Analytical Investigation of the Joint Materials Sampled from Takanawa Chikutei Site
Year: 2023
Type: article
Abstract: After a part of stone walls was discovered during the construction of Takanawa Gateway station in 2019, the Takanawa Chikutei (embankment) was unearthed by the excavation in 2020. When the first Japanese railway was constructed at the beginning of the Meiji era, most of the materials necessary for the construction were imported from England, but stones and sediment for the foundation of bridges and embankments are considered to have been supplied within Japan. To understand the history of Japanese construction work, it is interesting to compare the composition of the joint material used at Takanawa Chikutei with that of joint materials made with conventional technology, and with artificial stones developed later in the Meiji era. In order to obtain indirect evidence of the use of slaked lime mixture and to calculate its composition ratio, the joint materials sampled from Takanawa Chikutei were analyzed by X-ray diffraction analysis and X-ray fluorescence analysis. As a result of the X-ray diffraction analysis, calcite was identified in 9 of 14 samples, providing the indirect evidence of the use of slaked lime mixture in the joint materials at Takanawa Chikutei. The composition ratio obtained by X-ray fluorescence analysis indicates that the content ratio of slaked lime in the joint materials at Takanawa Chikutei might be higher than that of artificial stones developed later in the Meiji era.
DOI: 10.18953/00009213
Authors: 犬塚, 将英, 高橋, 佳久, 紀, 芝蓮, 中山, 俊介, 中村, 舞, 建石, 徹, 鈴木, 美和, 斉藤, 進, 天野, 武弘, Inuzuka, Masahide, Takahasi, Yoshihisa, Chi, Chih lien, Nakayama, Shunsuke, Tateishi, Toru
Language: Japanese
Subfield: Archeology (arts and humanities)
Field: Arts and Humanities
Domain: Social Sciences
Open Access status: green
OpenAlex ID: W7207870035