The Isotex wood cement formwork blocks are insulated with Neopor® BMBcert insulating insert from BASF (15% recycled or 100% recycled). They are blocks with high thermal insulation suitable for the construction of external load-bearing walls with excellent performance: fire resistance, seismic resistance and energy efficiency. The supporting formwork blocks are laid dry: on each row the horizontal reinforcement is inserted into the appropriate lunettes, up to a height of 6 row (1.5 metres). At this point the walls are completely filled with concrete. The vertical reinforcement is always inserted in conjunction with the concrete casting. This type of block is standard and therefore ready for delivery. REI 120 fire resistance – Reaction to fire B, s1-d0 – facade fire reaction (Lepir2 test) Acoustic insulation in class I- Energy class NZEB/ZEB (0 emissions).
The Isotex HDIII 30/7 formwork block is used to create external load-bearing walls. Inside the formwork, there is an insulating insert in eco-sustainable EPS, made of Neopor® BMBcert by BASF up to 100% recycled (Biomass). It has a thickness of 30 cm and a continuous insulating insert of 7 cm, with a concrete cast thickness of 15 cm, as per technical standards. Thermal transmittance U=0.34 W/m²K. The block has the exclusive features of the entire Isotex product range. The wood is mineralised with a natural mineral that makes it inert, therefore resistant to fire (REI120), parasites and atmospheric agents. Reaction to fire B,s1-d0. Excellent facade fire behaviour (Lepir2 Test).
Sustainability certification:
Indicative permissible flow rate (t/m) RcK – 30 N/mm2 interp. h = 3.00 m
35
Thermal transmittance U of the plastered wall including boundaries W/m2 K of wall. 3D method *
0,34
Thermal transmittance U of the plastered wall including boundaries W/m2 K of wall. 2D method **
0,30
Periodic thermal transmittance YIE [W/m2K] [W/m2K]
0,0195
Acoustic insulation ** (dB)
[54***]
Concrete volume requirement l/m2
130
Weight of the blocks Kg/m2
80
Weight of the single block (without concrete) Kg
10
Weight of the wall filled with non-plastered CONCRETE Kg/m2
392
Concrete thickness (cm)
15
Block wall thickness (cm)
4
Block size (cm)
50x25x30
REI Class fire resistance
120
Graphite thickness (cm)
7
* The calculation of thermal transmittance has been performed according to the criteria of standards UNI 10355 and UNI EN ISO 6946, using a three-dimensional finite element calculation application validated according to EN 10211/1 and on the basis of thermal conductivity data obtained from experimental evidence.
**Indicative two-dimensional calculation according to standards UNI-TS 13788, UNI 10355 and UNI 10351.
*** Note: The test certificates can be requested from ISOTEX or consulted on the WEBSITE. The tests were field tests in which the data was elaborated according to the indications provided by technical standards UNI EN ISO 140 and UNI EN ISO 717.
****Tests performed in the laboratory according to standards UNI EN ISO 140-3:2006 and UNI EN ISO 717-1:2007.
*****Tests performed in the laboratory according to standards UNI EN ISO 10140-2:2010 and UNI EN ISO 717-1:2007.
In reference to the type of material purchased, the company will provide EC Declaration of Performance (DOP).
