The effects of freeze–thaw (F–T) cycles on the Gödene travertine used in historical structures in Konya (Turkey)

Gökçe, Mehmedi Vehbi; İnce, İsmail; Fener, Mustafa; Taşkıran, Taha; Kayabalı, Kamil

doi:10.1016/j.coldregions.2016.04.005

Cited by 37 publications

(12 citation statements)

References 27 publications

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“…Previous studies suggest that the porosity and pore size distribution have an important role in the durability of construction materials under laboratory conditions (Benavente et al 2004;Martínez-Martínez et al 2013;Al-Omari et al 2015;Pápay and Török 2018) and also in exposed buildings (Thomachot-Schneider et al 2011, Vázquez et al 2015, Gökçe et al 2016. In this study, the most durable mortars were the ones of D, T, and R ( Figs.…”

Section: Discussionmentioning

confidence: 48%

“…Some of the salt tests could cause higher structural stress on the stone matrix than frost damage-what suggests, that weathering process is faster in a salt-rich environment (Cárdenes et al 2013). Stone and mortar damage depends on relative humidity (RH), temperature, and pore structure in salt-rich environment (Linnow 2007), while in region, the damage is mainly controlled by the presence of the water, the porosity, the pore size distribution, and the saturation rate (Ruedrich et al 2011, Al-Omari et al 2015, Gökçe et al 2016. Frost damage can lead to material loss, and in addition, it also decreases the stone durability against other stress factors such as salts (Yu and Oguchi 2010).…”

Section: Introductionmentioning

confidence: 99%

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Freeze-thaw durability of repair mortars and porous limestone: compatibility issues

Török

Szemerey-Kiss

2019

Prog Earth Planet Sci

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Freeze-thaw cycles can cause considerable damage to porous materials and thus have an adverse effect on the durability of mortars and porous stone. To assess the behavior and frost resistance of two types of porous limestone, three commercially available repair mortars and four mixtures of laboratory-prepared repair mortars were subjected to freeze-thaw cycles according to EN 12371. During the test, samples of stone and mortar were bonded together and the weight loss was continuously monitored. The adhesion bond between the stone and the mortar was also observed during the cycles. Petrographic analysis and thin sections were also made before and after the freeze-thaw test. The pore size distribution (mercury intrusion porosimetry, MIP) of mortars and stones was also measured. The test showed that most of the repair mortars were damage more than porous limestone due to frost action. Two exceptions are two commercial available repair mortars. These mortars were able to keep the adhesion with the stone, and the frost did not modify significantly the cubic shape of the test specimens, only rounding of the edges was observed. All other samples were broken during the frost tests; stone/mortar interface was dismounted. Other typical damage features such as delamination, blistering, powdering, and granular disintegration were also observed leading to the gradual surface loss of the material. Our tests proved that low pozzolanic cement content in mortars decreases the material durability. According to the pore size distribution (MIP), the small pores (around 0.1 μm) control the weathering behavior of tested porous materials.

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Section: Discussionmentioning

confidence: 48%

Section: Introductionmentioning

confidence: 99%

Freeze-thaw durability of repair mortars and porous limestone: compatibility issues

Török

Szemerey-Kiss

2019

Prog Earth Planet Sci

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“…Upon examining the prepared Schmidt hammer rebound maps, the hardness values were found to be low in the abutments and arch of the bridge. Moreover, there is also a significant relationship between the deterioration process and sizes of the building stones (Gökçe, İnce, Fener, Taşkıran, and Kayabali, 2016;Korkanç, 2018). As stone sizes decrease, the ratio of deterioration increases and the SHR value decreases.…”

Section: Non-destructive Testing Resultsmentioning

confidence: 99%

The Determination of Deteriorations on the Mısırlıoğlu Bridge (Konya, Turkey) by Non-Destructive Techniques (NDT)

Tosunlar

Hatır

İnce³

et al. 2018

ICONARP

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Transportation has been one of the basic requirements of humanity since the earliest periods of civilization. One of the architectural structures designed to meet this requirement is historic stone bridges. One of the most important stages in these conservation works is the assessment of materials that constitute the structures. Non-destructive testing techniques (NDT) are widely used to obtain qualitative data and also make comparisons. In this study, it was aimed to determine deteriorations on the Mısırlıoğlu Bridge located in Sille settlement of Konya by NDT technique and to form the map from obtained values to perform conservation works. As a result of the analyses performed, considerable deteriorations in the building stones used in the abutments and arches of the structure were determined. Besides, it is detected that uniaxial compressive strength (UCS) value of the fresh samples is high (UCS: 61 MPa) while UCS values of the building stones used at the bridge decrease in the range of low and high (8-51 MPa) due to the atmospheric effects.

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“…Yapıda gözlenen bozulmalar genellikle üç ana başlık altında değerlendirilmektedir (atmosferik, biyolojik ve antropojenik). Atmosferik etkiler, donma-çözünme [33][34][35][36][37], termal etkiler [38][39][40][41], ıslanma-kuruma [42,43] ve tuz kristalizasyonu [44][45][46] olarak sıralanabilir. Biyolojik etkiler ise bitkilerin, likenlerin, mantarların, bakterilerin ve alglerin kayaların fiziksel ve kimyasal parçalanmasına doğrudan ve dolaylı katkısı olarak tanımlanmaktadır [47][48][49][50].…”

Section: Tartişma Ve Sonuçlarunclassified

Ak Medreseni̇n (Ni̇ğde) Yapiminda Kullanilan Taşlarin Mühendi̇sli̇k Özelli̇kleri̇ Ve Sorunlari

Korkanç¹

2020

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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tarafından yaptırılmıştır. Bazı onarımlar görerek günümüze kadar gelen medrese, orijinal durumunun muhafaza etmekte olup, dönem medrese yapıları arasında en önemlilerinden birisidir. Yapı, Cumhuriyet döneminden itibaren farklı amaçlar için kullanılmaktadır (okul, müze deposu, kütüphane vb.). Bu tür yapıların korunması ve gelecek nesillere aktarılması için bakımlarının düzenli bir şekilde yapılması gerekmektedir. Bu çalışmada yapıda kullanılan taşların jeomekanik özellikleri ve sorunlarının belirlenmesi amaçlanmış olup, alınan üç örnek üzerinde taşların karakteristik özellikleri belirlenmiştir. Yapıda temel seviyesine yakın kesimlerdeki yapı taşlarında zemin suyuna bağlı olarak önemli oranda bozunmalar gözlenmiştir. Anıtta restorasyon aşamasında gerçekleştirilen drenaj uygulamasından sonra da anıtın bazı kesimlerde zemin suyu ile ilişkili olarak renklenme, çiçeklenme ve taşın dayanımın azalması sonucunda yüzeysel ve bazı kesimlerde oldukça önemli miktarda taş kayıpları gözlenmiştir. Restorasyon uygulamalarında yörenin orijinal taşının kullanılmadığı belirlenmiş olup, yerine kullanılan restorasyon taşların özellikle kapiler bölgede bozunma sürecini hızlandırdığı belirlenmiştir.

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The effects of freeze–thaw (F–T) cycles on the Gödene travertine used in historical structures in Konya (Turkey)

Cited by 37 publications

References 27 publications

Freeze-thaw durability of repair mortars and porous limestone: compatibility issues

Freeze-thaw durability of repair mortars and porous limestone: compatibility issues

The Determination of Deteriorations on the Mısırlıoğlu Bridge (Konya, Turkey) by Non-Destructive Techniques (NDT)

Ak Medreseni̇n (Ni̇ğde) Yapiminda Kullanilan Taşlarin Mühendi̇sli̇k Özelli̇kleri̇ Ve Sorunlari

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