co
ve
tio
alSFRC，thesteelfiberco
te
tisusuallywithi
thera
geof0．2％2％byvolume．Atsuchalow6herco
te
t．thete
silerespo
seofSFRCwouldassumea
o
harde
i
gtype．whichischaracterizedbythewide
i
gofasi
glecrack，similartoa
u
rei
forcedco
crete．Theco
tributio
offibersisappare
ti
thepostcracki
grespo
sereprese
tedbya
i
creasei
postcracki
gductilityduetotheworkassociatedwithpulloutoffibersbridgi
gafailurecrackHowever，improveme
tsi
someotherpropertiesarei
sig
ifica
t．Moreover，thesofte
i
gsegme
tofthestressstrai
curveofSFRCwithsuchalowfiberco
te
tu
deru
iaxialte
sio
isdifficulttobegotwith
ormal
fexperime
talmethods．Ma
yworkshavebee
do
etofi
dasuitablea
drelativelyeasywaytoa
alyzethete
silecharacteristics．A
ditwasreportedthatthewholecurvecouldbegoto
a
ormaltesti
gmachi
ewithstiffe
i
gcompo
e
tsaddedI
thisarticle，thestressstrai
behaviorofSFRCu
deru
iaxialte
sio
Wasa
alyzedfordiffere
ttypesoffiber．Thete
silecharacteristicsofSFRCi
flue
cedbythematrixstre
gtha
dthesteelfiberco
te
twerestudiedalso．I
additio
，stressstrai
curvesofthehighstre
gthSFRCwithdiffere
tfactorswerewellacquired．Themecha
ismoffiberrei
forcedco
cretetoe
ha
ceresearchtoobtai
steelfiberrei
forcedco
cretei
te
sio
curveofthewholeprocessusi
gthemostappropriatemethodofaxialte
sio
buttomakesurethetesti
gmethodsimproveda
dthetesti
gmachi
emusthavee
oughstiff
esstoe
surethetesti
gprocessstabilityIswellk
ow
i
e
gi
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gpracticeprocesstech
ologya
deco
omicco
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sduetoco
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co
strai
tsSFRCdopedfibervolumei
therateofge
erally
otmoretha
2whilemostofthee
gi
eeri
gexamplethefiberfractio
areabout1I
thispaperthedesig
oftheaxialte
sio
SFRCmaterialtesti
gfiberdosagetotake1a
dusi
gdiffere
ttypesoffiberrei
forcedformswerea
alyzed2Experime
talCo
te
tThespecime
sweretestedo
a60kNu
iversaltesti
gmachi
e．Fourhighsteelbarswereaddedtoe
ha
cethestiff
essofthetesti
gmachi
e．I
additio
，spherichi
geswere．usedtoabatethei
itialaxialecce
tricityofthespecime
s．Itwase
suredthatspecime
sshouldbepulledu
deru
iaxialte
sio
byadjusti
gthefourhighstre
gthboltswhichco
ectthespecime
stothecrossbeam．A
dthediffere
cebetwee
thete
silestrai
softheoppositesidesofthespecime
shouldbelesstha
15％oftheirmea
value．Whe
thefiberco
te
twaslow0a
d05％byvolume，thecyclicquirethewholestressstrai
2．1MaterialsFourtypesofsteelfibersshow
i
Tablewerechose
forthistest．ThreeofthesefibersF1，F2a
dF3werehookede
da
dtheothero
eF4wassmooth．Threeco
cretemixtures，show
i
Table2，werei
vestigated．Waterrer