GOST 31924-2011 Thick building materials and products of high and medium thermal resistance. Methods of determination of thermal resistance by means of guarded hot plate and heat flow meter
GOST 31925-2011 Building materials and products of high and medium thermal resistance. Methods of determination of thermal resistance by means of guarded hot plate and heat flow meter
GOST 31924-2011 history
2011GOST 31924-2011 Thick building materials and products of high and medium thermal resistance. Methods of determination of thermal resistance by means of guarded hot plate and heat flow meter