Risk of warming of bonded FRP strengthenings under sun exposition


Vol. 537 (5) 2017 / wtorek, Październik 23rd, 2018

R. Krzywoń

DOI: 10.15199/33.2017.05.03

Volume 537: Issue 5
Pages 10-12
Accepted for publication: 07.09.2016 r.

Designers of EBR FRP structural strengthening systems rarely provide any form of protection from excessive warming caused by sunlight, while the most popular epoxy resins may lose their mechanical properties at a temperature of about 50°C. In the first part, an article gives an overview of actual studies on the influence of glass transition temperature on the behavior of adhesives used in strengthening systems. In the second part, shows the results of temperature measurements of several types of concrete and timber samples subjected to direct exposure of the sun for summer conditions in the southern Poland. The readings showed a temperatures above 60°C, far exceeding the allowable working conditions for most strengthening systems based on epoxy resins.
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dr inż. Rafał Krzywoń, Politechnika Śląska w Gliwicach, Wydział Budownictwa

dr inż. Rafał Krzywoń

rafal.krzywon@polsl.pl

Full paper is available at Publisher house SIGMA-NOT Sp. z o.o. webpage

DOI: 10.15199/33.2017.05.03