TEMPERATURE IN THE ADHESIVE LAYER OF EXTERNALLY BONDED COMPOSITE REINFORCEMENT HEATED BY THE SUN

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Architecture, Civil Engineering, Environment

Silesian University of Technology

Subject: Architecture , Civil Engineering , Engineering, Environmental

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ISSN: 1899-0142

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VOLUME 9 , ISSUE 1 (March 2016) > List of articles

TEMPERATURE IN THE ADHESIVE LAYER OF EXTERNALLY BONDED COMPOSITE REINFORCEMENT HEATED BY THE SUN

Rafał Krzywoń *

Keywords : Externally Bonded Reinforcement FRP, Epoxy adhesive, Glass transition temperature, Solar heating

Citation Information : Architecture, Civil Engineering, Environment. Volume 9, Issue 1, Pages 79-84, DOI: https://doi.org/10.21307/acee-2016-009

License : (BY-NC-ND 4.0)

Published Online: 09-August-2018

ARTICLE

ABSTRACT

The paper describes the measurements of temperature growth in different types of the epoxy adhesive bonding external strengthening. A total of six types of models were tested: CFRP sheet and strip, two SRP tapes adhered to the concrete sample, CFRP strip and SRP tape on a timber sample. Changes in temperature were investigated during the summer in the southern Poland. The maximum measured temperatures for all models exceeded regarded as safe temperature limit of 45°C. The highest recorded adhesive temperature refers to a sample of CFRP strengthened timber and exceeded 70°C. For
the structure such a high temperature may result in almost complete loss of adhesion and thus the efficiency of strengthening. Test results may be a warning against the use of FRP external strengthening exposed to direct sunlight without any protection.

 

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REFERENCES

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