Sandak J., Acquah R., Földvári-Nagy E., Sandak A., Can A., Sivrikaya H., ...Daha Fazla
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS/HOLZ ALS ROH - UND WERKSTOFF, cilt.84, sa.6, ss.1-17, 2026 (SCI-Expanded, Scopus)
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Yayın Türü:
Makale / Tam Makale
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Cilt numarası:
84
Sayı:
6
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Basım Tarihi:
2026
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Doi Numarası:
10.1007/s00107-026-02508-z
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Dergi Adı:
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS/HOLZ ALS ROH - UND WERKSTOFF
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Derginin Tarandığı İndeksler:
Natural Science Collection (ProQuest), Earth, Atmospheric, & Aquatic Science Collection (ProQuest), Scopus, Science Citation Index Expanded (SCI-EXPANDED), Chimica, Compendex, ICONDA Bibliographic, INSPEC, The International Construction Database (ICONDA)
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Sayfa Sayıları:
ss.1-17
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İstanbul Üniversitesi-Cerrahpaşa Adresli:
Evet
Özet
Abstract
This study investigates the colour evolution of Norway spruce wood during one year of natural weathering across multiple European locations as part of a Round Robin experiment. Colour measurements (
CIE Lab
) were performed on samples with monthly-resolved exposure duration to quantify discolouration and determine total colour change (
ΔE
). The results show that weathering induces rapid colour modification, with the most pronounced changes occurring within the first month of exposure. A clear two‑stage behaviour was identified: an initial colour‑enrichment phase, characterised by increases in
CIE a
and
CIE b
, followed by progressive decolouration and greying, reflected primarily through decreases in
CIE L
. Although the fundamental mechanisms of photodegradation were consistent across all sites, the rate and extent of discolouration varied substantially with local climatic conditions. Samples exposed in Turkey exhibited the highest
ΔE
values, whereas those in the UK showed the lowest. This difference is consistent with expected climatic variations in solar radiation, moisture conditions, and temperature fluctuations between the two locations, which are known to influence weathering kinetics. The dataset provides a robust basis for linking colour change and its dynamics with site‑specific climate parameters enabling the development of a dedicated dose-response model.