Abstract
The solution to the global warming is one of the most urgent global environmental problems. Energy consumption and carbon dioxides (CO2)caused by energy consumption are a primary factor of global warming. We examined the construction technology and its methods to reduce them.
Construction such as concrete and steel materials for building civil engineering structures discharge CO2when produced and transported. Construction machines discharge CO2when made and operated. Further, Fossil fuels discharge CO2when transported, refined and stored. In this paper, we calculated the amount of CO2emissions by construction methods of five typical public works (shields, concrete structures, dams, tunnels, earth-moving). In addition, comparing efficient alternative plans for construction technology, methods and materials with former ones, we grasped their effects quantitatively. Moreover, for laborious comparison of these methods, this paper also states the outline of simulation program which assesses CO2emissions and energy consumption accompanying public works by using personal computers instantly.
