| 碱激发剂对镍渣基地聚物砂浆力学性能的影响 |
| |
| 引用本文： | 蒋远,黄华炜,毛文宫,曾清意,许利惟.碱激发剂对镍渣基地聚物砂浆力学性能的影响[J].福建工程学院学报,2023,0(1):44-48. |
| |
| 作者姓名： | 蒋远 黄华炜 毛文宫 曾清意 许利惟 |
| |
| 作者单位： | 福建省土木工程新技术与信息化重点实验室 |
| |
| 基金项目： | 福建工程学院2022年国家级大学生创新创业训练计划项目(202210388024,202210388022)； |
| |
| 摘 要： | 以工业固废镍渣为原料，采用机械力化学制备单组分镍渣基地聚物。研究碱激发剂种类和碱掺量对镍渣基地聚物砂浆抗压强度的影响规律，结合XRD、SEM及EDS等试验对水化产物进行表征。结果表明：当碱激发剂为复掺Na2SiO3/Na2CO3,wNa2O=6.5%时，单组分镍渣基地聚物28 d抗压强度可达68.96 MPa。单掺NaOH对镍渣活性激发效果有限，单掺Na2SiO3和复掺Na2SiO3/Na2CO3激发效果显著，单掺Na2SiO3和复掺Na2SiO3/Na2CO3不能使地聚物的矿物组成发生较大改变，但可以显著提高反应体系中凝胶产物的生成量，改善地聚物微观结构的致密程度。
|
| 关 键 词： | 镍渣 地聚物 碱激发剂 力学性能 |
Effects of alkali activator on mechanical properties of nickel slag base geopolymer mortar |
| |
| JIANG Yuan,HUANG Huawei,MAO Wengong,ZENG Qingyi,XU Liwei.Effects of alkali activator on mechanical properties of nickel slag base geopolymer mortar[J].Journal of Fujian University of Technology,2023,0(1):44-48. |
| |
| Authors: | JIANG Yuan HUANG Huawei MAO Wengong ZENG Qingyi XU Liwei |
| |
| Affiliation: | Fujian Provincial Key Laboratory of Advanced Technology and Informatization in Civil Engineering, |
| |
| Abstract: | One part nickel slag base geopolymer was prepared by mechanochemistry using industrial solid waste nickel slag as the raw material. The effects of the type and content of alkali activator on the compressive strength of geopolymer mortar were studied. The hydration products were characterized by XRD, SEM and EDS. Test results show that when the alkali activator is Na2SiO3/Na2CO3 and the Na2O equivalent is 6.5%, the 28 day compressive strength of the one part nickel slag base geopolymer can reach 68.96 MPa. The single doping of NaOH has limited activation effect on the activity of nickel slag; the single doping of Na2SiO3 and co doping of Na2SiO3/Na2CO3 has better potential activity to activate nickel slag. The latter cannot change the mineral composition of geopolymer obviously, but it can significantly increase generation of gel in the reaction system and improve the densification of the geopolymer microstructures. |
| |
| Keywords: | nickel slag geopolymer alkali activator mechanical properties |
|
| 点击此处可从《福建工程学院学报》浏览原始摘要信息 |
|
点击此处可从《福建工程学院学报》下载全文 |
