Corrosion Engineering
Online ISSN : 1881-9664
Print ISSN : 0917-0480
ISSN-L : 0917-0480
Conference Publication
Degradation Characteristics of GFRP using Unsaturated Polyester as Matrix in Weak Alkaline Aqueous Solution
Yosuke TakeuchiAkira ItoHisatoshi KasaharaYosuke OkamuraJunichiro Tamamatsu
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2021 Volume 70 Issue 5 Pages 155-160

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Abstract

In order to verify the applicability of glass-fiber reinforced plastics with an unsaturated polyester matrix in manhole environments, degradation characteristics in a weak alkaline aqueous solution were evaluated based on solution immersion test. The decrease in flexural strength after immersion test at 313 K fitted well to the logarithmic approximation. Based on Arrhenius equation, we estimated the deterioration behavior under 288 K conditions, which corresponded to a manhole environment. However, since a problem in applying the logarithmic approximation became clear, a more appropriate estimation method is required.

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© 2021 Japan Society of Corrosion Engineering
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