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Title: Calcium Sulfoaluminate Cement Manufacturing in India— Prospects and Prognosis of Environmental Impacts

Author(s): Atul Sharma, Anusha S. Basavaraj, Piyush Chaunsali, and Ravindra Gettu

Publication: Materials Journal

Volume: 120

Issue: 1

Appears on pages(s): 17-28

Keywords: alternative raw materials; calcium sulfoaluminate (CSA) cement; carbon dioxide (CO2) emissions; energy consumption; life cycle assessment

DOI: 10.14359/51738456

Date: 1/1/2023

Calcium sulfoaluminate (CSA) cement is a low-CO2 binder exhibiting useful properties, such as shrinkage compensation and rapid hardening, which can be achieved by altering its phase composition. In this paper, a hypothetical scenario of CSA cement manufacturing at an existing Indian cement plant is investigated for the environmental consequences (that is, CO2 emissions and energy consumed) using the life cycle assessment methodology. Thirteen laboratory-scale studies from the literature were selected for potential upscaling to industrial level production. The analysis showed that the manufacturing of CSA clinker could result in a 15 to 55% reduction in the CO2 emissions without a significant change in energy consumption when compared to ordinary portland cement. The impacts of CSA cement manufacturing were comparable to those of blended cements, such as those with slag and fly ash.