Research Progress of Low-carbon Binders

C ement is an essential building material for society’s infrastructure around the world. However,the cement industry is responsible for an unacceptable increase in CO2 emissions. To mitigate these emissions,several approaches have been proposed,including improving energy efficiency,using alternative raw materials and / or alternative fuels,utilizing CCUS technology and developing low-carbon binders. In the long term,low-carbon binders are expected to play an important role in CO2 emission reduction of the cement industry. In this review,we summarize the research progress on four types of low carbon binders,viz. low clinker cements,low calcium cements,carbon fixation cements and alkali activated binders,introduce the preparation methods and properties of low-carbon binders,compare and analyze CO2 emissions of traditional Portland cement and low-carbon binders. Finally,we point out the issues on the development of low-carbon binders,and put forward proposals on their further research. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.