How much cement can we do without? Lessons from cement material flows in the UK

摘要: Abstract Cement manufacture is responsible for 5–7% of world CO 2 emissions. primarily used in concrete, the most material on planet and a critical part any analysis emissions reduction strategy. To estimate potential reducing demand, this work analyses flow cement industry, using UK 2014 as case study. Combining published data, analytic assumptions, interviews we estimated from production to breakdown its use applications. Having broken down demand into 25 applications, multiple efficiency techniques were considered: substituting calcined clay limestone, content post-tensioning floor slabs, more precast building elements, construction waste, overdesign construction. We produce final total achievable efficiency: 51.3%. Due overlap interactions between methods, attribution carbon abatement depends sequence application. In analysis, have applied last, because it independent others, would require cultural change. show then that floors, repairs maintenance, concrete beams, applications within transport sector should be targeted. The substitution with limestone has biggest reduce (27%) . Reducing amount next highest (10%), followed by slabs (3%).