Thermal deterioration of marbles: Gloss, color changes
Küçük Resim Yok
Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Sci Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Marbles are widely used as construction materials because of their high resistivity to common conditions, and to their aesthetic appeal. Aesthetic qualities such as color, gloss and polishability are important for rock used as constructions materials. But marbles as building stones show complex weathering phenomena. Thermal effects are important weathering factors affecting the aesthetical and physico-mechanical properties of marbles. This study assesses changes to surface aesthetic properties of some marble samples due to heat. For this purpose thermal ageing and thermal shock cycles were inflicted on six types of marble samples of differing colors. Marble samples of shiny surfaces were prepared. In thermal shock cycles, samples were heated up to 105 degrees C for 18 h then placed for 6 h in distilled water. In thermal ageing cycles, the samples were placed in an oven for 18 h then allowed to cool for 6 h at room temperature. At the end of cycles 4, 8, 12, 16 and 20, gloss measurements were recorded; at the end of the last cycles color changes were evaluated. The relationships between gloss and color parameters were also investigated. Thermal shock has more important effects on marble surface properties than the thermal ageing cycle. L* and b* parameters constituted an important effect on glossiness and these parameters were strong indicators for predicting gloss loss. (C) 2015 Elsevier Ltd. All rights reserved.
Açıklama
Anahtar Kelimeler
Thermal shock, Thermal ageing, Gloss, Color parameters
Kaynak
Construction and Building Materials
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
102
