Abstract
Cement production consumes large energy in the baking and crushing processes, which causes large CO2 emission. It is possible to use fly ash and blast furnace slag as raw materials for the production of cement. Production of fly ash cement and blast furnace cement can reduce the consumption of limestone and energy, and reduce CO2 emissions. In this research, a planning model for recycling by-products considering transportation impact is developed for evaluating environmental impact caused by increasing of blended cement. This model is implemented in a planning support prototype system using a geographic information system (GIS) and an optimization software. Furthermore, this study shows the impact of environmental tax on the production of blended cement.
