The Sorting Process of Construction Wastes in Japan

Fujiki Hiroto

doi:10.11444/sisj.2016.77

This thesis takes into consideration information based on research that I conducted at a plant for the intermediate disposal of mixed construction wastes.<br>In the second section of this thesis, the impacts of changes in the construction industry on the sorting process of construction wastes are reviewed. Construction companies reduce the generation of mixed construction wastes by actively segregating construction wastes. This leads to an increase in the trade that enterprises engaged in the disposal of mixed construction wastes do with enterprises that dismantle buildings, which also seek to improve the sorting accuracy of construction wastes.<br>In the third section, the sorting process of mixed construction wastes is analyzed. Specifically, it looks at the cost of the re-disposal of sorted construction wastes, which is lower than the cost of the final disposal of construction wastes. Intermediate disposal enterprises actively sort mixed construction wastes to reduce their final disposal volume.<br>In the fourth section, factors that contribute to the development of the recycling of construction wastes are discussed. Recycling has improved the business environment for the recycling of construction wastes through the promotion of recycling policies, specifically since the market for construction wastes recycling has become functional. Because the more the intermediate disposal enterprises themselves sort mixed construction wastes, the more profits they earn, they work very hard to efficiently sort the mixed construction wastes. Each of the intermediate disposal enterprises’ activities contributes to improvements in the recycling ratio of construction waste.

The Sorting Process of Construction Wastes in Japan

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