IS732006PAVINGBITUMEN

\!,\IS73:2006n$11((114911*@lTwRwi?rqs’PTT-fmTFzIndianStandardPAVINGBITUMEN—SPECIFICATION(ThirdRevision)\IlCS93.080.20II0BIS2006BUREAUOFINDIANSTANDARDSMANAKBHAVAN,9BAHADURSHAHZAFARMARCNEWDELHI110002Jufy2006PriceGroup2—IBitumen,TarandTheirProductsSectionalCommittee,PCD6FOREWORDThisIndianStandard(ThirdRevision)wasadoptedbytheBureauofIndianStandards,afterthedraftfinalizedbytheBitumen,TarandTheirProductsSectionalCommitteehadbeenapprovedbythePetroleum,CoalandRelatedProductsDivisionCouncil.Thisstandardwasfirstpublishedin1950as‘Specificationforasphalticbitumenandfluxednativeasphaltforroadmakingpurpose’whichwasrevisedin1961tochangethegradesofmaterialandincorporatethemethodsoftestasper1S1201toIS1220:1958‘Methodsfortestingtarandbitumen’.Inthefirstrevision,thegradesoffluxednativeasphaltweredeletedandessentiallythepavinggradeswereincluded.BasedontherevisedmethodsoftestinIS1201toIS1220:1978‘Methodsfortestingtarandbituminousmaterials(firstrevision)’andtheadditionaldatathathadbecomeavailable,secondrevisionwaspreparedin1992.Bituminousmixespreparedwithbindershavinghighwaxcontenthavetendenciestobecomebrittleincoldweatherandtobleedinhotweather.Inthesecondrevision,separatetablesofrequirementsofpavinggradebitumenderivedfromwaxycrudeandnon-waxycrudehavebeenprepared.Requirementsofperformancetestslikepenetrationratio,paraffinwaxcontent,andviscosityat60°Cand135°Candretainedpenetrationafterthinfilmoventesthavebeenincorporated.Besides,sixgradesofbitumenderivedfromwaxycrudehavebeenunifiedintofourgradesandinthecaseofbitumenfromnon-waxycrude,anadditionalgradeof50/60penetrationhasbeenintroducedonthebasisofthedatamadeavailableilomastudycarriedoutjointlybytheCentralRoadResearchInstituteandtheIndianOilCorporation(R&D)Centre,Faridabad.Inthisthirdrevisiongradingofbitumensischangedfrompenetrationgradetoviscositygrade.Thevariabilityinperformanceathightemperaturescanbeaddressedbyadoptingaviscosity-gradedbitumenspecification(basedonviscosityat60”C)inlieuofthecurrentpenetration-gradedspecification(basedonpenetrationat25”C).Tenderaspha[tmixtures,whichpushandshoveundertherollerwheelspresentingproblemsduringcompaction,havealsobeenencounteredintherecentpast.Sincetheviscosity-gradedbitumenspecificationhasarequirementofminimumviscosityat135°C,itwillalsobehelpfulinminimizingthetendermixproblemsinthefield.Adoptionofviscosity-gradedpavingbitumenspecificationwillalsoreducethenumberoftotalteststo7,whichwillreducethecostoftestingbitumen.Thiswillresultfromeliminatingempiricaltests/parameterssuchas-penetrationratio,paraftlnwaxcontent,andFraassbreakingpointwithoutcompromisingthequa]ityofbitumen.Also,nonewtestsneedtobeintroducedinimplementingthisspecification.Sincehighpenetrationvaluesaredesirableforpavementdurability,requirementforaminimumpenetrationvalueisadequateandhasbeenretainedintheviscosity-gradedspecification.Speci@ingamaximumvalueforpenetrationisundesirableandwillrejectsomegoodqualitybitumensunreasonably.Thisstandardisoneoftheseriesofstandardsonbitumen.Otherspecificationssofarpublishedinthisseriesare:ISNo.7Me21”7:1988Specificationforcutbackbitumen(secondrevision)454:1994Cutbackbitumentlomwaxycrude—Specification(secondrevision)702:1988Specificationforindustrialbitumen(secondrevision)Forthepurposeofdecidingwhetheraparticularrequirementofthisstandardiscompliedwith,thefinalvalue,observedorcalculated,expressingtheresultofatestoranalysis,shallberoundedoffinaccordancewithIS2:19.60‘Rulesforroundingoffnumericalvalues(revised,)’.Thenumberofsignificantplacesretainedintheroundedoffvalueshouldbethesameasthatofthespecifiedvalueinthisstandard.1IS73:2006IndianStandardPAVINGBITUMEN—SPECIFICATION(ThirdRevision)1SCOPEThisstandardcoverstherequirementforphysico-chemicalpropertiesofvariousgradesofpavinggradebitumenforuseasbindersintheconstructionofpavementsrelatedtohighways,expressways,airfields,ruralroadsandotheralliedconstructionandmaintenanceworks.2REFERENCESThefollowingstandardscontainprovisions,whichthroughreferenceinWtexgconstituteprovisionsofthisstandard.Atthetimeofpublicationtheeditionsindicatedwerevalid.Allstandardsaresubjecttorevisionandpartiestoagreementsbasedonthisstandardareencouragedtoinvestigatethepossibilityofapplyingthemostrecenteditionsofthestandardsindicatedbelow:ISNo.Title334:2002Glossaryoftermsrelatingtobitumen1201:1203:andtar(thirdrevision)978Methodsfortestingtarandbituminousmaterials:Sampling(firstrevision)978Methodsoftestingtarand-bituminousmaterials:Determimtionofpenetration~rstrevision)1205:1978Methodsfortestingtarandbituminousmaterials:Determinationofsofteningpoint@strevision)1206Methodsoftestingtarandbituminousmaterials:Determinationofviscosity:(Part2):1978Absoluteviscosity(Part3):1978Kinematicviscosity1208:1978Methodsfortestingtarandbituminousmaterials:Determinationofductility(firstrevision)1269:197.8Methodsfortesting.tarandbituminousmaterials:Determinationofflashpointandfwepoint(fwstrevision)1216:1978Methodsfortestingtarandbituminousmaterials:Determinationofvolubilityincarbondisulphideortrichloroethylene(firstrevision)3TERMINOLOGY‘Forthepurposeoft