机制砂及复合砂高性能混凝土研究(3)
发布时间:2021-06-06
发布时间:2021-06-06
重庆大学硕士学位论文
英文摘要
ABSTRACT
With
thedevelopmentofeconomy
of
sI砷K:tl】rebecomesbiggerthetechnologyofco蛐whichiswidelyusedinbuilding
to
bIlildingbecomeshigh=and
higher,andspan
materialneed
improve.Hi出performanceconc][ete叫gh
strength
workabilityhighstrength
and
high
durab嘶)isproduced.The
cost
ofconcretechangesfxomC20.C30to
C70.C80concrcte蚰期19thinsomecountriesis
a1]吨above
C100.Althesametime,
engi=ueedng
used.
mustbeconcretedwhen
highstrengtkhigh
performance
concreteis
ItisrequiredinJGJ/T55-2000Specificationforproportiondesignofordinary
concrctc
and
HSCC99-1Structuredesign
and
wokemethodofhighstrengthconcrete,
concrcteis
fineaggregateofhighs心englhconcrctc
andpumped
bcttcrtouseBaRlral
middlefinemodulussand,buttherea∞onlysuperfinesandalongtheriversideof
JialingRiver
andYangtse
River.Sointheconstructionofimportantengineeringbefore
or
forconcretewhose
s咖gthisC50
usmg
local
aboveC50,itisneedtopurchasefineaggregate
from
Jianyang
It's
or
DcyangSichuanProvin∞.
significance
concrete
materialto
produce
highstrangthandhigh
performance
inChongqing.
coBcretcis
Developmentofhighstreng,thandhighperformance
absenceofnaturalmiddlemodulussan&Alsothe
limitedb(ⅪatlSeof
isinfluenced
consm础ontechnology
modulus
sand
inChongqing.Forsolvingthisproblem,thisworkisusingmixedsand(manufactured
sandand
Yangtse
River
sand)instead
ofnormalmiddle
and
ooarse
sand
toproducemixedsand
hi曲strangthandhigh
concrete
performanceconcrcte.Theresultsis
concrete.
simular,compare
C80cOmebe
with11aturalsand
Itisshowsthathigh1’c-rformanceconcrctcwhoseproducedwithlocalmaterialinChongqing.
str螂h
isC70
or
Keywords:HighStrength,HighPerformancc,Concrete,LocalMaterial
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