Zhang et al. (2026): Durability and CO₂ sequestration capacity of carbon sequestration foamed concrete under magnesium and sodium sulfate attacks
Xiang Zhang, Songyu Liu, Kai Wu, Zhenyang Yuan, Zengfeng and Guojun Cai, IN: Construction and Building Materials, https://doi.org/10.1016/j.conbuildmat.2026.145506
Carbon sequestration foamed concrete (CFC) is primarily composed of MgO, serpentine, silty clay, water and carbon dioxide (CO₂) foam. CFC has been extensively studied in previous literature for its exceptional performance in CO₂ sequestration. However, the lack of studies on the durability of CFC under sulfate attack remains a significant challenge for its large-scale application as a building material. This study investigated the durability and CO₂ sequestration of CFC under chemical sulfate attack by evaluating the changes in specimen volume, mass, phase identification and CO₂ sequestration capacity. The CFC specimens were exposed to magnesium sulfate (MgSO₄) and sodium sulfate (Na₂SO₄) solutions for 10, 20 and 30 days, respectively, after which a series of tests were conducted.