INVESTIGATION OF CO2 EMISSIONS BASED ON ENERGY CONSUMPTION IN THE PRODUCTION OF AGGREGATE

摘要

This paper presents the methods of determination of the CO2 emissions (CO2-e) and energy consumptions in aggregate production. The aggregate composed approximately 70% volume of concrete that has widespread use as construction material in the world. One of the most important elements in today's terms is sustainable use of resources and minimum CO2 emissions (CO2 + CO + NOx + CH4.vb.) at every stage of production of aggregate. These elements must be taken into consideration in the aggregate production standards. The selection of aggregate production method is very important for the optimum use of energy and effects of greenhouse gas emissions. Within the scope of this study, the unit value of CO2-e that release during the production of aggregate in different formations is determining for a quarry in Turkey. Thus, the effects of greenhouse gas emission can be evaluated according to the characteristics of material in aggregate production planning. In this study, energies consumed during the production of aggregates in a quarry in Istanbul Cendere region were investigated by taking the different formations encountered at the quarry into consideration. The unit CO2 emission values per ton of produced aggregates were calculated as a result of this investigation. Besides, energy consumption values of previous months at this quarry were taken and the unit CO2 emission values were also calculated.