| Project/Area Number |
11558009
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Cultural property science
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| Research Institution | NATIONAL RESEARCH INSTITUTE FOR CULTURAL PROPERTIES, TOKYO (2001)
National Research Institute for Cultural Properties, Tokyo (1999-2000) |
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Principal Investigator |
ISHIZAKI Takeshi National Reseach Institute of Cultural Properties, Tokyo, Head of Physics Section, 保存科学部・物理研究室, 室長 (80212877)
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| Co-Investigator(Kenkyū-buntansha) |
KAWANOBE Wataru National Reseach Institute of Cultural Properties, Tokyo, Head of Restoraton Materials Science Section, 修復技術部, 室長 (00169749)
AOKI Shigeo National Reseach Institute of Cultural Properties, Tokyo, Director of Department of Restoration Techniques, 修復技術部, 室長 (60088797)
MIURA Sadatoshi National Reseach Institute of Cultural Properties, Tokyo, Department of Conservation Science, 保存科学部, 部長 (50099925)
小林 幸雄 北海道開拓記念館, 学芸主査(研究職) (10113466)
土谷 富士夫 帯広畜産大学, 畜産学部, 教授 (30003130)
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| Project Period (FY) |
1999 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 2001: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2000: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | stone monument / brick building / frost damage / frost heave / ice segregation / frost heave apparatus / earthen well |
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| Research Abstract |
(1) The meteorological bservation was carried out around historical buildings in Historical Village of Hokkaido. Temperature of wall surface was measured by temperature sensors and IR sensor. Volumetric water content of the wall was also observed. These observation revealed the relationship between the damaged part and the environmental conditions. It was also clarified that the south wall damaged severely due to the high frequency of freeze and thaw cycles.
(2) The meteorological observation was carried out around historical earthen wall of Morioka City. The main cause of deterioration of earthen wall was investigated by the measurement of water content profile and temperature profile. It was revealed that the cause of high deterioration at the lower part of earthen wall was due to the high water content. Laboratory experiments were carried out to clarify the relationship between the frost deterioration and the volumetric water content of the soil sample.
(3) Relationships between the electrical resistivity and water content of soil and brick were studied. It is shown that the electrical sounding method is applicable for the measurement of water content of earthen wall and brick wall. Since the electrical sounding method is non-destructive technique, it is quite promising method for investigating cultural properties.
(4) In order to build up standard experimental method to evaluate the frost susceptibility of the porous material, frost heave test apparatus was made. The experimental results showed that the frost heave rate is proportional to the temperature gradient in the partially frozen zone. Therefore it is necessary to obtain the temperature gradient in the frozen zone when comparing the frost susceptibility of porous materials.
(5) We proposed the protective measures for the historical earthen wall in Morioka City.
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