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人们现在常用的硅酸盐水泥(国际上也称:波特兰水泥),根据国际能源机构预计,每加工生产一吨波特兰水泥会排入0.83吨二氧化碳,当它最终与水混合用于建筑时,每吨水泥则能在使用过程中吸收0.4吨二氧化碳(编辑注:应是指混凝土的碳化过程),因此每吨波特兰水泥的“碳足迹”约为0.4吨。这种传统水泥被视为导致全球气候变暖的“杀手”之一,每年生产水泥排出的温室气体,甚至超过全球整个航空业的排放量。
The portland cement commonly used today (also known internationally as Portland cement), according to the International Energy Agency, expects to generate 0.83 tonne of carbon dioxide per tonne of Portland cement produced when it is processed, when it is eventually mixed with water Per tonne of cement absorbs 0.4 tons of carbon dioxide per unit of construction during construction, so the “carbon footprint” per tonne of Portland cement is about 0.4 tons. This traditional cement is seen as one of the “killers” that cause global warming, producing more cement annually than the entire global aviation industry emits.