| Abstract |
| This study investigated the potential of using carbond ioxide(CO₂)-dissolved nanobubble water as mixing water to enhance carbon-based compoundse questration in cementitious materials. Mortar specimens were prepared using four types of mixing water: generalwater, nanobubble water, CO₂-dissolved general water, and CO₂-dissolved nanobubble water. Thermogravimetric analysis and compressive strength tests were conducted to evaluate the physicochemical and mechanical properties of the specimens. The results indicated that specimens prepared with CO₂-dissolved nanobubble water exhibited the lowest calcium hydroxide content and the highest calcium carbonate content. Additionally, these specimens achieved the highest compressive strength, demonstrating an increase of 24.06% compared to those prepared using general water. These findings suggest that CO₂introduced during the mixing process reacts with calcium hydroxide, thereby promoting the formation of calcium carbonate, which fills the pores and results in a denser microstructure. The enhanced microstructural densification is considered a key contributor to the observed improvement in mechanical performance. Overall, the use of CO₂-dissolved nanobubble water as mixing water is a promising and environmentally sustainable strategy for simultaneously enhancing CO₂sequestration and improving the mechanical performance of cement-based materials. |
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| Key Words |
| 탄산화 반응, 이산화탄소 수중 용해, 배합수, 모르타르, 나노버블, Carbonation reaction, Dissolution of carbon dioxide in water, Mixing water, Mortar, Nanobubble |
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