机制砂及复合砂高性能混凝土研究(3)

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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