Artificial stone construction is a method developed by civil engineer HATTORI Choshichi in Japan. It uses a combination of mixed soil “Tataki” and building stones to provide strength and water resistance. There are artificial stone constructions which were build more than 100 years ago and some of them have been well preserved especially in central Japan. Many of them are designated as cultural properties. Some of them have been deteriorated now. It is needed to restore and preserve those historical structures. However, there are few documentations how to conduct the artificial stone construction and make the Tataki. Therefore, it is necessary to clarify the construction method for artificial stone construction. Tataki is a combination of soil, slaked lime, and water. The mixed soil “Tataki” specimens were prepared and unconfined compression tests have been conducted to research the best ratio of soil to slaked lime for strengthen Tataki. In addition, it was clarified that the strength of Tataki had been increased with curing time. In the mixed soil “Tataki”, artificial material is only the slaked lime Ca(OH)2, which can be made from natural limestone with low energy compare to modern Portland cement. Artificial stone construction is also better method for Sustainable Development Goals (SDGs).
Fujii et al. (Thu,) studied this question.