PROBLEMS OF CLASSIFICATION OF CONSTRUCTION MATERIALS ON FIRE HAZARD. Part 2. COMPARATIVE ANALYSIS OF EXPERIMENTAL METHODS FOR FIRE HAZARD ASSESSMENT OF CONSTRUCTION MATERIALS, ACCEPTED IN RUSSIA AND THE EUROPEAN UNION COUNTRIES

The serious problem which limits a possibility to use of import construction materials (CÌ) in buildings with various functional purposes is mutual recognition of fire hazard test results for CM between the various countries. At present time in world practice there is such situation that each developed country has own methodological approaches to an assessment of fire hazard of the construction materials, accepted, as national standards. International Standard Organization (ISO) makes many attempts to unification of methodological approaches for assessment of fire hazard of construction materials by means of development of the international standards. This activity undoubtedly has results, so many of the countries develop its national standards on the basis of ISO, but this activity has no system character and goes rather slowly. Now in the course of unification of test methods the countries of the European Union which have developed system of the interstate EN standards (European Norms) most promoted. In this regard undoubted interest represents research of degree of compliance of the Russian and European methodologies of tests of CM on fire danger in aspect of possibility of comparison of results of tests without carrying out additional researches. In the second part of this paper the detailed comparative analysis of the classification parameters determined in the Russian and European standard tests for an assessment of flammability, flame spread, smoke production and toxicity of products of burning is carried out. The classification parameters which are using for definition of the above-mentioned fire characteristics in Russia and the European Union countries are considered, and also possibility of their comparison with each other when determining fire classes is analysed.