Product Data Sheet Show all documents

SikaScreed®-04 L

Economic drying accelerator for cement screeds

SikaScreed®-04 L reduces the water demand of earth-moist to plastic consistency screed mortars with improved processing property with extended working time and much higher strength.

SikaScreed®-04 L causes
  • Better dispersion and wetting of the cement
  • Physical separation of Fines
  • Reduced frictional forces between cement and aggregates
  • Up to 25% lower water demand
  • Long duration of action
This results in cement screeds
  • Strongly reduced processing and compaction effort
  • Lower W/C-value due to strong water reduction (W/C 0.45-0.55)
  • Higher density and thus good thermal conductivity
  • Up to 50% higher strength
  • More solid surfaces
  • Ready for floor covering after 10 to 18 days
Product Data Sheet Show all documents

Usage

SikaScreed®-04 L is particularly suitable for:
  • Heated screeds
  • Cement screeds with very high final strength
  • Shortening the times to ready for covering of building site cement screeds
  • Cement screeds with W/C-values of  0.55-0.45
  • Bonded screeds, on separating layer or insulation
  • Extended working time
 

Advantages

SikaScreed®-04 L causes
  • Better dispersion and wetting of the cement
  • Physical separation of Fines
  • Reduced frictional forces between cement and aggregates
  • Up to 25% lower water demand
  • Long duration of action
This results in cement screeds
  • Strongly reduced processing and compaction effort
  • Lower W/C-value due to strong water reduction (W/C 0.45-0.55)
  • Higher density and thus good thermal conductivity
  • Up to 50% higher strength
  • More solid surfaces
  • Ready for floor covering after 10 to 18 days

Packaging

Canister: 10 kg;  600 kg on a pallet; Canister: 20 kg;  480 kg on a pallet;
IBC of 1’000 kg net

Colour

Dark brown liquid

Product Details

Product Information

Composition

Polycarboxylate-Lignin mix

Shelf life

12 months from date of production, if stored properly in undamaged, unopened, original sealed packaging.

Storage conditions

Protect from direct sunlight, frost and contamination. After a long storage stir before use.

Density

Approx. 1.13 g/cm³

pH-Value

Approx. 5

 

Application

Application Information

Dispensing

SikaScreed®-04 L is added to the first gauging water (5-10 l) into the mixer. For optimal utilization of the liquefaction potential, we recommend a wet mixing time of 60 seconds before fine water dosage to avoid too soft consistency. The required mixing time after the addition is dependent from the mixer and must be long enough.

Before use, preliminary testing is required to determine the optimal dosage with the existing aggregates and cements. As part of this proficiency tests, the processing and technical characteristics of the screed mortar can be checked. High temperatures accelerate and low temperatures delay drying. During the drying phase adequate air exchange is to ensure.
Please contact our Technical Service Department for more information and assistance.
Consumption

Recommended dosage

0.6-2.0 % from cement weight
approx. 0.40 l each 50 kg cement; ready for covering approx. 18 – 21 days
approx. 0.70 l each 50 kg cement; ready for covering approx. 10 – 14 days
approx. 1.00 l each 50 kg cement; ready for covering approx. 7 – 10 days
Formulation example CT-C25-F4 unheated, ready for covering after 2 weeks:
50 kg cement (CEM II A-LL 32,5 R)
300 kg Screed sand  A/B 0-8 mm
approx. 10-13 l water (Take into account inherent moisture of the sand)
approx. 0.70 l SikaScreed® -04 L
The information refers to a 200 l screed mixing vessel and based on laboratory tests and experience. In unfavourable composed aggregates and deviating cements there may be difference strengths. After completion of the filling and closing of the mixing vessel, an additional mixing time must be maintained for 60 seconds.

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