Hashimoto,S., Tanikawa,H. and Moriguchi,Y.(2009): Framework for estimating potential wastes and secondary resources accumulated within an economy - A case study of construction minerals in Japan. Waste Management, 29, 2859-2866.

『利用可能な廃棄物と経済的に集積された二次資源を見積るための枠組み−日本における建築用鉱物資源の事例』

『Abstract
　Material stocks in economic society are considered to represent a reserve for wastes and secondary resources. From the viewpoints of proper disposal and reutilization of stocked materials, accurate estimation of the amount of materials that will emerge as wastes or secondary resources in the future is important. We defined materials that have a high probability of emerging as wastes or secondary resources as “potential wastes and secondary resources” and estimated that amount for construction minerals in Japan as a case study. The following conclusions were drawn. (1) We classified materials that are input into economic society into four categories: potential wastes and secondary resources, potential dissipated materials, dissipatively used materials, and permanent structures. By clarifying the latter three non-potential wastes and secondary resources, we performed a more accurate assessment of the wastes and secondary resources that will emerge in the future. (2) The share of potential wastes and secondary resources was estimated to be about 30% of all construction materials that have been input into and accumulated in Japanese economic society. (3) Information related to potential dissipated materials and dissipatively used materials will provide fundamental knowledge to support analyses of the environmental impacts and resource losses which these materials might generate.』

1. Introduction
2. Estimation method of potential wastes and secondary resources
　2.1. Framework
　2.2. Estimation methods of demand for construction minerals and potential wastes and secondary resources
　2.3. Determination of ratios of potential wastes and secondary resources, potential dissipated materials, dissipatively used materials, and permanent structures
　2.4. Estimation methods of stocks and emergence of potential wastes and secondary resources
3. Estimation results and discussion
　3.1. Estimated demand for construction minerals by construction activity type
　3.2. Estimated potential wastes and secondary resources
　3.3. Estimated stocks and emergence of potential wastes and secondary resources
　3.4. Interpretation of potential dissipated materials and dissipatively used materials
4. Conclusion
Acknowledgements
Appendix A
References

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