Mustafa Korkanç

Determination of deterioration of the main facade of the Ferit Paşa Cistern by non-destructive techniques (Konya, Turkey)

Building stones have long been one of the most widely used construction materials in the world. Building stones used in historical monuments are deteriorated partly or completely depending on the environmental and atmospheric effects. In recent years, non-destructive test methods have been used to assess deterioration of building stones used in historical monuments. Gödene stone is one of the building stones being widely used in the historical buildings in the Konya region, Central Anatolia. The most deterioration effects are observed in the Ferit Paşa Cistern among the historical structures built with Gödene stone in the region. The aim of this study is to assess the deteriorating effects in the street façade of the Ferit Paşa Cistern via non-destructive testing methods (Schmidt hardness rebound value, P-wave velocity, humidity measurement and thermal imaging) and create maps of deteriorated features. Turkey’s historic places are integrated to Turkish culture, efforts are made to conserve heritage through rehabilitation. Therefore, this study will help developers and federal managers during the project planning stage by providing technical data.

Evaluating the deterioration effects of building stones using NDT: the Küçükköy Church, Cappadocia Region, central Turkey

Many churches have been constructed during the last two millennia in the Cappadocia region of Central Anatolia. Among these buildings, the Küçükköy Church, constructed in 1834, is distinguishable from other churches by its icons and distinctive roof. However, this monument is in a state of rapid deterioration due to its derelict status, local atmospheric conditions, and the geological characteristics of the stones used in the structure. It is therefore important to determine deterioration status and the amount of deterioration of each building stone to facilitate the sustainable preservation of this monument. In recent years, non-destructive tests (NDT) have been commonly used to evaluate the detrioration status of such historic buildings. In the study reported here, we conducted laboratory studies on stone samples and performed in situ NDT (P-wave velocity test, Schmidt hammer rebound [SHR] test, and surface moisture measurement test) to determine the deterioration status of building stones used in the Küçükköy Church. The lithological characteristics of building stones are known to be the most important parameters in the deterioration process. We found that the deterioration effects were most advanced in those building stones which had properties similar to one type of andesite, as demonstrated by high voids and low P-wave velocity and SHR values. The benefits of NDT is that they are repeatable and that reliable results are obtained rapidly and economically.