The Characteristics of Component of Lime Mortars with Perilla Oil

Abstract

A lime is a traditional material that has been used for a long time and has been used in ancient tumb, fortress walls, ondol, buildings, and lime-mortar barrier tombs. Based on the literature records used lime with additive materials, in this study, observed changes in the composition of perilla oil according to curing environment, sampling position, and time tor time mixed or applied with perilla oil among traditional lime additive materials by pyrosis gas chromatography mass spectrometery (Py-GC-MS) and Fourier Transform infrared spectroscopy(FT-IR) analysis. For perilla oil, unsaturated fatty acids such as oleic acid, and linoleic acid, saturated fatty acid, palmitic acid were identified as the main component, and as perilla oil was cured, the ratio of saturated fatty acids such as azelaic acid, palmitic acid, and stearic acid tended to increase. This trend has also been confirmed in lime mortars using perilla oil. In limes mixed with perilla oil, oleic acid is predominantly detected. In the case of lime coated with perilla oil, no characteristic component was identified in the internal sample, and a change in characteristic components were confirmed according to the indoor and outdoor environments on the coated surface. Palmitic acid, stearic acid, and oleic acid were detected as main components in a stable indoor environment, but azelaic acid, palmitic acid, and stearic acid were identified as main components as they were exposed to the climate environment(outdoor). In particular, it is characterized by the fact that it was detected only in mortar applied with azelaic acid. However the possibility of grasping perilla oil using FT-IR was expected to have a detection limit depending on the concentration of perilla oil. Such analysis results are expected to contribute to the discovery of lime additive materials used in cultural heritage and the research on construction technology in the future.