文档名：不同活化方式锂渣地聚物性能研究
摘要：为揭示不同活化方式锂渣制备碱激发地聚合物可行性,对比分析了未活化、微波活化和热活化锂渣基地聚合物物理力学性能.结果表明,热活化和微波活化可以显著提高锂渣活性,增强锂渣基地聚合物放热速率和放热量,且热活化锂渣活性高于微波活化锂渣.掺2%NaOH和4%Na2SiO3时地聚物放热速率和放热量最佳,在Na2SiO3掺量相同的情况下,NaOH掺量过多会导致放热速率减慢,累计放热量降低.热活化和微波活化可以显著提高锂渣基地聚合物的抗压强度.掺加2%NaOH和4%Na2SiO3时,微波活化锂渣基地聚合物3d抗压强度最高,较未活化锂渣基地聚合物增加9.3%.热活化锂渣基地聚合物28d抗压强度最高,较未活化锂渣基地聚合物增加18.69%.掺加4%NaOH和4%Na2SiO3时,热活化锂渣基地聚合物3d抗压强度最高,较未活化锂渣基地聚合物增加23.75%.微波活化锂渣基地聚合物28d抗压强度最高,较未活化锂渣基地聚合物增加9.73%.热活化和微波活化活性增强,锂渣地聚合物碱激发反应生成的钙矾石、水化硅铝酸钙或硅铝酸钠((N)C-A-S-H)凝胶等含量高于原始锂渣地聚物,在Na2SiO3掺量相同的情况下,锂渣基地聚合物的活性随NaOH掺量的增加而降低.
Abstract：Torevealthefeasibilityofpreparingalkaliactivatedgeogeopolymerusingdifferentactivationmethodsoflithiumslag,thehydrationperformancesofnonactivated,microwaveactivated,andthermallyactivatedlithiumslagbasedgeopolymerwerecomparedandanalyzed.Theresultsshowthatthermalactivationandmicrowaveactivationcansignificantlyimprovetheactivityoflithiumslag,enhancethehydrationheatandheatreleaseoflithiumslagbasedgeopolymer,andtheactivityofthermalactivatedlithiumslagishigherthanthatofmicrowaveactivatedlithiumslag.When2%NaOHand4%Na2SiO3areadded,thehydrationheatandheatreleaseofthegeopolymerarethebest.WhenthecontentofNa2SiO3isthesame,excessiveNaOHadditionwillslowdownthehydrationheatreleaserateandreducetheaccumulatedheat.Thermalactivationandmicrowaveactivationcansignificantlyimprovethecompressivestrengthoflithiumslagbasedgeopolymer.When2%NaOHand4%Na2SiO3areadded,the3dcompressivestrengthofthemicrowaveactivatedlithiumslagbasedpolymeristhehighest,increasingby9.3%comparedtothenon-activatedlithiumslagbasedpolymer.Thecompressivestrengthofthermallyactivatedlithiumslagbasedgeopolymeristhehighestat28d,whichis18.69%higherthanthatofnon-activatedlithiumslagbasedgeopolymer.When4%NaOHand4%Na2SiO3areadded,the3dcompressivestrengthofthermallyactivatedlithiumslagbasedgeopolymeristhehighest,increasingby23.75%comparedtothenon-activatedlithiumslagbasedgeopolymer.Thecompressivestrengthofmicrowaveactivatedlithiumslagbasedpolymeristhehighestat28d,whichis9.73%higherthanthatofnon-activatedlithiumslagbasedpolymer.Thethermalactivationandmicrowaveactivationactivitiesareenhanced.Ettringiteand(N)C-A-S-Hgel,producedthroughthealkalineactivationreactionoflithiumslaggeopolymer,containagreateramountthantheinitiallithiumslaggeopolymer.WiththesameNa2SiO3content,theactivityoflithiumslagbasedgeopolymerdecreaseswiththeincreaseofNaOHcontent.
作者：刘柯阳 何燕 蒋明镜 石鹏程 郜志海Author：LiuKeyang HeYan JiangMingjing ShiPengcheng GaoZhihai
作者单位：苏州科技大学土木工程学院,江苏苏州215011
刊名：非金属矿 ISTIC
Journal：Non-MetallicMines
年，卷(期)：2024, 47(3)
分类号：TQ172X705
关键词：微波活化 热活化 碱激发 锂渣 地聚合物
Keywords：microwaveactivation thermalactivation alkaliactivation lithiumslag geopolymer
机标分类号：TU528TQ177X705
在线出版日期：2024年6月7日
基金项目：国家自然科学基金，长江科学院开放课题不同活化方式锂渣地聚物性能研究[
期刊论文] 非金属矿--2024, 47(3)刘柯阳 何燕 蒋明镜 石鹏程 郜志海为揭示不同活化方式锂渣制备碱激发地聚合物可行性,对比分析了未活化、微波活化和热活化锂渣基地聚合物物理力学性能.结果表明,热活化和微波活化可以显著提高锂渣活性,增强锂渣基地聚合物放热速率和放热量,且热活化锂渣活...参考文献和引证文献
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