【摘 要】
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Calcium sulphoaluminate cement (CSA) are considered one of the possible and eco-friendly alternative to Ordinary Portland Cements (OPC) for mortar and concrete applications, thanks to the rapid-harden
【机 构】
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CTG S.p.A., Bergamo 24126, Italy
【出 处】
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The 14th International Congress on the Chemistry of Cement (
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Calcium sulphoaluminate cement (CSA) are considered one of the possible and eco-friendly alternative to Ordinary Portland Cements (OPC) for mortar and concrete applications, thanks to the rapid-hardening and shrinkage compensating behaviour coupled with the lower environmental impact.A modern mix design normally includes admixtures that, being designed for OPC applications, may in some cases lead to undesirable interactions with CSA.In this study, the admixture-CSA interaction issue was investigated by in-situ XRD and heat flow calorimetry on paste, and the results correlated with compressive strenght development on mortar.It was found a satisfactory agreement between some key paramenters such as ettringite development and anhydrite consumption trends observed by XRD, the heat flow and the physical characteristics like rheology at fresh state and compressive strength development in all the performed tests.
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