Durability of adhesives and matrices for polymer composites used in restoration and rehabilitation of building structures under natural and accelerated weathering conditions pp.319-344
Authors: (Mariaenrica Frigione, Department of Engineering for Innovation, University of Salento, Italy)
Abstract: The success of the fiber-reinforced polymer (FRP) systems in the restoration and rehabilitation of civil and monumental structures is due to their excellent properties, generally superior than those of traditional building materials. Of great importance, however, is the behavior of the repaired structure under loading and its durability in the outside climate. The lack of specific standards for durability investigation of materials employed in such applications makes difficult the assessment of reliable theoretical models. As an example, the available standard tests for adhesives generally refer to resins cured at elevated temperatures, neglecting the peculiarities of “cold-cured” adhesives. In this chapter, the durability of the base components of FRP specifically designed for civil engineering industry, is reviewed. The most common environmental agents, mostly responsible for the deterioration of the materials performance, are examined. Finally, standardized accelerating tests are discussed as an effective method to predict the long term behavior of the weathered materials.