碱激发剂对粉煤灰地聚物混凝土的性能影响
TU528.04; 以偏高岭土、一级粉煤灰和矿渣为原料,选择LiOH为碱激发剂,制备了不同LiOH掺杂量(1％,3％,5％,7％(质量分数))的粉煤灰地聚物混凝土.研究了 LiOH掺杂量对粉煤灰地聚物混凝土力学性能和抗冻性能的影响.结果表明,掺入碱激发剂LiOH促进了地聚物混凝土中活性硅和活性铝发生反应,生成的凝胶数量增多,提高了混凝土的致密度;当LiOH的掺杂量为5％时,混凝土的抗压强度和抗折强度达到了最大值,分别为48.91和5.56 MPa;适量LiOH的添加提高了混凝土的热稳定性和抗冻性能,在950 ℃,当LiOH的掺杂量为5％时,混凝土的失重最低仅为3.9％;冻融循环100次时,Li...
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| Published in | 功能材料 Vol. 54; no. 11; pp. 11170 - 11176 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
呼伦贝尔学院建筑工程学院,内蒙古呼伦贝尔 021008
30.11.2023
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-9731 |
| DOI | 10.3969/j.issn.1001-9731.2023.11.022 |
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| Abstract | TU528.04; 以偏高岭土、一级粉煤灰和矿渣为原料,选择LiOH为碱激发剂,制备了不同LiOH掺杂量(1％,3％,5％,7％(质量分数))的粉煤灰地聚物混凝土.研究了 LiOH掺杂量对粉煤灰地聚物混凝土力学性能和抗冻性能的影响.结果表明,掺入碱激发剂LiOH促进了地聚物混凝土中活性硅和活性铝发生反应,生成的凝胶数量增多,提高了混凝土的致密度;当LiOH的掺杂量为5％时,混凝土的抗压强度和抗折强度达到了最大值,分别为48.91和5.56 MPa;适量LiOH的添加提高了混凝土的热稳定性和抗冻性能,在950 ℃,当LiOH的掺杂量为5％时,混凝土的失重最低仅为3.9％;冻融循环100次时,LiOH的掺杂量为5％的混凝土的质量损失率最低为0.93％,相对动弹性模量最大为88.24％,抗冻性能最佳.综合分析可知,LiOH的最佳掺杂量为5％. |
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| AbstractList | TU528.04; 以偏高岭土、一级粉煤灰和矿渣为原料,选择LiOH为碱激发剂,制备了不同LiOH掺杂量(1％,3％,5％,7％(质量分数))的粉煤灰地聚物混凝土.研究了 LiOH掺杂量对粉煤灰地聚物混凝土力学性能和抗冻性能的影响.结果表明,掺入碱激发剂LiOH促进了地聚物混凝土中活性硅和活性铝发生反应,生成的凝胶数量增多,提高了混凝土的致密度;当LiOH的掺杂量为5％时,混凝土的抗压强度和抗折强度达到了最大值,分别为48.91和5.56 MPa;适量LiOH的添加提高了混凝土的热稳定性和抗冻性能,在950 ℃,当LiOH的掺杂量为5％时,混凝土的失重最低仅为3.9％;冻融循环100次时,LiOH的掺杂量为5％的混凝土的质量损失率最低为0.93％,相对动弹性模量最大为88.24％,抗冻性能最佳.综合分析可知,LiOH的最佳掺杂量为5％. |
| Author | 方明伟 王丹 周枫桃 李荣杰 |
| AuthorAffiliation | 呼伦贝尔学院建筑工程学院,内蒙古呼伦贝尔 021008 |
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| Author_FL | WANG Dan FANG Mingwei LI Rongjie ZHOU Fengtao |
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| Issue | 11 |
| Keywords | geopolymer concrete 力学性能 frost resistance 粉煤灰 抗冻性能 地聚物 fly ash 碱激发剂 alkaline activator 混凝土 mechanical properties |
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| Snippet | TU528.04; 以偏高岭土、一级粉煤灰和矿渣为原料,选择LiOH为碱激发剂,制备了不同LiOH掺杂量(1％,3％,5％,7％(质量分数))的粉煤灰地聚物混凝土.研究了... |
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| Title | 碱激发剂对粉煤灰地聚物混凝土的性能影响 |
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