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Effect of synergistic environmental conditions on thermal properties of a cold curing epoxy resin

Maljaee, Hamid; Ghiassi, Bahman; Lourenço, Paulo B.

Authors

Hamid Maljaee

BAHMAN GHIASSI BAHMAN.GHIASSI@NOTTINGHAM.AC.UK
Assistant Professor in Structuralengineering

Paulo B. Lourenço



Abstract

This study presents an investigation addressing the effect of environmental conditions on the thermal properties of a cold curing epoxy resin used in repair and strengthening of masonry structures. The exposure conditions consist of laboratory indoor conditions (IC), long-term water immersion (WI), hygrothermal exposure (HG) and outdoor real exposure conditions (OC). The changes in the glass transition temperature, Tg, relaxation enthalpy and enthalpy peak temperature are monitored with Differential Scanning Calorimetry (DSC). Different measurement techniques for obtaining the Tg from DSC curves are also presented and discussed. The results showed a reduction of Tg in WI tests due to plasticization, which reversed at long-term periods. In HG conditions, post-curing of epoxy resin led to an increment of Tg. It was observed that the changes of Tg in OC conditions in the studied environment have a good correlation with the moisture absorption level and the obtained results from WI tests.

Journal Article Type Article
Publication Date Mar 15, 2017
Journal Composites Part B: Engineering
Print ISSN 1359-8368
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 113
Pages 152-163
APA6 Citation Maljaee, H., Ghiassi, B., & Lourenço, P. B. (2017). Effect of synergistic environmental conditions on thermal properties of a cold curing epoxy resin. Composites Part B: Engineering, 113, 152-163. doi:10.1016/j.compositesb.2017.01.027
DOI https://doi.org/10.1016/j.compositesb.2017.01.027
Keywords Mechanical Engineering; Industrial and Manufacturing Engineering; Mechanics of Materials; Ceramics and Composites
Publisher URL https://www.sciencedirect.com/science/article/pii/S1359836816316766
Additional Information This article is maintained by: Elsevier; Article Title: Effect of synergistic environmental conditions on thermal properties of a cold curing epoxy resin; Journal Title: Composites Part B: Engineering; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.compositesb.2017.01.027; Content Type: article; Copyright: © 2017 Elsevier Ltd. All rights reserved.
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