欢迎来到天天文库
浏览记录
ID:32444363
大小:237.70 KB
页数:3页
时间:2019-02-04
《石灰石粉-粉煤灰-矿粉多元复掺对混凝土性能的影响》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、2014年第8期(总第298期)混凝土原材料及辅助物料Number8in2014(Tota1No.298)ConcreteMATERIALANDADMINICLEdoi:10.3969/j.issn.1002—3550.2014.08.019石灰石粉一粉煤灰一矿粉多元复掺对混凝土性能的影响冯庆革佰。杨阳协。乔永平,蒋玉柳。,王赕。(1.广西大学a.环境学院;b.化学化工学院,广西南宁530004;2.广西建设工程质量安全监督总站,广西南宁530022;3.南宁市建筑管理处,广西南宁530023)摘要:研究了石灰石粉按不
2、同比例分别取代矿粉和粉煤灰的多元复掺方式以及CTF混凝土增效剂的掺入对混凝土工作性能、强度和抗氯离子渗透性的影响。试验结果表明:在适宜掺量下,石灰石粉等量替代粉煤灰或矿粉,可以有效地改善工作性能,而随着替代量的增加,工作性能呈先增后减的趋势;石灰石粉取代粉煤灰或矿粉的量在50%之内时,对混凝土各龄期强度影响不大,但完全替代时,对混凝土的后期强度发展不利;石灰石粉替代粉煤灰或矿粉对混凝土的抗氯离子渗透性不利,电通量随替代量增加而增大;CTF混凝土增效剂的掺人可以有效地改善混凝土的和易性,提高强度以及抗氯离子渗透性。关键词
3、:石灰石粉;矿粉;粉煤灰;CTF混凝土增效剂;多元复掺中图分类号:TU528.041文献标志码:A文章编号:1002—3550(2014)08—0068—03Multivariatemixedeffectoflimestonepowder-flyash—slagpowderontheperformanceofconcreteFENGQingge,YANGya,QOYongping2,JIANGYuliu,WANGYi(1a.CollegeofEnvironment;b.CollegeofChemistryandChem
4、icalEngineering,GuangxiUniversity,Nanning530004,China;2.Guangxiconstructionengineeringqualityandsafetysupervisioncentralstation,Nanning530022,China;3.NanningArchitecturalAdministrativeOfice,Nanning530023,China)Abstract:Slagpowderandflyashwerereplacedwithlimeston
5、epowderbydiferentqualityratios,inthisway,itdiscussedtheinfiu—enceofthecombineduseofmineraladditiveandtheCTFconcretesynergist,ontheworkability,strengthandtheresistancetochlorineionpenetrationofconcrete.Resultsofthetrialindicatedthatundertheappropriatemixcontentli
6、mestonepowderequallyreplacingflyashorslag,canefectivelyimprovetheworkingperformance,theworkabilityincreasedfirstlyandthendecreasedastheincrementofre—placement.Limestonepowderreplacedtheamountofflyashorslagwithinsubstitutionratio50%,itdidnotmuchafectthestrengthof
7、concrete,butcompletelyreplacing,thelaterstrengthdevelopmentofconcretedevelopedslowly.Limestonepowderinsteadofflyashorslagontheresistancetochlorideionpermeabilityofconcrete,electricfluxincreasedwithincreasingamountofreplacement.TheCTFconcretesynergistCanefectivel
8、yimprovetheworkability,enhancethestrengthandtheresistancetochlorideionpermeabilityofconcrete.Keywords:limestonepowder;slagpowder;flyash;CTFconcretesynergist;multivari
此文档下载收益归作者所有