This study analyzed construction embodied greenhouse gas emissions (EG) using input-output tables and CO2 emission data obtained from 40 countries. The analysis used input-output tables of 35 sectors, provided in the World Input-Output Database, which was published in the EU. An analysis demonstrated that the percentage of construction EG was high in developing countries, including China and India, and marginal in developed countries, including the United States and European countries. Based on the composition of construction EG, CO2 emissions from cement production, steel and other metal production, as well as energy supply sources have a significant impact.
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