Effect of synergistic environmental conditions on thermal properties of a cold curing epoxy resin
Maljaee, Hamid; Ghiassi, Bahman; Lourenço, Paulo B.
BAHMAN GHIASSI BAHMAN.GHIASSI@NOTTINGHAM.AC.UK
Assistant Professor in Structuralengineering
Paulo B. Lourenço
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|
|Peer Reviewed||Peer Reviewed|
|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|
|Keywords||Mechanical Engineering; Industrial and Manufacturing Engineering; Mechanics of Materials; Ceramics and Composites|
|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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