Page 147 - 《水资源与水工程学报》2023年第1期
P. 147
!34 " ! 1 # & ' ( ) & * + , - Vol.34No.1
2023 $ 2 % JournalofWaterResources&WaterEngineering Feb.,2023
DOI:10.11705/j.issn.1672-643X.2023.01.17
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FGHIJ:TU521;U416.214 KLMNO:A KPQJ:1672643X(2023)01014309
Roadperformanceofsubgradeconsistedofcement
stabilizedsteelslagandcrushedstone
1
1
1,2
1
WANGQingzhou,LIANGYingshuo,ZHAOYunfei ,ZHANGZhiyin,MAShibin 1
(1.SchoolofCivilandTransportationEngineering,HebeiUniversityofTechnology,Tianjin300401,China;
2.SchoolofHighway,Chang’anUniversity,Xi’an710061,China)
Abstract:Inordertoensuretheperformanceofsemirigidsubgradeunderthepremiseofmaximumuse
ofsteelslag ,naturallygradedcementstabilizedsteelslagmixwithpoorgradationwasappliedtolow
graderoadsubgradetoexploretheinfluenceofgradationonthemechanicalproperties ,shrinkageproper
tiesanddurabilityofcementstabilizedsteelslagmix.Moreover,thefeasibilityandapplicabilityofthis
mixintheconstructionofsemirigidsubgradeoflowgraderoadswereinvestigated.Theresultsshowed
thatthemechanicalpropertiesofthefourtypesofgradedcementstabilizedsteelslagmixesincreasedwith
theincreaseofageandcementdosage ,withthebestperformanceofthemixwithmediumgradationand
theworstperformanceofthatwithnaturalgradation.Thegradationsignificantlyaffectsthemechanical
properties,shrinkagepropertiesanddurabilitypropertiesofthemix.Althoughtheroadpreformanceof
naturallygradedcementstabilizedsteelslagmixisinferiorduetopoorgradation,itsroadperformancein
dicatorsarestillabletomeettherequirementsofthespecificationforlowgraderoads,aswellasmaximi
zestheuseofsteelslagintheconstructionofroadsubgrade ,whichwillbringbettersocialandeconomic
benefits.Therefore ,itisrecommendedthatthecementstabilizedsteelslagmixwithnaturalgradedsteel
slagshouldbeadoptedforthelowgraderoadsubgrade.
Keywords:cementstabilizedcrushedstone;steelslag;poorgradation;naturalgradation;roadper
formance
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