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1、學兔兔www.xuetutu.com2012年第8期(總第274期)混凝土原材料及輔助物料Number8in2012(TotalNo.274)ConcreteMATERIALANDADMINICLEdoi:10.39698.issn.1002—3550.2012.08.019錳合金渣粗集料對路面混凝土性能的影響萬朝均,黃太忠,田帥(重慶大學材料科學與工程學院,重慶400045)摘要:將塊狀錳合金渣破碎成顆粒后制備為連續(xù)級配的錳合金渣粗集料,并以25%、50%、75%~1100%的取代率取代天然粗集料以研究其對路面混凝工作性能、力學性能和耐磨性
2、能的影響。結果表明:錳合金渣粗集料的針片狀顆粒含量和吸水率大于天然粗集料,但按照適當比例級配后適用于各類路面混凝土;路面混凝土的坍落度隨著錳合金渣粗集料取代率的增大而有較大幅度的減?。诲i合金渣粗集料取代率小于50%時對路面混凝土的力學性能和耐磨性能影響不大,取代率超過50%PA后路面混凝土的力學性能和耐磨性能相對于基準組分別提高了約10%和30%,利用錳合金渣粗集料可制備性能優(yōu)良的路面混凝土。關鍵詞:錳合金渣;路面混凝土;集料;力學性能;耐磨性能中圖分類號:TU528.041文獻標志碼:A文章編號: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