A New, Carbon-Negative Precipitated Calcium Carbonate Admixture (PCC-A) for Low Carbon Portland Cements

摘要: The production of Portland cement accounts for approximately 7% global anthropogenic CO2 emissions. Carbon CAPture and CONversion (CAPCON) technology under development by the authors allows new methods to be developed offset these Carbon-negative Precipitated Calcium Carbonate (PCC), produced from emissions, can used as a means offsetting carbon footprint while potentially providing benefits hydration, workability, durability strength. In this paper, we present preliminary test results obtained mechanical chemical properties class PCC blended cements. These initial findings have shown that cements behave differently commonly limestone cement, which been well documented improve workability rate hydration. strength incorporating carbon-negative Admixture (PCC-A) has found exceed reference baseline—Ordinary Cement (OPC). reduction clinker factor, when using PCC-A, observed increase in compressive associated member size reduce more than 25%.