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June 21, 2026Japanese Journal of JSCE

Research on Ultraviolet Degradation and Reapplication of Top Coatings to Improve the Durability of Concrete Surface Coverings

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Authors

KKKenichi KuribayashiPfizer (United States)MNMika NAKAHARAMHMakoto HisadaTokyo Institute of Technology

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Implication

Randomized trial assesses UV degradation in top coatings for concrete, suggesting improvements for durability.

Key Points

  • This research aims to evaluate the UV degradation of top coatings used on concrete surfaces and identify reapplication strategies to enhance durability.
  • Estimated UV intensity at various locations on elevated bridge sound barrier walls based on measured data.
  • Compared UV intensity ratios across different sections and regions, finding up to 75% intensity at the top and 40% at the sides.
  • Analyzed the deterioration of applied top coatings in relation to UV exposure levels over time.
  • Observed surface shape changes in top coatings with increased UV intensity.
  • Identified fine cracks in coatings with high cumulative UV exposure, indicating end-of-life weather resistance.
  • Proposed guidelines for reapplication timing and recommendations for alternative top coating materials.

Cite This Study

Kuribayashi et al. (2026) studied this question.

synapsesocial.com/papers/6a37813124f042ddf4c5b18bhttps://doi.org/10.2208/jscejj.25-00018
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