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weber.floor Politerm Blu

weber.floor Politerm Blu
weber.floor Politerm Blu

Product benefits

  • Carefully graded aggregates to produce a fine finish
  • Integrally coloured
  • Quality assured raw materials
  • Available in a range of colours

Politerm Blu is a superlight aggregate for the preparation of lightweight thermal insulation mortars. Politerm Blu, applied in specific thicknesses, is suitable for meeting the requirements of the European Directive 02/91/CE for the energy saving.

Politerm Blu represents the most complete range of superlight and highly thermal insulating aggregates in virgin expanded polystyrene beads with controlled density. It is pre-mixed, bead by bead, with E.I.A additive in the production phase, which allows for perfect mixing with water and binder, homogenous distribution in the mix and perfect pumping, thus eliminating bead segregation.

Sand-free lightweight thermal insulating mortars can be prepared with the Politerm Blu products, thus creating mixes with only Politerm Blu + Portland 32.5 R cement + water (see dosage table).

Product Features

Use

As an intermediate layer; Filling (Floor and/or basement)

  • System levelling.
  • Under sand + cement screeds.
  • Under self-levelling screeds.
  • Underfloor radiating heating.
  • Vaulted floor-levelling.
  • Under industrial flooring.
  • Under driveable asphalt surfaces.

Roofing; also with direct application of waterproofing(*)

  • Pitched roofs.
  • Flat roofs with or without falls.
  • Vaulted roofs.
  • Corrugated sheet iron.
  • Asbestos cement fibres (encapsulation).

(*) castings prepared with Politerm Blu are suitable for subsequent direct laying of waterproofing membranes (“hot” bituminous prefabricated elements, “cold” bituminous prefabricated elements, “cold” synthetic prefabricated elements, liquid bituminous coatings (provided they are solvent-free).

Features and Benefits

  • Carefully graded aggregates to produce a fine finish
  • Integrally coloured
  • Quality assured raw materials
  • Available in a range of colours

Technical Data

Lightweight thermal insulating screeds prepared with the products of the Politerm Blu range (no added sand).

Technical Characteristics

Based on virgin expanded polystyrene beads treated with a special additive, the superlight aggregates of the Politerm Blu range boast the following features:

  • Easy to mix, place and finish.
  • Cost effective.
  • Homogenous bead distribution gives good workability and predictable performance.
  • Good workability enables mixed material to be pumped 100 meters horizontally, 30 meters vertically.
  • No loss of workability, even when pumped long distances.
  • Mix design variable to produce densities from 200 to 1000 kg/m3.
  • Compatible with most finishing products and adhesives.

Politerm Blu beads

Fire properties: Non-flammable - when tested to ASTM D 1692-68.

Thermal properties

K-value of 0.065 W/mK to 0.1 W/mK depending on density.

Storage

Bags should be stored in a clean, dry place away from items which could split or damage the bags.

Documentation

Send or download the documentation

You can either send the documentation to an email address, or download it.

Preparation & Application

Applications

Thermal insulation mortar for concrete roof decks, underground floor slabs, basement walls, swimming pools etc. Lightweight filler for voids or levelling of floor slabs. Cavity fill for steel frame construction.

Installation

  • The material must be mechanically mixed in either a purpose made mixer/pump; conventional concrete mixer or truck-mixer or specialised mortar mixer/pump.
  • Placing and finishing equipment: as for normal concrete/screed application.

Dosages and Yields

Cement Dosage

Cement dosage kg./m3 200 250 300 350
Thermal Conductivity W/mk 0.065 0.067 0.080 0.103
Compressive strength N/mm2 0.69 0.83 1.48 1.69
Flexural strength N/mm2 0.37 0.46 0.60 0.59
Cohesion kPa 82.62 82.62 127.17 n.d
Hot-sealed membrane rupture N/50mm 57.00 n.d 62.00 21.28
Cold-sealed membrane rupture N/50mm 35.00 n.d 47.00 13.00
Elasticity module N/mm2 235.3 n.d 489.5 n.d
Permeability to water vapour μ 10.11 11.50 12.00 21.04
Shrinkage (NBN) mm/m 0.427 n.d 0.352 0.270
Fire reactivity M0 UBAtc - B2 DIN 4102 class
Inflammability ASTM D 1692-68 Non-flammable

 

Preparation of sand-free lightweight thermal insulation mortars

To obtain 200 litres of lightweight mortar To obtain 1m³ of light mortar
Density
kg./m3
Approx litres
of water
Cement
(*) kg.
POLITERM BLU
BAGS OF 170 l
Approx litres
of water
Cement
(*) kg.
POLITERM BLU
POLITERM BLU
FEIN
200 16 - 20 40 1 80 - 100 200 Bags
of
170 l
or Bags
of
420 l
250 20 - 25 50 100 - 120 250 5 2
300 24 - 30 60 120 - 150 300
350 28 - 35 70 140 - 175 350

 

 

Architectural specification

Thermal insulation to concrete roof decks shall be Politerm Blu, laid to falls at an average thickness of 100 mm reducing to a minimum of 50 mm at rainwater outlets. Preparation, mixing and curing shall be carried out in strict accordance with the manufacture’s instructions. Subsequent application of waterproofing shall not commence until the Politerm screed is free of residual moisture.

Determination of the thermal resistance “R” and thermal Transmittance “K” coefficients

Depending on the dosages of cement in the mix and the application thickness

Cement
kg./m³
Thermal
conductivity
W/mk
Coefficient Screed Thickness - cm
      4 5 6 7 8 9 10 15 20
200 0.065 R W/mk =
(thickness)
0.61 0.77 0.92 1.08 1.23 1.38 1.54 2.31 3.08
250 0.067 0.60 0.75 0.90 1.04 1.19 1.34 1.49 2.24 2.99
300 0.080 0.50 0.63 0.75 0.88 1.00 1.13 1.25 1.88 2.50
350 0.103 0.39 0.49 0.58 0.68 0.78 0.87 0.97 1.46 1.94
200 0.065 K W/mk =
(1/R)
1.64 1.30 1.09 0.93 0.81 0.72 0.65 0.43 0.32
250 0.067 1.67 1.33 1.11 0.96 0.84 0.75 0.67 0.45 0.33
300 0.080 2.00 1.59 1.33 1.14 1.00 0.88 0.80 0.53 0.40
350 0.103 2.56 2.04 1.72 1.47 1.28 0.15 1.03 0.68 0.52

 

Preparation of mortars made with Politerm Blu ready mix in a truck mixer

Dosages of 1m3 yield of lightweight thermal insulation mortar

Density
kg./m3
Approx.
litres of water
Cement(*)
kg.
Politerm Blu Ready Mix
bags yielding 500 l
Sand
kg.
200 80 - 100 200 2 /
250 100 - 120 250 /
300 120 - 150 300 /
350 140 - 175 350 /
400 100 - 120
+
sand hydration (**)
250 2 125
500 225
900 1.6 - 1.7 590

(*) use only Portland 32.5R cement
(**) also dependent on the actual residual moisture in the sand used