建筑工程毕业设计外文翻译英文原文
Theeffectsofsurfacepreparatio
o
thefracturebehaviorofECCco
creterepairsystem
ToshiroKamadaaVictorCLibaDepartme
tofCivilE
gi
eeri
gGifuU
iversityYa
agidoGifu5011193Japa
bAdva
cedCivilE
gi
eeri
gMaterialsResearchLaboratoryDepartme
tofCivila
dE
viro
me
talE
gi
eeri
gU
iversityofMichiga
A
ArborMichiga
MI481092125USAReceived7July1999accepted15May2000AbstractThispaperprese
tsthei
flue
ceofsurfacepreparatio
o
theki
kcracktrappi
gmecha
ismofe
gi
eeredceme
titiouscompositeECCco
creterepairsystemI
ge
eralsurfacepreparatio
ofthesubstrateco
creteisco
sideredesse
tialtoachieveadurablerepairI
thisexperime
tthesmoothsurface’’systemshowedmoredesirablebehaviori
thecrackpatter
a
dthecrackwidthstha
theroughsurface’’systemThisdemo
stratesthatthesmoothsurfacesystemispreferabletotheroughsurfacesystemfromtheviewpoi
tofobtai
i
gdurablerepairstructureThespecialphe
ome
o
ofki
kcracktrappi
gwhichpreve
tsthetypicalfailure
fmodesofdelami
atio
orspalli
gi
repairedsystemsisbestrevealedwhe
thesubstrateco
creteispreparedtohaveasmoothsurfacepriortorepairThisisi
co
trasttothesta
dardapproachwhe
thesubstrateco
creteisdeliberatelyroughe
edtocreatebetterbo
di
gtothe
ewco
crete2000ElsevierScie
ceLtdAllrightsreserved
KeywordsECCrepairsystemKi
kcracktrappi
gmecha
ismSurfacepreparatio
Durablerepair
1I
troductio
E
gi
eeredceme
titiouscompositesECCs12arehighperforma
cefiberrei
forcedceme
tbasedcompositematerialsdesig
edwithmicromecha
icalpri
ciplesMicromecha
icalparametersassociatedwithfibermatrixa
di
terfacearecombi
edtosatisfyapairofcriteriathefirstcrackstresscriterio
a
dsteadystatecracki
gcriterio
3toachievethestrai
harde
i
gbehaviorMicromecha
icsallowsoptimizatio
ofthecompositeforhighperforma
cewhilemi
imizi
gtheamou
tofrei
forci
gfibersge
erallylesstha
23ECChasate
silestrai
capacityofupto6a
dexhibitspseudostrai
harde
i
gbehavioraccompa
iedbymultiplecracki
gItalsohashighultimatete
silestre
gth510MPamodulusofrupture825MPafracturetough
ess2530kJm2a
dcompressivestre
gthupto80MPaa
dstrai
06Atypicalte
silestressstrai
curveisshow
i
Fig1ECChasitsu
ique
ess
oto
lyi
fsuperiormecha
icalpropertiesi
te
sio
ori
relativelysmallamou
tof
choppedfiberusagebutalsoi
micromecha
icalmethodologyi
materialdesig
TheuseofECCforco
creterepairwasproposedbyLietal4a
dLima
dLi5I
these
experime
tsspecime
sreprese
tativeofa
actualrepairsystembo
dedoverlayofaco
cretepaveme
taboveajoi
twereusedItwasshow
thatthecommo
failurephe
ome
o
aof
spalli
gordr
