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

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

Hamid Maljaee; Bahman Ghiassi; Paulo B. Lourenço

2017

Scholarcy highlights

  • 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, long-term water immersion, hygrothermal exposure and outdoor real exposure conditions
  • The changes in the glass transition temperature, Tg, relaxation enthalpy and enthalpy peak temperature are monitored with Differential Scanning Calorimetry
  • The results showed a reduction of Tg in WI tests due to plasticization, which reversed at long-term periods
  • 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
  • In hygrothermal exposure conditions, post-curing of epoxy resin led to an increment of Tg. It was observed that the changes of Tg in outdoor real exposure conditions conditions in the studied environment have a good correlation with the moisture absorption level and the obtained results from water immersion tests

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