| 摘要: |
| 采用正交试验对硅灰氧化铝地质聚合物进行了力学性能试验研究.结果表明：影响硅灰氧化铝地质聚合物强度的因素依次为碱激发剂浓度、硅铝比（n（SiO2）/n（Al2O3））、碱激发剂种类.配制硅灰氧化铝地质聚合物的碱激发剂为KOH，其最佳浓度为3.0mol/L，硅铝比为4.当KOH浓度为3.6mol/L，硅铝比为4时，硅灰氧化铝地质聚合物的抗折强度可达7.17MPa，抗压强度可达17.15MPa. |
| 关键词: 硅灰氧化铝地质聚合物 力学性能 碱激发剂 KOH |
| DOI：10.3969/j.issn.1007 9629.2017.02.023 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（51408487）；中国住建部科学技术基金资助项目（2014 K2 037）；中国博士后科学基金资助项目（2014M562437）；陕西省自然科学基金资助项目（2014JQ7292）；陕西省教育厅专项科学研究计划资助项目（14JK1516）；陕西省住房城乡建设科技计划项目（2016 K89）；陕西省博士后科研基金资助项目；西安市建设科技研究项目（SJW2015 09）；西安理工大学科学研究计划资助项目（118 211403） |
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| Mechanical Properties of Silica Fume Aluminum Oxide Geopolymer |
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ZHANG Haobo, ZHENG Zhigui, KOU Jialiang
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School of Civil Engineering and Architecture, Xian University of Technology, Xian 710048, China
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| Abstract: |
| Silica fume aluminum oxide geopolymer was prepared and its mechanical properties were investigated through orthogonal test. Results show that the properties of geopolymer are determined by the concentration of alkali activator， the molar ratio between silicon and aluminum and the type of alkali activator. It is recommended that the concentration of alkali activator is 3.0 mol/L， the ratio between silicon and aluminum is n（SiO2）/n（Al2O3）=4， and the best suitable alkali activator is potassium hydroxide. It is observed that flexural strength and compressive strength of geopolymer are 7.17 MPa and 17.15 MPa respectively when the concentration of potassium hydroxide is 3.6 mol/L. |
| Key words: silica fume aluminum oxide geopolymer mechanical property alkali activator potassium hydroxide |
