METHOD FOR DETERMINATION OF FIRE RESISTANCE OF CONCRETE AND REINFORCED CONCRETE WALLS OF BUILDING Russian patent published in 2009 - IPC G01N25/50 

FIELD: physics, measurement.

SUBSTANCE: invention is related to the field of fire safety of buildings. Testing of concrete and reinforced concrete walls of building is carried out without destruction of unit quality indices in complex, assessing their value with the help of statistic control. For this purpose geometric dimensions of concrete and reinforced concrete walls are determined, as well as circuit of dangerous sections heating under conditions of fire, extent of concrete reinforcement and conditions of their fixation; density, humidity, heat conductivity and heat capacity of concrete in natural condition and indicator of concrete heat diffusion under conditions of fire; value of rated loads onto concrete and reinforced concrete walls in case of fire test; extent of their dangerous sections stressing. Limit of fire resistance for concrete and reinforced concrete walls is determined according to polyparametric dependency.

EFFECT: validity of determination and lower economical expenses.

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