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1、第35卷第4期水利水电科技进展2015年7月Vol.35No.4AdvancesinScienceandTechnologyofWaterResourcesJul.2015DOI:10.3880/j.issn.10067647.2015.04.019磷渣粉石灰石粉复合掺合料及其混凝土的性能试验1,21,21,21,21,21,2王摇珩,陆采荣,梅国兴,刘伟宝,戈雪良,杨摇虎(1.南京水利科学研究院材料结构研究所,江苏南京摇210024;2.水利部水工新材料工程技术研究中心,江苏南京摇210024)摘要:为了研究磷渣粉、石灰石粉复合掺合料(PL掺合料)替代粉
2、煤灰的可行性,测试了磷渣粉和石灰石粉、域级粉煤灰等材料的基本性能,对比分析了其水泥浆体的微观形貌,测试了不同掺合料大坝混凝土的力学、耐久、变形性能。通过PL掺合料混凝土与粉煤灰混凝土的性能对比试验,结果表明PL掺合料在微观结构和宏观性能方面综合优于域级粉煤灰,尤其是其长龄期的抗压强度、极限拉伸值等性能;PL掺合料成本低廉,具有较高的技术经济效益和社会效益,在缺乏优质粉煤灰的西南地区,可以替代粉煤灰作为大坝混凝土的掺合料。关键词:掺合料;磷渣粉;石灰石粉;粉煤灰;微观形貌;孔结构;大坝混凝土+中图分类号:TV42.3;TU528.041摇文献标志码:A摇摇文
3、章编号:10067647(2015)04008505Performancetestofphosphorusslagpowderandlimestonepowdercompoundmineraladditiveandthe1,21,21,21,21,21,2compoundedconcrete//WANGHeng,LUCairong,MEIGuoxing,LIUWeibao,GEXueliang,YANGHu(1.MaterialsandStructuralEngineeringDepartment,NanjingHydraulicResearchInsti
4、tute,Nanjing210024,China;2.ResearchCenterofMinistryofWaterResourcesonNewMaterialsinHydraulicStructures,Nanjing210024,China)Abstract:Inordertostudythefeasibilityofthecompoundmineraladditivescomposedofphosphorusslagpowderandlimestonepowder(PL)forsubstitutingflyash(FA),basiccharacter
5、isticsofphosphorusslagpowder(P),limestonepowder(L)andFAweretested.Additionally,themicrostructuresoftheircementpastewereanalyzedcomparatively,andtheperformanceofmechanical,durability,deformationofdamconcretewithdifferentmineraladditivesweretested.Accordingtothecomparisonofcharacter
6、isticsofPLconcreteandFAconcrete,itisconcludedthattheperformanceofPLconcreteisbetterthanthatofFAconcreteonmicroandmacroscales,especiallyonthelong鄄termcompressivestrength,andultimatetensilestrainscale.Besides,thePLmineraladditivehaslowercostaswellashighertechnicalandsocialbenefits.T
7、hus,inSouthwestChina,whereitislackinghigh鄄qualityFA,thesubstitutionofPLadditiveforFAasmineraladditiveusedindamconcreteisfeasiblealternative.Keywords:mineraladditive;phosphorusslagpowder;limestonepowder;flyash;micromorphology;proestructure;damconcrete摇摇国内混凝土坝的建造过程中,通常采用火电厂的硫含量也较高,使
8、用这样的粉煤灰作为掺合料,对混粉煤灰作为混凝土掺合料。粉煤灰是火力
