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1、讹Q如上纟《专业英语摘要翻译》课程作业专业：年级：姓名:学号：**大学土木工程学院2015年6月PreparationofC200greenreactivepowderconcreteanditsstatic-dynamicbehaviorsC200绿色活性粉末混凝土的制备和它的静力、动力性能的研究AbstractInthispaper,anewtypeofgreenreactivepowderconcrete(GRPC)withcompressivestrengthof200MPa(C200GRPC)is
2、preparedbyutilizingcompositemineraladmixtures,naturalfineaggregates,shortandfinesteelfibers.Thequasi-staticmechanicalproperties(mechanicalstrength,fractureenergyandfiber-matrixintcrfacialbondingstrength)ofGRPCspecimens,curedinthreedifferenttypesofregimes(s
3、tandardcuring,steamcuringandautoclavecuring),areinvestigated.TheexperimentalresultsshowthatthemechanicalpropertiesoftheC200GRPCmadewiththecementitiousmaterialsconsistingof40%ofPortlandcement,25%ofultrafineslag,25%ofultrafineflyashand10%ofsilicafume,4%volum
4、efractionofsteelfiberarehigherthantheothers.Thecorrespondingcompressivestrength,flexuralstrength,fractureenergyandfiber-matrix...9interfacialbondingstrengtharemorethan200MPa,60MPa,30,000J/rrTand14MPa,respectively.ThedynamictensilebehavioroftheC200GRPCisals
5、oinvestigatedthroughtheSplitHopkinsonPressureBar(SHPB)accordingtothespallingphenomena.ThedynamictestingresultsdemonstratethatstrainratehasanimportanteffectonthedynamictensilebehaviorofC200GRPC.Withanincreaseofstrainrate,thepeakstressrapidlyincreasesinthedy
6、namictensilestress-timecurves・TheC200GRPCexhibitsanobviousstrainratestiffeningeffectinthecaseofhighstrainrate.Finally,themechanismofexcellentstaticanddynamicpropertiesgainsofC200GRPCisalsodiscussed.摘要：本文，使用合成矿物外加剂、天然细骨料、短细钢纤维制备了一种抗压强度200MPa的绿色活性粉末混凝土(GRPC)
7、o研究了GRPC样本在三种不同养护制度下(标准养护、蒸汽养护、蒸压养护)的拟静力性能(力学强度、断裂能力和纤维矩阵界面粘合强度)。实验结果表明由胶结材料(包括40%波特兰水泥、25%超细炉渣、25%超细飞灰和10%硅粉、4%容积率的钢纤维)制成的C200GRPC的力学性能比其它的高。相应的抗压强度超过200Ml)a,抗弯强度超过60MPa,断裂能力超过30000J/ni2,纤维矩阵界面粘合强度超过14MPa。根据剥落现象，通过分离式霍普金森压杆研究了C200GRPC的动力抗拉性能。动力测试结果表明应变率对C
8、200GRPC相应的动力抗拉性能有重要影响。在动力抗拉应力-时间曲线上，随应变率提高，峰值应力很快提高。在高应变率情况卜，C200GRPC展示了明显的应变率硕化效果。最后，本文也讨论了C200GRPC良好的静力和动力性能增加机理。Influenceofaggregateandcuringregimeonthemechanicalpropertiesofultra-highperformancefibrereinf
