| 摘要: |
| 采用X射线衍射、热重分析、核磁共振和压汞法，研究了饱和度对以水玻璃为激发剂的碱矿渣砂浆（ASm）抗碳化性能的影响.结果表明，随着饱和度的降低，水化硅（铝）酸钙（C-（A）-S-H）凝胶脱钙更严重，ASm总孔隙率增大，最可几孔径增加，碳化生成的亚稳态文石和球霰石增多，ASm抗碳化性能变差，抗压强度保留率降幅和碳化深度增幅降低. |
| 关键词: 碱矿渣砂浆 饱和度 C-(A)-S-H凝胶 抗碳化性能 |
| DOI：10.3969/j.issn.1007-9629.2024.11.011 |
| 分类号:TU526 |
| 基金项目:国家自然科学基金资助项目（52278248） |
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| Influence of Saturation Degree on Carbonization Resistance of Alkali-Activated Slag Mortar |
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LIAO Zimo1, XIAO Zerong2, ZHENG Xiangzeng3, JIANG Xuan1, JI Tao1
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1.College of Civil Engineering， Fuzhou University， Fuzhou 350108， China;2.Fuzhou Planning & Design Research Institute Group Co.， Ltd.， Fuzhou 350108， China;3.Transportation and Construction Bureau of Pingtan Comprehensive Experimental Zone， Pingtan305400， China
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| Abstract: |
| The influence of saturation degree on the carbonation resistance of alkali-activated slag mortar（ASm） with water glass as activator was studied by X-ray diffraction， thermogravimetric analysis， nuclear magnetic resonance， and mercury intrusion porosimetry. The results show that with the decreases of saturation degree， the decalcification of calcium alumino silicate hydrate（C-（A）-S-H） gel becomes more severe， the total porosity and the most probable pore size of ASm increase. The unstable aragonite and vaterite generated by carbonation increase with the decreases of the saturation degree， resulting in the deterioration of the carbonation resistance of ASm. With the decreases of saturation degree， the reduction in compressive strength retention rate and the increase in carbonation depth of ASm are decreased. |
| Key words: alkali-activated slag mortar saturation degree C-（A）-S-H gel carbonization resistance |
