RETANOL® REDUCER 48

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RETANOL® REDUCER 48

The sustainable high-performance screed reduces the need for cement by 20 % and can reduce CO2 emissions by 48 % by switching from CEM I to CEM II cement. Whether 5-7*, 14* or 21* days - the reliable readiness for covering ensures a smooth construction process and satisfied clients. Your solution for economical and sustainable construction.

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  • Drying Times

    after the 5th–7th* day

  • Compressive and flexural strength

    up to CT-C35-F5

  • Foot traffic

    after 1 day

  • Normal site traffic

    after 2 days

  • Commisioning UFH

    after 1 day

  • Minimum nominal thickness 2 kN/m²

    35 mm

  • Surface strength

    ≥ 1,0 N/mm² (from C30-F5)

  • Shrinkage

    SW 2 (SW 1 with Agent R®)

  • Energy efficiency class

    up to EC 2

  • Certification

    EC1 Plus according to Emicode
  • Cement reduction: 20 %
  • CO2 reduction: up to 48 %
DOSAGE & CEMENT QUANTITY
MIXING INSTRUCTIONS
Notes
POINT LOADS INFORMATIONS
AREAS OF APPLICATION
Downloads

DOSAGE

Compressive strengthCT-C20-F4CT-C20-F4 CT-C25-F4CT-C30-F5CT-C30-F5CT-C35-F5
Drying timesafter 18-21* dayafter 10-14* dayafter 5-7* dayafter 18-21* dayafter 10-14* dayafter 5-7* day
Dosage250 ml300 ml400 ml250 ml300 ml400 ml
Cement quantity40 kg40 kg 40 kg 50 kg50 kg50 kg
Energy efficiency classEC 1EC 1EC 1EC 2EC 2EC 2
Site trafficafter 5 daysafter 4 daysafter 3 daysafter 5 daysafter 4 daysafter 3 days
Commisioning UFHafter 5 daysafter 2 daysafter 1 dayafter 5 daysafter 2 daysafter 1 day
Commisioning cycle14 days10 days6 days14 days10 days6 days

*with underfloor heating

  • Do not exceed the maximum dosage of 500 ml.
  • The specifications refer to a standard mixing vessel with a net capacity of 200 litres and a filling quantity of approx. 320 kg screed sand.
  • The strength class depends on the quality of the screed sand used.
  • The specification ‘after the X. Day’ does not include the day of installation.
  • For screed thicknesses of more than 60 mm, unheated, and 70 mm, heated, always dose with 350 ml.
  • For nominal thicknesses over 80 mm, readiness for covering may be delayed. Therefore, consult with technical support find a joint solution.

MIXING INSTRUCTIONS

  1. Shake the container well to mix the Retanol® Reducer 48 additive to a consistent colour before use, and then shake as required throughout the installation to maintain the consistency of the liquid (every 30 min).
  2. Fill half of mixing vessel with 0-4 mm screeding sand and required cement.
  3. Add Retanol® Reducer 48 to the first mixing water (usually 5-10 litres), then fill the machine completely.
  4. Gradually add the required amount of residual water until a stiff-plastic consistency is achieved.
  5. Let the screed mix for a full 2 minutes.

SAND, WATER, CEMENT

  • Grading curve: Sand must be according to DIN 1045-2 A/B /BS 13139*, for the production of screed concrete, grain size range 0-4 mm
  • W/C value:Min 0,4, max. 0,6
  • Cement: Use of cement grade 42.5 R/N according to PCT cement release list
  • CO2 savings through cement selection:
    • CEM I-Cement: Reduces CO2 emissions by approx. 20 % compared to a standard mix with CEM I
    • CEM II-Cement: Reduces CO2 emissions by approx. 48 % compared to a standard mix with CEM I

*UK only

PROCESSING INSTRUCTIONS

  • Working time: 60 minutes
  • Finishing time: 90 minutes
  • Outside temperature: +5 °C to +28 °C for screed, environment and substrate
  • Do not mix with other screed additives
  • Never reactivate screed that has already set with water

Airing

  • If the air humidity is 55 % or higher, ventilate 3-4 times a day for 20-30 minutes 24 hours after screed installation in order to achieve readiness for covering.
  • If the humidity is below 55%, contact PCT technical support to avoid cupping etc.

FURTHER PRODUCT FEATURES

  • Shrinkage can be further reduced in combination with Agent R®
  • Density approx. 2,000 to 2,200 kg/m3
  • Thermal conductivity approx. 2.0-2.4 lambda
  • Better processing and lower peel resistance
  • Minimally affected by building climate conditions
  • Reduction of air content
  • Start ventilation after 24 hours
  • Moisture protection for at least 4 months

Protective instructions during and after installation

  • We recommend our PROTEC-ES/SP product to protect against drying out too quickly, depending on the floor covering. We recommend consulting the PCT technical support team.
  • Protect the screed against rapid drying of the surface due to draughts, sunlight and low humidity.
  • Large window fronts and floor-level glass façade areas should be darkened if necessary.
  • Cover screeds in outdoor areas or enclose areas to be covered. Contact PCT technical support if screed is to be laid outdoors.

CM MEASUREMENT

  • A Retanol® Reducer 48 screed is considered a proprietary screed within its first 56 days after installation , it can not be tested with a RH test, it must be tested with a calcium carbide method before covering.
    Can be tested and approved by PCT Chemie in regard of rest moisture by PCT Chemie in form of a CM measurement.
  • The CM measurement, including the issuing of a guarantee declaration and the assumption of the warranty, can be ordered free of charge from PCT Chemie during this period by the Retanol® specialist company, floor layers, tilers or the client. Further information on the release of the screed can be found on our homepage under ‘Guarantee’ (EU only).
  • After 56 days, the Retanol® screed is assessed according to the standard values of DIN 18560/BS-8203*.

*UK only

POINT LOADS INFORMATIONS

Area load
Point load		2,0 kN/m2
1,0 kN		3,0 kN/m2
2,0 kN		4,0 kN/m2
3,0 kN		5,0 kN/m2
4,0 kN		7,5 kN/m2
6,0 kN		10,0 kN/m2
8,0 kN
Flexural strength ≥ F440 mm50 mm55 mm60 mmn/an/a
Flexural strength ≥ F535 mm45 mm50 mm55 mm75 mm90 mm
  • Specifications, unless otherwise defined, as minimum nominal thickness (without UFH) or minimum pipe cover (with UFH).

AREAS OF APPLICATION

  • For all screeds according to DIN 18560, part 1–7, BS 13892*/ BS 8204*
  • Particularly suitable for:
    • Screeds with variably adjustable readiness for covering
    • Increased strength
    • Reduction of cement quantities and CO2 emissions
    • Screeds indoors and outdoors and in permanently wet areas

*UK only

Product data sheet

Winter rules

DOSAGE & CEMENT QUANTITY

DOSAGE

Compressive strengthCT-C20-F4CT-C20-F4 CT-C25-F4CT-C30-F5CT-C30-F5CT-C35-F5
Drying timesafter 18-21* dayafter 10-14* dayafter 5-7* dayafter 18-21* dayafter 10-14* dayafter 5-7* day
Dosage250 ml300 ml400 ml250 ml300 ml400 ml
Cement quantity40 kg40 kg 40 kg 50 kg50 kg50 kg
Energy efficiency classEC 1EC 1EC 1EC 2EC 2EC 2
Site trafficafter 5 daysafter 4 daysafter 3 daysafter 5 daysafter 4 daysafter 3 days
Commisioning UFHafter 5 daysafter 2 daysafter 1 dayafter 5 daysafter 2 daysafter 1 day
Commisioning cycle14 days10 days6 days14 days10 days6 days

*with underfloor heating

  • Do not exceed the maximum dosage of 500 ml.
  • The specifications refer to a standard mixing vessel with a net capacity of 200 litres and a filling quantity of approx. 320 kg screed sand.
  • The strength class depends on the quality of the screed sand used.
  • The specification ‘after the X. Day’ does not include the day of installation.
  • For screed thicknesses of more than 60 mm, unheated, and 70 mm, heated, always dose with 350 ml.
  • For nominal thicknesses over 80 mm, readiness for covering may be delayed. Therefore, consult with technical support find a joint solution.
MIXING INSTRUCTIONS
Notes
POINT LOADS INFORMATIONS
AREAS OF APPLICATION
Downloads