-30-第45卷第6期非金属矿Vol.45No.62022年11月Non-MetallicMinesNovember,2022高温改性磷石膏-矿渣粉-水泥砂浆性能研究吴海科1程想2王玲玲2*（1贵阳职业技术学院，城乡规划建设分院，贵州贵阳550025；2贵州大学土木工程学院，贵州贵阳550025）摘要以50%掺量高温改性磷石膏-矿渣粉-水泥砂浆(HPGM)为研究对象，探究单掺和复掺生石灰、硅灰对HPGM稠度、抗压强度及耐水性的影响规律。结果表明，单掺生石灰或硅灰时，HPGM抗压强度及耐水性随生石灰掺量的增加先升高后降低，随硅灰掺量的增加而逐渐升高。当生石灰与硅灰掺量均为5%时，HPGM28d抗压强度达42.4MPa。当复掺3%生石灰与7%硅灰时，HPGM耐水性明显提升，其软化系数为0.79。关键词硅灰；生石灰；力学性能；耐水性中图分类号：TQ177.32；TB321文献标志码：A文章编号：1000-8098(2022)06-0030-04ResearchonthePerformancesofHigh-TemperatureModifiedPhosphogypsum-MineralPowder-CementMortarWuHaike1ChengXiang2WangLingling2*(1UrbanandRuralPlanningandConstructionBranch,GuiyangVocationalandTechnicalCollege,Guiyang,Guizhou550025;2CollegeofCivilEngineering,GuizhouUniversity,Guiyang,Guizhou550025)AbstractTheeffectsofsingle-dopedandre-dopedquicklimeandsilicaashontheconsistency,compressivestrength,andwaterresistanceofHPGMwereinvestigatedbymeansoflarge-doping(50%)high-temperaturemodifiedphosphogypsum-mineralpowder-cementmortar(HPGM).Theresultsshowthatwhenquicklimeorsilicaashissingle-mixed,thestrengthandwaterresistanceofHPGMincreaseandthendecreasewiththeincreaseofthequicklimedosage,andgraduallyincreasewiththeincreaseofthesilicaashdosage.Whenthedosageofquicklimeandsilicaashis5%,respectively,the28dcompressivestrengthofHPGMreaches42.4MPa;When3%quicklimeand7%silicaasharemixed,thestrengthwaterresistanceofHPGMimprovessignificantly,anditssofteningcoefficientis0.79.Keywordssiliconash;quicklime;mechanicalproperties;waterresistance磷石膏主要成分为二水硫酸钙，含有磷、氟等杂质，pH值偏低，主要应用于水泥工业、化工原料与石膏建材制品等方面。原状磷石膏无胶凝性，且磷石膏类胶凝材料、砂浆、混凝土等建筑材料存在强度低、耐水性能差的问题，限制了磷石膏利用率[1-2]。研究表明，对磷石膏采用高温煅烧或添加掺和料处理等方式...
