自密实混凝土配合比设计及性能研究

《自密实混凝土配合比设计及性能研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、ABSTRACTAmongthematerjalsman-made，concfeteis0neofthemostwjdelyandlargelyusedeconomicalbuildingones．C’urrently'thetechnOlogyofthecOncretehastw0maindirection，oneistodeVel叩thehighstren分handpedb皿anceconcrete，andtheOthcrjstomakeOrdinaryconcretehigh．perfomanced，soastopr010ngits1if

2、c-spaIl行om40巧0yeafsto60～70years．withthe伊adualdcvel叩mentofheiglltofbuildingsandsteelbarclose—packed，aswellasthedemandOftlleundergmundprqect，self-compactingconcrcteis、Ⅳorkedout．Itisembodimemofthehi曲-perforceconcretethatundefitsownwei曲t，self-锄pactionc∞crcteflowsjntoplaceandarou

3、ndobstnJctionstofiHthefomwOrkcOmpletely锄dself-compact，withoutanysegrcgationandblocbng．SeIf-compactingconcretecoⅡtainedalowIatioofwatertocement，ahiglIdosageOfpowder，aswellasahighdosageofsuperplasticizer，ensuresadequatefillingability孤dpassingabilities．Inordert0realizethere西ona

4、lrawmatefialsmix-desi印ed，11leexperimentofmortar锄ountenou曲tocnableconcreteself-compacIingaIldtheintemationalrelationshipbe觚eentherawmaterials，suchastheinfluenceofcoarseag孕egatevol啪eonthenuidity，tlleinfluenceofthecoarseag伊egateDmaxandthefineag掣egateMxonthcma】(jmumofcoarseag掣eg

5、ate，theinnuenceofthecoarseaggregateDmaxandthefineag掣egateMxonthemix-waterrequirement，theinnuenceoffumeminimumamount∞theworkabilityOf丘eshconcrete，arestudiedinthisp印eLT1lemixtllreinwhichthefixedv01啪ecoarseag掣egateispackedwithmonarisdesignedinthispapeLT1lemainfeatureofthisnewme

6、thodisthattheworkabilityof丘eshconcreteisdesi印edtllrou曲thecontmlofrheologicalpmpeniesaⅡdvolumeoffrcshmonarundertheconditionthatthemixtures仃en百hisdecidedbywate卜cementmtio．AdJustmentmargincoe彤cientofmortaLT1lispaperdevotemuchontheperfb肌anceoftheself．compactinghjgh-perfb加aIlceco

7、ncrete，invirtueofthetestsontheworkabilityoftheself_compactingconcrete，suchasslump，U-boxaIldL广boxalOngwiththemethodofmixdesign，aIldtheresultdesiTablyver王fiesthevalidjtyofthemethodoftllemixdesignadoptedinthispaper．IIInconclusion，comparcwiththeordinaryconcrcte，sometestsonthedur

8、abilityoftheself_compactingconcrctehavebeendoneinthispaper'indudingcarboniz