路面回收利用的最新进展.pdf

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1、Update on Pavement Recycling2023 Alaska Asphalt Paving SummitAnchorage,AlaskaNovember 6,2023Jason Wielinski,P.E.Regional EngineerWho is ARRA?Who is ARRA?Asphalt Recycling and Reclamation Association Association comprised of:Contractors(34)Suppliers(30)Affiliates(21)Equipment Dealers(2)Consulting Eng

2、ineers(14)Agencies(42)FreeFree membership for agencies!www.ARRA.org Resources and Training MaterialsThe Need EverywhereThe Need EverywhereDwindling Budgets +Dwindling Resources+Demand for Sustainable Technologies+Demand by Public for Safe,Quality Pavements=Need for Alternative MethodsInIn-Place Recy

3、cling Helps Meet the ChallengePlace Recycling Helps Meet the ChallengeReuses 90-100%of existing materials,in-placeCosts 20-50%less than traditional methodsProduces up to 90%less greenhouse gassesReduces user delays20 to 40%faster constructionProven PerformanceARRA DisciplinesARRA DisciplinesCold Pla

4、ning(CP)Hot In-place Recycling(HIR)Cold Recycling(CR)Cold In-place Recycling(CIR)Cold Central Plant Recycling(CCPR)Full Depth Reclamation(FDR)Soil&Base Stabilization Surface or grade preparation for other rehabilitation techniques Temporary driving surface Improving ride quality Fine&Micro MillingCo

5、ld Cold PlaningPlaning HIR uses heat to soften the existing asphalt pavement Scarifies the heated,softened pavement(1 3 inches)Add rejuvenating agent and additives(if desired)Mix and place rejuvenated mix Compact pavement in one continuous process.Usually requires surface courseHot InHot In-place Re

6、cyclingplace Recycling Cold Central Plant Recycling(CCPR)Cold In-Place Recycling(CIR)Also called partial depth cold in-place recyclingCold Cold RecyclingRecycling Clean Rap=New Pavement:Stockpiled and kept clean Crushed RAP to gradation Produced at a central location using a central mixing plant Fra