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时间:2019-02-04
《锰合金渣粗集料对路面混凝土性能的影响》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、学兔兔www.xuetutu.com2012年第8期(总第274期)混凝土原材料及辅助物料Number8in2012(TotalNo.274)ConcreteMATERIALANDADMINICLEdoi:10.39698.issn.1002—3550.2012.08.019锰合金渣粗集料对路面混凝土性能的影响万朝均,黄太忠,田帅(重庆大学材料科学与工程学院,重庆400045)摘要:将块状锰合金渣破碎成颗粒后制备为连续级配的锰合金渣粗集料,并以25%、50%、75%~1100%的取代率取代天然粗集料以研究其对路面混凝工作性能、力学性能和耐磨性
2、能的影响。结果表明:锰合金渣粗集料的针片状颗粒含量和吸水率大于天然粗集料,但按照适当比例级配后适用于各类路面混凝土;路面混凝土的坍落度随着锰合金渣粗集料取代率的增大而有较大幅度的减小;锰合金渣粗集料取代率小于50%时对路面混凝土的力学性能和耐磨性能影响不大,取代率超过50%PA后路面混凝土的力学性能和耐磨性能相对于基准组分别提高了约10%和30%,利用锰合金渣粗集料可制备性能优良的路面混凝土。关键词:锰合金渣;路面混凝土;集料;力学性能;耐磨性能中图分类号:TU528.041文献标志码:A文章编号:1002—3550(2012)08—0062
3、—04InfluenceofcoarseaggregateofmanganesealloyslagonpropertiesofpavementconcreteWANChao-jun,HUANGTai-zhong,TIANShuai(CollegeofMaterialsScienceandEngineering,ChongqingUniversity,Chongqing400045,China)Abstract:Blockymanganesealloyslagwascrushedintoparticles,subsequentlywereuse
4、dtOpreparecoarseaggregatewithcontinuousgrada—tion.Theinfluenceofcoarseaggregateofmanganesealloyslagonworkability,mechanicalpropertiesandwearresistanceofpavementconcretesWaSinvestigated,inwhichthenaturalcoarseaggregatewerereplacedbythecoarseaggregateofmanganesealloyslagatthe
5、percentageof25%,50%,75%and100%respectively.Theresultsshowthatthecontentofneedleandplategrainandwaterabsorptionofcoarseaggregateofman—ganesealloyslagarehigherthanthatofnaturalCOarseaggregate,coarseaggregateofmanganesealloyslagcouldbeapplicableintypesofpave-mentconcretewhenit
6、isgraaeabyappropriatepercentage;theslumpofthepavementconcreteswasdecreasedwiththeincreaseofthereplace—mentratioofcoarseaggregateofmanganesealloyslag;whenthereplacementratioofcoarseaggregateofmanganesealloyslagislessthan50%,themechanicalpropertiesandwearresistanceofpavementc
7、oncretewerelittlechanged,whilethereplacementratioismorethan50%,theme-chanicalpropertiesandwearresistanceofpavementconcretewereimprovedapproximatelyby10%and30%,respectively.Pavementconcreteswithexcellentperformancecanbepreparedbythecoarseaggregateofmanganesealloyslag.Keyword
8、s:manganesealloyslag;pavementconcrete;aggregate;mechanicalproperty;wearresistance人
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