Restoration of Kodokan Stone Monument Damaged by the Great East Japan Earthquake

Abstract eng:
The Kodokan, opened in August 1841 as the Mito clan s school. The Kodokan stone monument is made of marble called Kansuiseki. The spirit of Kodokan is curved on the surface of the stone monument. The Great East Japan Earthquake of 9.0 magnitude occurred in March 11, 2011. The stone monument collapsed due to the ground movement of the earthquake. After this, The Agency for Cultural Affairs organized a committee of experts for the restoration project. First, the investigation was curried out to identify the cause of the damage. The following procedures were decided by the committee of experts for the restoration. The stone monument was strengthened by using stainless steel bolt, Aramid fiber and epoxy resin. The broken surface stones with inscription were returned to the original position and strengthened with inorganic adhesive. The restoration program was completed at fall in 2013.

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