Foam stabilizer plays a crucial role in foamed concrete production as it alleviates the foams to attain satisfactory pore structure. This paper studies the feasibility of using CO₂ as a foam stabilizer by investigating the foams and pore structure development over time and the properties of the resulting foamed concrete. Experimental results revealed that the formation of extensive nano-CaCO₃ acted as “skeletons” in foamed concrete, which could help mitigate the disproportionation and coalescence reaction of the foams. As such, the matrix also had an optimized pore structure with small and homogeneous pores, leading to an improved stress transfer path. Consequently, the compressive strength of the CO₂-stabilized foamed concrete can be two times higher than that of the foamed concrete without CO₂ stabilization, while maintaining a similar or even slightly lower density. From the environmental and economic perspectives, CO₂-stabilized foamed concrete mineralized about 8.55 wt% of CO₂ and mitigated the greenhouse effect.

泡沫稳定剂在泡沫混凝土生产中起着至关重要的作用，因为它可以减轻泡沫以获得令人满意的孔隙结构。本文通过研究泡沫和孔隙结构随时间的发展以及所得泡沫混凝土的性能，研究了_{使用CO 2作为泡沫稳定剂的可行性。实验结果表明，大量纳米CaCO 3}的形成在泡沫混凝土中起到了“骨架”的作用，有助于减轻泡沫的歧化和聚结反应。因此，该基体还具有优化的孔隙结构，孔隙小且均匀，从而改善了应力传递路径。_{因此，CO 2稳定的泡沫混凝土}的抗压强度可以比没有CO ₂稳定的泡沫混凝土高两倍，同时保持相似或什至稍低的密度。从环境和经济角度来看，CO ₂稳定泡沫混凝土矿化了约8.55wt%的CO ₂，​​减轻了温室效应。