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MembershipCOMPANYMEMBERSRELATEDASSOCIATIONSBirthoftheAshDevelopmentAssociationofAustraliaADAARonMcLarenwww.adaa.asn.auwww.ukqaa.org.auwww.acaa-usa.orgwww.cmit.csiro.auwww.circainfo.ca02ADAAAPRIL11AprimaryroleoftheADAAistobringtogetherproducersandmarketersofcoalcombustionproductsCCPs.OuractivitiescoverresearchanddevelopmentintoCCPusageadvocacyandtechnicalassistancetoCCPproducersandusersaswellasaforumfortheexchangeandpublicationofCCPinformation.FormoreinformationontheAssociationvisitusatUKQualityAshAssociationAmericanCoalAshAssociationCSIROAssociationofCanadianIndustriesRecyclingCoalAshAdelaideBrightonLimitedAlintaEnergyGroupLtdBoralCementLimitedCaleraCorporationCementAustraliaPtyLtdConneqIndustrialInfrastructurePtyLtdCSEnergyLtdD2GJointVentureDeltaElectricityEraringEnergyFlyashAustraliaPtyLtdGoldenBayCementNewZealandHolcimPtyLtdHyrockPtyLtdIndependentFlyAshBrokersPtyLtdIntergenMillmerranInternationalPowerKellerMineFillJVLoyYangPowerNRGGladstonePowerStationNucrushPtyLtdPozzolanicEnterprisesPtyLtdRioTintoRoadsTrafcAuthorityofNSWStanwellCorporationTarongEnergyTRUenergyVecorAustraliaVerveEnergyWestonMatrixTheADAAwasformedin1991atatimewhentherewasonlyonecrossingofSydneyHarbourbetweenthecityandNorthSydney.ThesecondcrossingthesoontobebuiltSydneyHarbourTunnelSHTwasacatalystfortheformationoftheADAA.Inthelate1980sTranseldproposedtodesignandconstructtheSHTusingsubmergedconcretetubeelements.ThisformofconstructioncastingmassiveconcretestructuresinadrydockthenoatingthemintoplaceinSydneyHarbourhadmanychallengesandreceivedwidemediacoverage.Thedesignlifeoftheconcretewas100years.TranseldsconsultantshadjustsuccessfullydesignedasimilartunnelinHongKongwithamixtureofgeneralpurposecementGPandyashFAusedforthebinder.TheconsultantsinitiallyproposedsimilarbindersfortheSydneytunnel.WhenthegeneralblendGBwasspeciedusingacementandgroundgranulatedblastfurnaceslagbinderitbecameapparentthatthereneededtobeastrongertechnicalandeducationpushforFA.WhilethedurabilitybenetsofFAconcretesatthetimewerewellknowntheywerelesswelldocumentedthanthoseoftheslagindustry.AtthattimeaBoralsubsidiarybusinessBoralPozzolanheldsharedownershipwithRoclaofFlyashAustraliaFAA.FAAwastheonlyFAsupplieroperatinginNSW.BlueCircleSouthernCementBCSCwasalsoownedbyBoralandactivelypromotedslagcementbasedproducts.TherewasarobustrivalrybetweenallbinderproducerscementslagandtheFA.BCSChadspentconsiderabletimeandresourcesdevelopingMarineCementwhichwasacombinationof35cementand65slag.TheywereanxioustondaprestigiousprojecttopromotetheproductandtheSHTwastheobviouschoice.AkeyreasonwhyMarineCementwasusedintheSHTwasthedatainthevastBCSCtestprogramwhichprovedthedurabilitypropertiesofslagcementstoachievethe100-yeardesignliferequirements.Duringthisperiodthecoalredpowerstationshadbecomemuchmoreawareandactiveinincreasingashutilisation.BoththeElectricityTrustofSAETSAandtheElectricityCommissionofNSWECNSWwereindependentlyfundingsignicantresearchanddemonstrationprojectstoincreasetheuseofFAinconcrete.ThenewsthattheSHTwasnolongergoingtouseyashconcretecausedconsternationtotheFAproducersandmarketersalike.ETSAsRoleyMillerattheNorthernpowerstationatPortAugustahadaveryhandsonResearchandDevelopmentRDprogram.WiththeassistanceofBarryButlerandBillTannerofRoclatheyproducedFAconcreteblocksonsite.ThestationevenhadafulloverheadbatchplantallowingittoproduceFAroadsaroundthepowerstation.SimilarlytheECNSWwasveryactivewithPeterNelsonensuringFAconcretewasspeciedinallitsmajorconstructionworks.TheECNSWfundedanumberofinvestigationsbyCSIROtosupporttheseactivities.WiththisbackgroundsomeformofcollaborationbetweentheashmarketersandthepowerstationstopromoteFAusageandsharethecostsofRDseemedsensible.FollowinginformaldiscussionswiththerelevantpartiesBoralPozzolansuggestedaformalmeetingtoconsidersettingupwhatwastobecometheADAA.TherehadbeenanearlierassociationforyashmarketerstheNationalAshAssociationNAAintheearly1980s.TheNAAwascomprisedofonlymarketersascoalredpowerstationswerenotinvitedtojoin.TheonlyreasonfortheformationoftheNAAwastohaveavoiceonStandardsCommitteesforthepublicationofanAustralianStandardforFA.FollowingthepublicationoftheStandardtheNAAdissolved.TheinitialmeetingoftheADAAincludedrepresentativesfromNSWQLDSAandWAcoveringthepowerproducersandthemarketers.UltimatelyitwastheECNSWETSAtheStateEnergyCommissionofWABoralRoclaandAdelaideBrightonCementwhoagreedtoformanAssociation.GeneratorsinVictoriaandQueenslandalongwithregionalmarketersdidnotjoinatthistime.RonMcLarenchairedtherstmeetingandoneofthersttaskswasanamefortheassociation.PeterHeeleysuggestedthecurrentnameandwhileitseemedalittlecumbersomenobodysuggestedanythingbettersotheADAAwasborn.IntheearlyyearstheADAAreceivedsignicantsupportin-kindandscalfromtheECNSWandlaterPacicPower.InparticularPeterNelsonadministeredtasksfromtheSydneyofce.AlaunchwasheldinAdelaidewithanappropriatepoliticalpresenceandanotabletalkfromAlecSamarintellingusthatpowerstationswereFAfactoriesthatmadeelectricityasaby-product.Thenexttaskwastosortoutafundingformulabasedonthevolumesofyashsoldintovariousenduses.MembershipfeesweresetatasufcientleveltoallowustoengagetheCSIROforacomprehensivetestprogramintothedurabilityaspectsofFAconcrete.ThisbuiltonextensiveCSIROstudiesdoneforECNSWandcoveredtheareaswhereinformationwaslackingontheSHTprojectinparticularchloridediffusionandresistancetosulphateattackinamarineenvironment.Togetherwiththecollationandproductionofextensivetechnicaldocumentationandliteraturewewereabletorestoretheprestigeofyashconcrete.InfactfortherecentSeacliffBridgenearWollongongNSWthetableswereturnedwithyashconcretereplacingtheoriginallyspeciedslagconcrete.RonMcLarenwastheManagerofBoralPozzolanandthefoundationChairmanoftheADAAin1991.RonMcLaren