New generation grinding aids to reduce CO2 emissions during Portland cement manufacturing

C.A. Issa, J.J. Assaad
Lebanese American University, US

Keywords: CO2 emissions, cement, grinding aids


The manufacturing of Portland cement is considered among the most energy intensive and polluting processes, coming right after the aluminum and steel industries. Cement production consumes around 4 GJ of energy per ton and releases around 1 ton of carbon dioxide (CO2) in the atmosphere for each ton of material produced. With today’s concerns on sustainability and efficiency, a growing need has urged to develop new generation grinding aids (GA) that can be used during cement production to significantly reduce CO2 emissions and minimize clinker factor while maintaining adequate mechanical properties. This paper is part of a research program undertaken jointly by an academic institution and industrial companies to develop and launch new generation GA fulfilling such requirements.