Ageing Effects on the Fire Resistance of Building Structures. Brandforsk Project 322-011

摘要

The fire resistance of structures is based on tests performed on specimens manufactured shortly before the fire test. The only requirement in respect of conditioning is that the temperature and moisture content shall be the same as expected in practical use. Since there are many components and materials used in different building structures, it is of great importance that they behave in the same manner throughout the whole life of the structure as when the fire test was performed. The present study has examined some different materials and building structures in order to determine possible aging problems with respect to fire resistance. The objective of the study has been to see if there are materials or components used in fire-resisting structures that may change their characteristics over the assumed life span of the structures.