Emisyjność głównych materiałów budowlanych – co przyniesie przyszłość. (Emissions of major building materials – What brings the future?)

Abstract

Industry accounts for almost 40% of global energy consumption and almost a quarter of direct CO2 emissions. Steel, cement and aluminium production alone represents 12% of global energy consumption and 13% of global CO2 emissions. By keeping emissions at the current level, we will use the remaining 2050 carbon budget in 12 years. In order to reduce carbon dioxide (CO2) emissions and thereby stop the global warming process, the International Energy Agency (IEA) has proposed scenarios that can lead to the reduction of emissions by 2060: for steel by 70%, for cement – by 20%, and for aluminium – by 30 even under the assumption of a rapid increase in demand for these materials. The IEA assumes a decrease in global CO2 emissions in the energy sector by almost 75%, inter alia by a reduction of materials consumption and an improvement in the use of materials in final products, including the construction sector. This article presents developed scenarios, includes their explanations and brings more in-depth analysis.