Product description
EM 878 Dry Screed is a multiple use Cementitious Construction Material.
Usage
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For creating a fall in floors, shower bases or any area where water must drain away.
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For construction of haunching, fillets and any unreinforced high build construction applications
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For use in environments where a rapid setting product is required
Consult with EzyMix staff prior to use for additional information and expertise.
Surface Preparation
Concrete floors must be solid, clean, and free of wax, grease, asphalt, latex compounds, curing and sealing compounds and any other surface contaminants.
Where required mechanically clean the floor using recommended preparation methods such as shot-blasting, scarifying, diamond grinding, shaving or other suitable methods to provide a roughened, clean, sound, solid and open porous surface.
Priming
Prior to priming all concrete surfaces must have dust removed from the surface.
All concrete surfaces must be primed following the below instructions.
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EM 4716 Primer is to be mixed with water at a ratio of 3:1 (3-parts water to 1-part EM 4716) Refer to EM 4716 data sheet.
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Using a drill with stirrer mix the EM 4716 Primer Solution with EM 878 Dry Screed to make a primer coat at a ratio of 3:1(3-parts EM 878 to 1-part EM 4716 Primer Solution), make a paste like consistency.
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Pour the Primer onto the concrete surface, then with a broom evenly spread ensuring there are no areas unprimed.
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EM 878 Dry Screed must be applied overtop while the Primer is “tacky”, any primed areas that dry must be re-primed
Mixing Ratio
As a guide, for general use, EM 878 Dry Screed requires approx. 9% water added or as required to achieve the required workable consistency.
1 x 25kg bag requires 2.25 liters of water +/- 10% to achieve desired consistency.
Note:
Water added must be clean potable water.
Water temperature may alter the workable time for this product.
Thickness
EM 878 Dry Screed can be applied from 5mm-100mm in one application.
Coverage
Approximately 16kg/m2 per cm of thickness
Drying Time
EM 878 Dry Screed can take foot traffic after 24hrs.
Residual moisture content ? 2% in EM 878 Dry Screed before moisture barriers can be applied, this is typically 24hrs after installation at an average temperature of 23ºC. Do not add more than the above recommended water content as this will prolong the moisture cure process.
Storage
Shelf life is at least 12 months when stored in original, unopened bags.
Availability
In 25 kg bags, 40 bags per pallet.
Technical specifications
Coverage rates
1.6 Kg/mm/m2
Application temperature
+ 5 °C to + 30 °C
Surface temperature
+10°C
Outdoor application
Yes
Indoor application
Yes
Working time
1 hours
Walkability
24 hours
Mixing Ratio
25 kg bag + 2.25 liters water
24 hr. MPa
18 MPa ?
28 Day MPa
36 MPa ?
