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Lightweight Filled Epoxy Resins for Timber Restoration

  • Torben Wiegand
  • Andrea Osburg
Conference paper

Abstract

Currently used methods for the restoration of damaged timber constructions involve the removal of huge parts of the intact wood, although it is often desired to largely keep it. Furthermore, it is not useful to strain the remaining timber with the high weight of compactly filled mortar. Thus, the application of a high-performance, lightweight filled epoxy resin can increase the amount of remaining historic structures and, in addition, strengthen it. Fillers like foam glass are comparatively cheap, decrease the density (<1 g/cm3), and increase the workability of the hardened material. A further reduction of the density without an appreciable reduction of the material’s stability was possible by using high-performance hollow glass microspheres as filling material. The mechanical properties of numerous mortars have been determined, and materials with a density as low as 0.44 g/cm3 but also with high strengths have been developed. It was possible to increase the mechanical properties by using additives, and epoxy resins based on renewable sources have been used as binders. Also, the thermal behaviour of chosen mortars has been investigated by TGA, coupled with FTIR, in order to identify the degradation products.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Bauhaus-Universität Weimar, Faculty of Civil Engineering, F. A. Finger-Institute for Building Material Engineering, Chair of Building Chemistry and Polymer MaterialsWeimarGermany

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