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节能与环保
强 驰1，高越青1，梁超锋1,2，卢 娜1，陈尚权1
摘 要：介绍了再生砖粉的物理化学特性和水化活性潜质，综述了再生砖粉对水泥基材料的水化、工作性、力学性能和耐久性等方面的影响，分析了其作用机理，并指出了有待进一步研究的问题。Abstract:Thephysical-chemicalcharacteristicsandhydrationbehaviorsofrecycledbrickpowderareintroduced,anditsinfluenceoncementhydration,workability,mechanicalpropertiesanddurabilityofcement-basedmaterialsarereviewed,anditsmechanismofactionisanalyzed,andtheproblemsoftheapplicationofrecycledbrickpowderincement-basedmaterialstobefurtherstudiedarepointedout.
强驰,高越青,梁超锋,等.再生砖粉在水泥基材料中的应用进展[J].混凝土与水泥制品,2020(7):92-95.
QIANG Chi,GAO Yue-qing,LIANG Chao-feng,et al.Application Progress of Recycled Brick Powder in Cement-based Materials[J].China Concrete and Cement Products,2020(7):92-95.
郑永超1,2，周钰沦1,2，房桂明1,2，陈旭峰1,2，吝晓然3，王 卉1,2，黄天勇1,2
摘 要：为了提高钢渣的资源化利用率，利用钢渣制备了矿物掺合料，测试了钢渣粉自身的性能指标，并用钢渣粉取代矿粉配制了C30混凝土，研究了钢渣粉对混凝土力学性能、体积稳定性和耐久性能的影响。结果表明，钢渣粉的掺入可降低胶凝材料体系的总水化热，但对外加剂饱和掺量点和经时损失率影响较大。利用钢渣粉取代矿粉对混凝土的出机工作性影响不大；随着钢渣粉掺量的增多，混凝土的早期强度低，后期强度增进量较大；掺钢渣粉混凝土的收缩率、氯离子渗透系数及碳化深度均高于基准组；将钢渣粉作为矿物掺合料配制混凝土时需控制其掺量。Abstract:Inordertoimprovetheresourceutilizationofsteelslag,thesteelslagwasusedtopreparemineraladmixture,andtheperformanceindexofsteelslagpowderwastested,andC30concretewaspreparedbyusingsteelslagpowderinsteadofmineralpowder,anditseffectonmechanicalproperties,volumestabilityanddurabilityofconcretewasstudied.Theresultsshowthattheincorporationofsteelslagpowdercanreducethetotalhydrationheatofcementitiousmaterialsystem,butithasagreatinfluenceonthesaturationdosagepointandthelossrateoffluidityovertime.Usingsteelslagpowderinsteadofmineralpowderhaslittleeffectontheperformanceoffreshconcrete.Withtheincreaseoftheamountofsteelslagpowder,theearlystrengthofconcreteislow,andthelaterstrengthincreasesgreatly.Theshrinkage,chlorideionpermeabilitycoefficientandcarbonizationdepthofthesteelslagpowderconcretearehigherthanthoseofthecomparativesample.Whenthesteelslagpowderisusedasamineraladmixturetoprepareconcrete,itisnecessarytocontrolitscontent.
郑永超,周钰沦,房桂明,等.利用钢渣制备矿物掺合料对混凝土性能的影响[J].混凝土与水泥制品,2020(7):87-91.
ZHENG Yong-chao,ZHOU Yu-lun,FANG Gui-ming,et al.Preparation of Mineral Admixtures from Steel Slag and Its Effect on Concrete Performance[J].China Concrete and Cement Products,2020(7):87-91.