Product Data Sheet Show all documents

SikaScreed® Rapid-75

Fast Setting Cementitious floor leveling Mortar

SikaScreed® Rapid-75 is a polymer modified, rapid setting, load bearing and over-coatable, horizontal levelling mortar that is designed for application in a minimum layer thickness of 12 mm. It is shrinkage compensated, plus it has high abrasion resistance and compressive strength.

  • Pre-bagged for quality
  • Just add water
  • High early strength
  • Rapid setting
  • Contains no chloride admixtures
  • Non corrosive to steel
  • Can be overcoated
Product Data Sheet Show all documents

Usage

SikaScreed® Rapid-75 is a floor screed to form ramps, level or raise concrete floors at a thickness between 12–75mm in one working step.
SikaScreed® Rapid-75 is useable as screed for industrial service conditions on it's own but especially when sealed with a PU or EP resin top coat from medium to high load (heavy-traffic + forklift pallet truck with impact load).
SikaScreed® Rapid-75 is useable as screed for exterior and interior areas.
   

Advantages

  • Pre-bagged for quality
  • Just add water
  • High early strength
  • Rapid setting
  • Contains no chloride admixtures
  • Non corrosive to steel
  • Can be overcoated

Packaging

25kg bags

Colour

Powder, grey

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • Cement based screed CT-C70-F6-A1 according to EN 13813, declaration of performance 16232814, and provided with CE marking
Product Information

Chemical Base

Portland cement, selected aggregates and additives.

Shelf Life

6 months from date of production

Storage Conditions

Store properly in original unopened, sealed and undamaged packaging in dry and cool conditions.

Density

Bulk density

1.55 kg/litre

Fresh mortar density

2250 kg/m3

Maximum Grain Size

Dmax: 4.0 mm

 
System information

System Structure

Priming

SikaScreed®-20 EBB

Screed

Apply SikaScreed® Rapid-75 to the required thickness 12-75 mm

Coating

All kinds Sikafloor® EP, PMMA and PU coatings
Technical Information

Abrasion Resistance

AR 1

(EN 13892-4)

Compressive Strength

~35 N/mm²1 day / +20°C
~55 N/mm²7 day / +20°C
~70 N/mm²28 day / +20°C

Flexural Strength

~4.5 N/mm²1 day / +20°C
~6.0 N/mm²7 day / +20°C
~6.0 N/mm²28 day / +20°C

Application

Application Information

Mixing Ratio

2.5 to 2.9 Litres of water for 25 kg powder

Layer Thickness

Minimum

12 mm per operation

Maximum

75 mm per operation

Ambient Air Temperature

minimum +5°C / maximum +30°C

Substrate Temperature

minimum +5°C / maximum +30°C

Pot Life

60 minutes at +20°C

Lower or higher ambient and substrate temperatures retard or accelerate the above times significantly.
Consumption

Consumption

~ 2.25 kg/m2/mm
Application steps

MIXING

SikaScreed® Rapid-75 levelling mortar: 2.5 - 2.9 litres of water per 25 kg bag.
In a suitable container, mix the SikaScreed® Rapid-75 and water in the specified ratio with an electric mixer (maximum 500 rpm.) until it is smooth and homogeneous.
It is important to mix for minimum 3 minutes.

APPLICATION

BONDED SCREED
Bonding bridge
SikaScreed®-20 EBB: To the prepared dry or matt damp substrate without any standing water. Apply SikaScreed® Rapid-75 ‘wet on wet’ within 30 minutes of mixing (+20°C). Also refer to SikaScreed®-20 EBB Product Data Sheet.
Note: If the SikaScreed®-20 EBB bonding bridge has dried, it must be removed mechanically and replaced before application of SikaScreed® Rapid-75.

Mix the SikaScreed® Rapid-75 in a paddle mixer and apply on the correctly prepared substrate and screed off to level with battens. To obtain optimum surface strength, finish the SikaScreed® Rapid-75 with suitable trowels or floats. Do not use heavy troweling machines (like sit up power floating machines).
Spraying of water onto the surface as treatment is strongly prohibited and lead to less surface strength.
Don´t forget curing! Curing must start immediately after the last finishing operation, using polyethylene
sheet.
In drafty areas, open spaces, and in a very dry climate, the freshly applied mortar immediately has to be covered with a polyethylene sheet (before finishing).
Don´t apply SikaScreed® Rapid-75 in a summery climate direct in the sunlight.

When expected temperatures are above +25°C, the start application must be after reaching the daily maximum temperature.
The substrate, the dry mortar (bags) and the water must be kept cool.

CLEANING OF TOOLS

Clean all tools and application equipment with water immediately after use.
Hardened/cured material can only be mechanically removed.

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