Epoxy Resins Used For The Repair Of Timber Structures: 203
The Problem Of Short- And Long-term Performance Evaluation
Author(s)
H. Cruz & J. S. Machado
Abstract
Epoxy resins used for the repair of timber
structures: The problem of short- and longterm
performance evaluation
H. Cruz & J. S. Machado
Laboratdrio Nacional de Engenharia Civil, Portugal
Abstract
Epoxy-based adhesives are currently adopted for repair works on site, as they are
suitable for jobs where the use of pressure is not possible and clean regular gluing
edges are difficult to get. However, some factors have limited a wider use of
structural adhesives, namely in historical timber structures. One reason is that a
long service life has not yet been fully proven for synthetic adhesives since the
natural ageing of actual glued joints is no older than sixty years and standard
accelerated ageing tests are not yet available. Several research projects have been
recently set aiming to gather a wider and systematic knowledge on the long-term
performance of epoxy adhesives as well as the bonding durability under high
service temperature or humidity, and the influence of variables like pre-ageing,
Keywords
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