State of the art report on durability testing of building components and materials

Abstract

Sources of Information 2.0 NATURE OF AGING OR DETERIORATION 2.1 Rate of Aging 2.2 Environmental Factors Affecting Performance 2.2.1 Effect of Moisture 2.2.2 Effect of Temperature 2.2.3 Effect of Ultraviolet Radiation 2.3 Classification of Climates 2.4 Mechanical or Stress Factors 3.0 ESTIMATING THE DURABILITY OF BUILDING MATERIALS AND COMPONENTS BY MEASUREMENT OF PROPERTIES 3.1 Properties Used to Determine Durability 3.1.1 Visual Inspection and Appearance Properties.. .

Building research at the National Bureau of Standards 1968-1974

“…However, outdoor exposure testing is also necessary to establish a correlation between the effects of laboratory and in-service exposures (339,408).…”

An approach to improved durability tests for building materials and components

“…The importance of predicting durability has grown rapidly but, unfortunately, the state of durability testing is disorganized as has been pointed by Masters et al [2]. Although many durability tests are described in standards and specifications for building materials [3], there is seldom a fully satisfactory way of correlating, with each other or with in-service performance, the results of laboratory tests on different materials.…”

“…Confidence in the performance of traditional materials in the normal range of environments can be based on past experience, but it is difficult to establish the same confidence in the performance of innovative materials, or 2 of traditional materials in environments outside the normal range of experience, e.g., solar and nuclear energy applications. However, unless methods for providing the confidence at an acceptable cost can be established, a severe barrier to innovation will continue to exist.…”