| Title |
Analysis of Material Properties of Mortars used in Building Sites of the Joseon Dynasty |
| Authors |
김은경(Kim, Eun-Kyung) ; 강산하(Kang, San-Ha) ; 강소영(Kang, So-Yeong) |
| DOI |
https://doi.org/10.5659/JAIK.2020.36.12.151 |
| Keywords |
Joseon dynasty; Lime; Calcite; Mortars; Organic additives |
| Abstract |
This study investigated the material properties of mortars used in the construction materials of historical buildings during the Joseon Dynasty.
Their mineral composition, chemical composition and physical properties were analyzed using polarizing microscope, X-ray diffraction (XRD),
Fourier transform infrared spectrometry (FTIR), thermo gravimetric-differential scanning calorimetry (TG-DSC), X-ray fluorescence spectrometry
(XRF) and mercury intrusion porosimetry (MIP). Calcite was determined to be the main constituent mineral with soil minerals such as quartz,
feldspar, and mica, indicating the mortars were manufactured using hydrated lime mixed with soil minerals. There were no differences in
constituent minerals among the excavation sites or uses, but the chemical compositions could be classified into groups that appeared similar
to each other. The samples showed various pore size distributions with in a range, which indicates that the minerals had various particle
sizes. In addition, rice straws were identified, which is thought to reinforce the mortars against shrinkage or cracking. |