Читать книгу Monument Future - Siegfried Siegesmund - Страница 310

This study conducted not only prior research including historical and archeological studies but also an overall conservation scientific survey of the Stone Standing Buddha and Stone Chamber.

We analyzed the petrological characteristics of the constituent rocks by observing the microscope and measuring the magnetic susceptibility and so on. Samples collected from the dismantled stone walls and the surrounding sites were examined using stereoscopic and polarizing microscopes, and X-ray diffraction analysis, and the geochemical properties were also examined using ICP-AES, ICP-MS, and INAA. The chromaticity was also measured to check the quantitative color of the samples.

A deterioration map was prepared to evaluate the conservation status of the Stone Standing Buddha, and infrared thermography analysis was performed to detect the damaged zones that are not easily detectable with the naked eyes (Jo and Lee, 2014), and the P-XRF was performed to analyze surface contaminants. Besides, to evaluate the material properties, the degree of weathering and internal defects of the Stone Standing Buddha and Stone Chamber, ultrasonic velocity was conducted (Lee et al., 2017). By comparing P-wave pulse velocities measured by the indirect method in the masonry before dismantling and those of the Stone Standing Buddha, the degree of weathering in physical properties both were considered. Quantitative stages of weathering were calculated based on the coefficient of weathering (K) proposed by Iliev (1966). K value is defined as the rate of change in the ultrasonic velocity of fresh and weathered rock.