smoothing time
Through dry time
The foregoing values represent the results of the laboratory tests conducted at 23 ± 2°C
temperature and 50% ± 5 relative humidity conditions. The values provided as per the table
may vary depending on the surface and ambient conditions.
APPLICATION INSTRUCTIONS
Mixing Ratio
The product should be mixed with water, weighing equal to 23 - 25 % of the product. (5.75
- 6.25 liters of water for a 25 kg package)
Mixing Equipment
• Low speed electrical mixer (400 cycles/min.)
• Special tip stirring equipment
Mixing Period
The product should be stirred with a low-speed mixer until any dry dust and globs are
eliminated. The mortar should, then, be stirred once again for 1 to 2 minutes after being had
settled for 3 to 4 minutes following preparation.
Application Equipment
• Steel trowel
• Smoothing trowel
Equipment Cleaning
The equipment used should be cleaned with water following the application before the
mortar dries.
TECHNICAL PROPERTIES
Chemical Structure: Cement based fine plaster mortar
Dry Density: 1.55 ± 0.1 gr/cm 3
Mortar Density: 1.75 ± 0.1 gr/cm 3
Grain Size: ≤ 600 µm
Coat Thickness: 2 - 7 mm
Color: Gray, white
Maximum 1 hour
Minimum 30 minutes
Minimum 2 days
CONSUMPTION
Recommended consumption amounts for application in roughly 1 mm thickness on 1 m 2
surface;
- Prime coated concrete surface: 2.5 - 3.0 kg
- Plastered surface: 3.25 - 3.75 kg
The said values may vary, depending on the surface and ambient conditions.
104