Article No. 281425
Fast-setting special cement for screeds with early readiness for covering
Product specifications
The stated values represent typical product characteristics and are not to be construed as binding product specifications.
Field of application
- Screeds with early ability to be covered, in interior and exterior areas
- Screeds on separation layers
- Heated screeds
Properties
- Foot traffic after 3 hours
- Very fast setting, can be covered with tiles after just a few hours
- Rapid water binding
- Resistant to water, frost and weathering
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Preparation
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Substrate requirements
Clean, dust-free and capable of supporting a load.
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Preparations
To create a bonded screed, clean the substrate and remove any layers that are not capable of supporting a load (e.g. by steel shot blasting, milling, brushing).
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Application
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Machine working
Add 2% of ZM VS - approx. 0.5 l per sack - to the mixing water.
Bonding layer for bonded screeds
Mixing liquid comprising ZM HF [basic] + water in a ratio of 1:2.
Mix 1 part screed fast-acting cement + 1 part quartz sand 0.2 - 2.0 mm.
Add the mixing liquid until a homogeneous slurry is obtained.
Applying the bonding layer
Brush the entire surface area of the bonding layer to min. 1 mm.
Apply the screed wet-on-wet.
Applying the fast-acting screed
Immediately apply the prepared mixture to the substrate and quickly spread, compact and rub to achieve the required layer thickness.
Divide up large surfaces using construction joints.
False joints and movement joints should be provided and used in the same manner as for conventional cement screeds.
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Application instructions
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Once it has hardened, mortar must not be made workable again by adding either water or more wet mortar.
Protect the screed against rapid dehydration (wind and sun).
Check the residual moisture level before fitting moisture-sensitive coverings.
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Working tools / cleaning
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Clean tools with water while the material is still fresh.
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Storage / shelf life
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If stored in an unopened container and in a dry place, the product will keep for approx. 12 months.
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General information
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Low chromate content in accordance with Directive 2003/53/EC.
The characteristic data of the product were calculated under laboratory conditions at 20°C and 65% relative humidity.
The mixing water must be of drinking water quality.
Current regulations and legal requirements must be taken into account and deviations from these must be agreed separately.
The relevant test certificates must be observed when planning and carrying out work.
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Disposal instructions
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Larger quantities of leftover product should be disposed of in the original containers in accordance with the applicable regulations. Completely empty, clean containers should be recycled. Do not dispose of together with household waste. Do not allow to enter the sewage system. Do not empty into drains.
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Safety / regulations
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For further information on the safety aspects of transporting, storing and handling the product and on disposal and environmental matters, please see the current Safety Data Sheet.
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