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Abstract
Buildings, other structures, their parts and materials must perform over time in such a way that their properties exceed the minimum accepted values for a certain time when properly maintained. This time is called the service life. Durability is an important aspect in this connection as it describes the ability of an object to withstand the effects of the many degrading factors originating from the environment. The durability of a building element (e.g., roof, wall) is here studied as the durability of materials as a part of the structure. Development of methodologies and methods and the collection of data is needed to be able to predict the service life more precisely than before. Feed-back information from in-service conditions, practical, semi-practical and field tests are performed in conjunction with laboratory tests with large or small test specimens. In all cases it is necessary for degradation, the degradtion mechanism and the basic properties of the object. The data have to be processed. The increasing utilization of models, need of basic knowledge and application of statistical methods has to be noticed. Examples are given and some problems areas identified.
Buildings, other structures, their parts and materials must perform over time in such a way that their properties exceed the minimum accepted values for a certain time when properly maintained. This time is called the service life. Durability is an important aspect in this connection as it describes the ability of an object to withstand the effects of the many degrading factors originating from the environment. The durability of a building element (e.g., roof, wall) is here studied as the durability of materials as a part of the structure. Development of methodologies and methods and the collection of data is needed to be able to predict the service life more precisely than before. Feed-back information from in-service conditions, practical, semi-practical and field tests are performed in conjunction with laboratory tests with large or small test specimens. In all cases it is necessary for degradation, the degradtion mechanism and the basic properties of the object. The data have to be processed. The increasing utilization of models, need of basic knowledge and application of statistical methods has to be noticed. Examples are given and some problems areas identified.
Date
9/1981
9/1981
Author(s)
Technical Research Center of Finland
Technical Research Center of Finland
Page(s)
63-
63-
Keyword(s)
corrosion of reinforcement; degradation; durability; weathering; frost resistance; service life; performance over time
corrosion of reinforcement; degradation; durability; weathering; frost resistance; service life; performance over time