Miao et al. (2025): Biochar-zeolite modified super sulphate cement as a high-performance, sustainable and high-efficiency CO₂ sequestration cementitious material
Jianxiong Miao, Shuai Xiao, Yang Zhou, Wentao Chen, Yanji Jin, Luqing Cheng, Cheng Chang, Hao Zhang, IN: Construction and Building Materials, https://doi.org/10.1016/j.conbuildmat.2025.142475
Cement production contributes 8 % of global industrial carbon emissions, underscoring the urgent need for innovative strategies to mitigate its environmental impact. Super Sulfated Cement (SSC) is a promising low-carbon alternative, but its carbon sequestration potential remains underexplored. This study integrates biochar and zeolite into SSC to create a near-zero-carbon, high-performance composite with hierarchical transport pathways, enhancing compressive and flexural strength by 63.1 % and 43.8 %. A comprehensive mechanism for the composite’s carbon sequestration is proposed, leveraging biochar’s tunnel-like channels and zeolite’s nano-pores, along with molecular sieve properties, to create a hierarchical pore structure.
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