Traverten Plakalarda Gözenek Dolgu Malzemesi Ýçin Alternatif Bir Karýþýmýn Kullanýmýnýn Deðerlendirilmesi

Travertenler doðal gözenekli yapýlarý nedeniyle dekoratif anlamda kullanýlabilirliði fazla olan doðaltaþlardýr. Bu gözenekli yapý, taþta su emmenin de yüksek olmasýna neden olmaktadýr. Bu yüzden özellikle dýþ mekan uygulamalarýnda taþýn gözenekliliðini ve dolayýsý ile atmosferik koþullardan etkilenme derecesini azaltmak amacýyla dolgu iþlemi uygulanmaktadýr. Dolgu için toz kalsit, beyaz çimento ve çeþitli renklendiriciler yaygýn olarak kullanýlmaktadýr. Karýþým içerisinde kalsitin bulunmasý doðrudan maliyeti artýrmaktadýr. Bu çalýþmada kalsit yerine traverten tozunun kullanýlabilirliði araþtýrýlmýþtýr ve bu amaçla aðýrlýkça oluþturulmuþ 4 farklý karýþým oranýnda (1/0.5, 1/0.7, 1/1, 1/1.5) traverten tozu /çimento karýþýmlý dolgu malzemeleri laboratuvar ortamýnda üretilmiþtir. Diðer bir grup dolgu malzemesi ise ticari üretimde yaygýn olarak kullanýlan kalsit/çimento (1/1 oranýnda) karýþýmý þeklinde oluþturulmuþtur. Elde edilen sonuçlar dolgulu travertenlerde birim hacim aðýrlýðý deðerlerinde % 0.32 – 0.54 oranlarýnda artýþ, aðýrlýkça su emme deðerlerinde ise % 11.71 – 19.25 oranlarýnda azalma olduðunu ortaya koymuþtur. Ýncelenen doðaltaþ grubunun bütünü için kapiler su emmenin belirgin bir þekilde % 27.95 – 54.62 arasýnda deðiþen oranlarda azaldýðý tespit edilmiþtir. Benzer þekilde görünür porozite deðerlerinde de % 9.54 – 19.21 oranýnda azalmalar meydana gelmiþtir. Elde edilen sonuçlara göre 1/1 ve 1/0.7 oranlý (traverten tozu/çimento) karýþýmlarda birim hacim aðýrlýklardaki artýþla su emme deðerlerinde en fazla azalmalarýn olduðu belirlenmiþtir. Bu çalýþma ile elde edilen veriler, üretimi yapýlan travertenin kendi tozunun kullanýlmasý ile oluþturulacak dolgularýn uygulamada tercih edilmesi ile hem artýklarýn deðerlendirilmesi hem de üretim maliyetlerinin düþürülebileceði ortaya konulmuþtur.

Evaluation of the Use of an Alternative Mixture for Pore Filling Material on Travertine Slabs

Because of their natural porous structure, travertines are widely preferred building stones in terms of their decorative properties. This porous structure causes the stone having high water absorption capacity. Therefore, especially in outdoor applications, filling process is applied in order to decrease the porosity of the stone and thus lower the effect of atmospheric conditions. Powder calcite, white cement and various colorants are widely used in filling operations. The presence of calcite in the mixture directly increases the cost. In this study, the use of travertine powder instead of calcite was investigated and for this purpose, mixed filling materials with travertine powder/cement ratio were produced in laboratory condition as 4 different mixing ratios by weight (1/0.5, 1/0.7, 1/1, 1/1.5). Another group of filling material is formed as a mixture of calcite/cement (1/1) which is widely used in commercial production. The obtained results showed that the unit weight values were increased about 0.32 - 0.54 % and the water absorption values decreased by 11.71 - 19.25 % when travertine powder filling was used. It was determined that capillary water absorption values significantly decreased between 27.95% - 54.62 % for all natural stone groups. Similarly, there was a decrease about 9.54 - 19.21 % in the apparent porosity values. The results revealed that, in the mixing ratios of 1/1 and 1/0.7 (travertine powder/cement) an increase in unit weight values and the highest reduction in water absorption values were observed. The data obtained by this study are presented in such a way that both the wastes can be evaluated and the production costs can be reduced by the choice of the application of filler mixtures to be formed by the use of their own powder.