Magnesium silicate hydrate cement (MSHC) is a potential low-carbon alternative to ordinary Portland cement (OPC), but its carbon emissions vary with raw materials and mix proportions. A probabilistic life cycle assessment (PLCA) and machine learning model (IMAGE)

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Magnesium silicate hydrate cement (MSHC) is a potential low-carbon alternative to ordinary Portland cement (OPC), but its carbon emissions vary with raw materials and mix proportions. A probabilistic life cycle assessment (PLCA) and machine learning model

Caption

Magnesium silicate hydrate cement (MSHC) is a potential low-carbon alternative to ordinary Portland cement (OPC), but its carbon emissions vary with raw materials and mix proportions. A probabilistic life cycle assessment (PLCA) and machine learning model reveal that MSHC's emissions range from 0.174 to 1.419 kg CO2e/kg, with the Mg/Si ratio being a critical factor. The study highlights that MSHC does not always guarantee lower emissions than OPC, emphasizing the importance of precise mix proportions.

Credit

Yue Li/ Beijing University of Technology, Xiao Luo/ Beijing University of Technology, Xiaolong Liu/ Beijing University of Technology, Zhijie Zhang/ Beijing University of Technology, Kun Meng/ Beijing University of Technology, Jinlei Mu/ Hebei University of Architecture

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