Longitudinal Joint Construction Techniques for Asphalt Pavements

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This paper was published in Transportation Research Board, Transportation Research Record 1543, 1996. Various asphalt pavement longitudinal joint construction techniques were evaluated in the field for performance.
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      LONGITUDINALJOINTCONSTRUCTIONTECHNIQUESFOR  ASPHALTPAVEMENT   By  PrithviS.Kandal  RajibB.Mallick   PaperpublishedinTransportationResearchBoard,TransportationResearchRecord1543,1996   277TechnologyParkway ã Auburn,AL36830  LONGITUDINALJOINTCONSTRUCTIONTECHNIQUESFOR  ASPHALTPAVEMENTS ByPrithviS.KandhalAssociateDirectorNationalCenterforAsphaltTechnologyAuburnUniversity,AlabamaRajibB.MallickSeniorResearchAssociateNationalCenterforAsphaltTechnologyAuburnUniversity,Alabama PaperpublishedinTransportationResearchBoard,TransportationResearchRecord1543,1996   DISCLAIMER Thecontentsofthisreportreflecttheviewsoftheauthorswhoaresolelyresponsibleforthefactsandtheaccuracyofthedatapresentedherein.ThecontentsdonotnecessarilyreflecttheofficialviewsandpoliciesoftheNationalCenterforAsphaltTechnologyofAuburnUniversity.Thisreportdoesnotconstituteastandard,specification,orregulation.i  ABSTRACT Thirtyhotmixasphalt(HMA)testsectionswereconstructedinMichigan(1992),Wisconsin(1992),Colorado(1994),andPennsylvania(1995)toevaluatetheeffectivenessoftwelvedifferentlongitudinaljointconstructiontechniques.Theperformanceofthesetestsectionswasevaluatedin1996afteronetofouryearsinservice.Thejointswithhighdensitiesgenerallyshowbetterperformancethanthosewithrelativelylowdensities.TheMichiganjointtechnique(12.5mmverticaloffsetand12:1taper)appearstohavethebestpotentialofobtainingasatisfactorylongitudinaljoint.Thecuttingwheelandtheedgerestrainingdevicetechniqueshavegoodpotentialbutaretoomuchoperatordependenttoobtainconsistentresults.Amongthethreedifferentjointrollingtechniquesusedinallfourprojects,rollingthejointfromhotsidegenerallygavethebestperformancefollowedbyrollingfromhotside152mmawayfromthejoint.PavermanufacturersshouldconsidermodifyingthepaverdesigntoobtainaMichigantype,highdensityunconfinedwedgeinthelanepavedfirst.Highwayagenciesshouldspecifyminimumcompactionlevelstobeachievedatthelongitudinal joint. KEYWORDS: longitudinaljoint,construction,HMA,hotmixasphalt,asphaltconcrete.ii
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