Abstract
In this study, we assessed environmental impact related to cement industry, concrete industry and several industries using limestone by Material Flow Analysis. Especially, cement industry and concrete industry were assessed by Material Flow Accounting, and calcium was assessed which is principal ingredient of limestone by Material Balance Analysis. The obtained results are: Firstly, environmental impact index (DMI, HMF, TMR) related to cement industry and concrete industry was calculated from 1990 to 1994 by Material Flow Accounting. From these index, direct inputs of natural resources to each industry were found and potential of environmental impact that was caused by producing action of each industries could be assessed. Secondly, limestone flow both direct input and indirect input to cement industry and concrete industry was obtained in 1994. From this flow, utilization and consumption of limestone was found, and total evaluation of effective use of limestone was possible. Furthermore, we verified material flow analysis from the obtained result.
