Why choose high speed without using a concrete pavement with better stability?

Nowadayspeople'squalityoflifeisgettinghigherandhigher,andcarshavebecomeanindispensablemeansoftransportation.Almosteveryfamilyoffourwillhaveacar.However,whenwedriveout,weshouldnotcareabouthowfastthecarcandrive,buthowtodriveitsafer.Inadditiontochoosingbetterqualitytires,pavementmaterialscanhaveamajorimpactonourdrivingsafety. Atpresent,themorecommonroadsurfaceinChinaisasphaltpavementandconcretepavement,whichisfamiliartoeveryone.However,conventionally,reinforcedconcretepavementshavemuchhigherdurabilityanddurabilitythanasphaltpavements.Whynotuseasphaltpavementsinsteadofhighspeed? Infact,intheearlydaysofChina,asphaltpavementwasnotverycommon,mainlybasedonconcretepavement.Untillater,itwasfoundthatasphaltpavementhadbetterroadperformance,betterductility,flexibilityandplasticity,anditwasgraduallypromoted..Whenitcomestoroadflexibility,thisisstillveryimportant.Becauseontheroad,inadditiontosmallvehiclesforhomeuse,largeandheavytransportvehiclescanoftenbeseen.Althoughtheconcretepavementisveryrigid,ithasnotoughnessandispronetobreakage. Anotherpointistheconstructionandmaintenanceofconcretepavement.Asweallknow,duetoitscharacteristics,afterfillingconcrete,inordertoensurethequalityoftheroadsurface,itneedstowaitforittocompletelysolidifybeforeitcanbeopenedtotraffic.Thistimewillgenerallyexceed20days.Theremustbenodisturbanceduringthisperiodtoensurecontinuedandgoodmaintenance.Intermsofmaintenance,sincetheconcretestructuresaregenerallydesignedtobepiecebypiece,ifdamageoccurs,thewholeconcreteslabshouldbeexcavatedandreconstructedasawhole,andtheconstructionistroublesome. Moreover,inordertoensurethatthereisnogreatinfluenceonthethermalexpansionandcontraction,thegapbetweentheconcreteslabsisrelativelylarge,whichalsocausesustogenerateverylargenoiseduringthedrivingprocess.Becausetheconcreteroadsurfaceishard,whenthevehiclespeedexceeds80km/h,thecarnoisewillbeveryobvious.Althoughthecarisgenerallysoundproof,thetimeisstilluncomfortableontheroadwithageneralspeedof120orso.

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