TIME-SERIES ESTIMATION OF THE MATERIAL STOCK OF BUILDINGS AND INFRASTRUCTURE OF ALL PREFECTURES IN JAPAN

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  • 都道府県における建築物・社会基盤施設の経年マテリアルストック推計に関する研究

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 Various policies have been undertaken in Japan for the establishment of a sustainable society. A vast amount of infrastructure in Japan was constructed during the rapid economic growth era, and due to its life span, most of this infrastructure would have to be repaired or demolished in the near future. It is urgently needed to determine the spatial distribution and accumulation of this material stock. This study examined the spatial distribution and transition of material stock in each prefecture using statistical and GIS data. The results show that material stock in 1965 (approx 7.2 billion tons) increased by about three times in 2010 (approx 20.6 billion tons). When comparing structure-types, buildings and roads compose the largest percentage of material stock, while in a material-types comparison, concrete and aggregate are the largest percentage.

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