Polystyrene formwork block H 43/15+19

cement woodfor wallinsulating

Standard H blocks have internal insulation and 15 cm of concrete. Explanatory note 1. Net dry density = (500÷50) Kg/m3 2. Sintered expanded polystyrene with graphite additive. Density = 0.15 KN/m3; A = 0.031 W/m.K 3. Concrete density 25 KN/ m2; dry A = 1.72 W/m.K; ^ = 1.91 W/m.K with humidity in equilibrium with air at 23° C and 50% RH (ref. UNI EN 1745 and UNI EN 12524). 4. R= Dry thermal resistance without coating and without thermal resistance limitation. Evaluation according to the theoretical method UNI EN 1745:2012. Three-dimensional method. 5. U= Dry thermal transmittance, with 2 cm lime-sand render on the outside, 2 cm lime-sand render on the inside, with limit thermal resistance, in dry conditions. Evaluation according to UNI EN 1745:2012 theoretical method. Three- dimensional method. 6. R= Thermal resistance, without plaster, without limitation of thermal resistance and with humidity in equilibrium with air at 23° C and 50% RH. Evaluation according to the theoretical method UNI EN1745:2012. Three-dimensional method. 7. U= Thermal transmittance, with 2 cm lime-sand render on the outside, 2 cm lime-sand render on the inside, with limiting thermal resistance and humidity in equilibrium with the air at 23° C and 50% relative humidity. Assessment according to UNI EN 1745:2012 theoretical method. Three-dimensional method. 8. Ref. UNI - EN ISO 10456 standard for a 24-hour period 9. Certified value of theoretical calculation UNI EN 12354-1:2002 10. Ref. UNI 1365-1 standard. REI : - Strength: ability to maintain structural stability - Airtightness: ability to prevent the spread of fire and smoke through the air.