| 摘要: |
| 以水玻璃(WG)和氢氧化钠(NH)为碱组分配制碱矿渣水泥石（AASS），采用氮吸附方法分析了这两种碱矿渣水泥石碳化前后的孔结构，并与硅酸盐水泥石（PC）作对比.结果表明：碳化前，以水玻璃为碱组分的矿渣水泥石比表面积最大，平均孔径最小，累积孔体积最大，最可几孔径最小；以氢氧化钠为碱组分的碱矿渣水泥石比表面积最小，平均孔径最大，累积孔体积最小，最可几孔径最大；而硅酸盐水泥石的比表面积、平均孔径、累积孔体积及最可几孔径均介于上述两者之间.碳化后，上述3种水泥石平均孔径、最可几孔径均减小；碱矿渣水泥石比表面积增大，硅酸盐水泥石比表面积减小. |
| 关键词: 碱矿渣水泥石 碳化 孔结构 |
| DOI：10.3969/j.issn.1007 9629.2013.05.024 |
| 分类号: |
| 基金项目:陕西省教育厅自然科学专项项目（2013JK0923）；陕西省自然科学基金资助项目（2013JQ6011） |
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| Influence of Carbonation on Pore Structure of Alkali ActivatedSlag Cement Stone |
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HE Juan1, YANG Chang hui2, HE Ting shu3
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1.Post doctoral Mobile Stations of Materials Science and Engineering, Xian University of Architecture & Technology,Xian 710055, China;2.College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;3.College of Materials and Mineral Resources, Xian University of Architecture & Technology,Xian 710055, China
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| Abstract: |
| Water glass(WG) and sodium hydroxide(NH) were selected as alkali activator to prepare alkali activated slag cement stone(AASS), and nitrogen adsorption method was adopted to examine the pore structure of cement stone before and after carbonation. The results show that before carbonation, the specific surface area and cumulative pore volume of AASS activated by water glass are the biggest, and the average pore diameter and the most probable pore diameter of that are the smallest. While in the AASS activated with NaOH, the situation is opposite. Those parameters of Portland cement stone is found between the two. Carbonation reduces the average pore diameter and the most probable pore diameter of all cement stone. However, after carbonation, the specific surface area of AASS increases, and that of Portland cement stone decreases. |
| Key words: alkali activated slag cement stone(AASS) carbonation pore structure |
