-18-第46卷第3期非金属矿Vol.46No.32023年5月Non-MetallicMinesMay,2023基于不同评价方法的解毒飞灰火山灰活性研究倪亚玲1张大江2崔敬轩1郭胜男1聂卿1*(1中国建筑材料科学研究总院有限公司,北京100024;2北京工业大学材料与制造学部,北京100124)摘要研究不同工艺处理的解毒飞灰的化学成分、矿物组成和粒径分布特征,采用火山灰性试验法、强度指数法、热分析法对解毒飞灰活性进行评价。结果表明,不同工艺处理的解毒飞灰组成不同,活性差异较大。采用火山灰性试验法,组分中SO3含量会影响其活性,活性依次为:原灰(ZF)>热解水洗飞灰(GF)>热解飞灰(HF);采用强度指数法,在控制比表面积基本相同的条件下,抗压强度比均大于0.65,活性表现为:ZF>HF>GF;采用热分析法,3种飞灰在Ca(OH)2脱水区间失量分别为8.91%、9.38%、9.78%,该方法活性结果与强度指数法一致,但不能定量分析。强度指数法和热分析法更适合定量定性评价解毒飞灰火山灰活性,并且二者之间存在较好的相关性。关键词解毒飞灰;火山灰活性;火山灰性试验法;强度指数法;热分析法中图分类号:X799.3;TQ172文献标志码:A文章编号:1000-8098(2023)03-0018-05ResearchonDetoxificationFlyAshVolcanicAshActivityBasedonDifferentEvaluationMethodsNiYaling1ZhangDajiang2CuiJingxuan1GuoShengnan1NieQing1*(1ChinaBuildingMaterialsAcademyCo.,Ltd.,Beijing100024;2DepartmentofMaterialsandManufacturing,BeijingUniversityofTechnolo-gy,Beijing100124)AbstractBystudyingthechemicalcomposition,mineralcompositionandparticlesizedistributioncharacteristicsofdetoxifiedflyashtreatedbydifferentprocesses,thedetoxificationflyashactivitywasevaluatedbypozzolanictestmethod,strengthindexmethod,andthermalanalysismethod.Theresultsshowedthatthecompositionofdetoxificationflyashtreatedbydifferentprocesseswasdifferent,andtheactivitywasquitedifferent.Usingvolcanicashtestmethod,theSO3contentinthecomponentswouldaffecttheiractivity,theactivitysequencewasasfollows:ZF>GF>HF;Usingstrengthindexmethod,undertheconditionofthespecificsurfaceareabeingbasicallythesame,thecompressivestrengthratiowasgreaterthan0.65,andtheactivityperformancewasasfollows:ZF>HF>GF;Usingthermalanalysismethod,thelossesofthreetypesofflyashintheCa(OH)2deh...