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1、Constructionplanoftwoashcrushedstone[1](二灰碎石施工方案[1])ConstructionplanoftwoashmacadamThebaseofthisprojectis15cmtwoashcrushedstone,theweightratioislime:FlyAsh:crushedstone=8:12:80,theconcreteconstructionplanisasfollows:1.Preparation(a)theapproachlime,flyashandcrushedston
2、emustbeinspected.Limetoreachgradelimerequirements,andfullydigestionandsieving;flyashSiO2,Fe2O3andAL203weremorethan70%,andtheuseofcoarseparticles,ashlosscompensationofmorethan20%;stonemustusecertaingradationgravel.(b)accordingtothemixtureratio,dothecompactiontestandthe
3、limedoseEDTAstandardcurvetest.(c)beforemixing,thewatercontentoflime,flyashandcrushedstoneshouldbecheckedfirst,andtheamountofaggregateandmixingwatershouldbeadjustedtotheoptimumwatercontentintime.(d)standardtestsectionconstruction.Whentheprimaryfilleristheoptimummoistur
4、econtent,particlesizetomeettherequirements,forpavingandrollingtotherequireddegreeofcompaction,accordingtothemeasureddatatodeterminereasonablerollercompactiontimesandthebestcombinationofmechanicalandmaterialthickness.2,grass-rootsconstruction(a)mixing:thisprojectintend
5、stoadopton-siteforcedmixerandcentralmixing,anddeterminetheamountofmixtureusedinconstructionaccordingtotheproportionoftheaggregateandthewatercontentattheconstructionsite.Themixtureshouldbewellblendedandthecolorshouldbeinharmony.(b)paving:usethedumpertotransportthemixtu
6、retothepavingsiteforconstruction.Intheconstructionprocessshouldpayattentiontothepavinglengthaslongaspossible,reducingjiecha.Theconstructionofintermittentorframingconstruction,tosetaside30cmnotJiechaincompaction,paving,theoldmateriallooseeradication,water,Jiechatakeste
7、ptypeconnection.(c)rolling:inordertoobtaingoodcompactioneffect,vibratoryrollerandthreewheelrollerareusedforlongitudinalandverticalrolling,whichfollowtheprincipleof"first,bothsidesandback".Thevibratoryrollerhasthefirststaticpressure,thenthefirstslowandthefast,andthewea
8、kvibrationtothestrongvibration.Smallradiuscurvemedialtolateral,longitudinalbackintothetype,horizontalcontactvibrolloverlappi