HYDRANOL®

Hydranol® is an easy-to-use powdered additive for the creation of low-tension cement screeds offering a 28 day drying time with compressive and flexural strengths of C30 N/mm²  and F5 N/mm² respectively.

  • Drying Times

    after 28 days
  • Compressive and flexural strength

    up to CT-C30-F5
  • Foot traffic

    after 1 day
  • Normal site traffic

    after 7 days
  • Commisioning UFH

    after 14 days
  • Minimum nominal thickness 2 kN/m²

    from 35 mm
  • Surface strength

    ≥ 1,0 N/mm² (by C30-F5)
  • Shrinkage

    SW 2
  • Energy efficiency class

    up to EC 2
DOSAGE & CEMENT QUANTITY
MIXING INSTRUCTIONS
Notes
POINT LOADS INFORMATIONS
AREAS OF APPLICATION
Downloads

DOSAGE

Compressive strengthCT-C25-F4CT-C30-F5
Dosage1 bag1 bag
Cement quantity50 kg55 kg
Energy efficiency classEC 1EC 2
Commisioning cycle13 days13 days
  • The specifications refer to a standard mixing vessel with a net capacity of 200 litres and a filling quantity of approx. 320 kg screed gravel.
  • The strength class depends on the quality of the screed gravel used.
  • For screed thicknesses over 60 mm or for heated screeds over 70 mm: add 2 bags.
  • The specification ‘after the X. Day’ does not include the installation day.

MIXING INSTRUCTIONS

  1. Fill the screed machine halfway with sand plus the total amount of cement.
  2. Add one sachet of Hydranol® per mixture plus the mixing water and then fill the machine completely.
  3. Gradually add the required amount of residual water, until a stiff, plastic consistency is achieved.
  4. Allow a post-mixing time of 2 minutes to ensure homogeneous mixing and thus product functionality.

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 according to the PCT cement release list

*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.

CM MEASUREMENT

  • In the case of a Hydranol® screed, the CM measurement including guarantee declaration and acceptance of warranty by PCT is not included.
  • The CM measurement is therefore carried out after the 28th day by the floor layer as part of his inspection obligation.
  • If a CM measurement and approval is desired or required, this can be ordered from PCT for an additional charge. Please contact the internal sales department for this.

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.

FURTHER PRODUCT FEATURES

  • Stress and shrinkage-reduced according to SW 2
  • Density approx. 2,000 to 2,200 kg/m3
  • Better processing and lower peel resistance
  • Virtually independent of building climate conditions
  • Reduction of air content
  • Start ventilation after the 1st day
  • Moisture protection for at least 2 months
     

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
  • Unless otherwise defined, data 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 high-strength screeds with a fast readiness for covering
  • Screed suitable for indoor and outdoor areas as well as in permanently wet areas

*UK only

DOSAGE & CEMENT QUANTITY

DOSAGE

Compressive strengthCT-C25-F4CT-C30-F5
Dosage1 bag1 bag
Cement quantity50 kg55 kg
Energy efficiency classEC 1EC 2
Commisioning cycle13 days13 days
  • The specifications refer to a standard mixing vessel with a net capacity of 200 litres and a filling quantity of approx. 320 kg screed gravel.
  • The strength class depends on the quality of the screed gravel used.
  • For screed thicknesses over 60 mm or for heated screeds over 70 mm: add 2 bags.
  • The specification ‘after the X. Day’ does not include the installation day.
MIXING INSTRUCTIONS
Notes
POINT LOADS INFORMATIONS
AREAS OF APPLICATION