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6C - LCA and Economics: Input/Output Analysis (TU2/7) Dynamic effects of acceptance of waste in construction industry: analysis by dynamic extension of waste input-output model. YOKOYAMA, Kazuyo1, 1 Waseda University, Shinjuku-ku, Tokyo, JAPAN ABSTRACT- Construction industry uses the large amounts of resources for production and consumes the large amounts of landfill for disposal. On the other hand, the industry has played an important role as a receptor and recycler of much waste. The accumulation of capital goods means the accumulation of waste. Therefore, it is necessary to consider about material flow from demolished durables which waste materials composed. Waste Input-Output table (WIO) (Nakamura(2000)) is an analytical representation of the interdependence between goods production, waste emission, and waste management. However, a static model like WIO is unsuitable for the analysis of durables with several years of life. In this study, I show a dynamic extension of WIO and evaluate the effects on the economy and environment which durables bring about. This model mainly follows WIO. The difference from Static WIO is consideration of capital accumulation. The conventional fixed capital matrix is considered only about production sectors. Therefore, it is necessary to extend the conventional fixed capital matrix, Key words: Dynamics, Waste Input Output Analysis, capital accumulation |
:=[K0t,Kzt]. K0t refers to the accumulation of capital goods to industrial section; Kzt refers to the accumulation of waste material to industrial section at t period. Next, waste conversion matrix is defined as follows. T:=[T0,Tz] . T0 refers to the proportion of waste generated from demolished durables. Tz refers to the proportion of wastes recovered from waste material consisting durables. Waste generated from each industry W0t is as follows. W0t=
Xt+T B 
t-1,t [Xt-Xt-1]+T B