Ceramics-Silikáty |
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CARBON EMISSION REDUCTION AND MECHANICAL PROPERTIES ENHANCEMENT IN STEAM-CURED SUPERSULFATED CEMENT WITH FLY ASH BASED ON MACHINE LEARNING OPTIMIZATION
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Liu Binbin 1, Wang Zheng 2, Geng Chaohui 1, Yu Mingyang 1, Sun Guilong 1, Mu Minghao 2, Liu Xinqiang 2, Liang Fei 3, Chen Heng 1
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1 Shandong Provincial Key Laboratory of Green and Intelligent Building Materials, University of Jinan, Jinan, 250022, China
2 Innovation Research Institute, Shandong High-Speed Group, Jinan, 276000, China
3 Shandong Water Investment Co., Ltd., Jinan, 250100, China
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Keywords: Supersulfated cement, Fly ash substitution, Regression model, Carbon footprint, Mechanical-environmental synergy
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Supersulfated cement (SSC), a binder with significantly low carbon emissions, exhibits excellent chemical resistance and considerable potential for marine engineering and other infrastructure applications. However, its intrinsic low early-age strength deficit has limited its broader adoption. This study proposes an innovative solution to this limitation by synergistically applying chemical activation (calcium formate) and thermal activation (steam curing at 50 °C). It also contributes, through the development of a support vector regression (SVR) model, to jointly optimizing compressive strength and carbon footprint, as experimentally validated. The results show that the dual-activation blend containing 20% fly ash (FA) reduces CO₂ emissions by 29.4% (8.5 kg CO₂/100 kg) compared to conventional SSC, while achieving a 7-day strength of 63.6 MPa. This leads to an outstanding eco-mechanical index of 0.89 kg CO₂/(MPa·100 kg). By integrating chemical activation, thermal curing, and multi-objective machine learning, this study provides a promising route to advance SSC's potential as a low-carbon, high-performance infrastructure material. |
doi: 10.13168/cs.2026.0022
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