au 2012-2013 pavement thermal study

AU BSCI Field Pavement Lab2012-2013 Pavement Thermal StudyMichael Hein, Mark Dougherty, Keith Rahn

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Research QuestionWhat is the relative thermal impact of various common pavement systems on stormwater temperatures?ObjectivesCompare surface temperatures of common pavement systemsCompare stormwater runoff and leachate temperatures among pavement systems

Pavement Thermal Study - BSCI Field Lab

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PlanPavement Thermal Study - BSCI Field Lab

8 ft4 ft

SprinklerIrrigation Lines

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Planning & Layout

Collaborators:Mark Dougherty BSEN ProfessorJoey Ellis AU FacilitiesJonathan Deason BSCI GRA


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Excavation & Formwork

Collaborators:AU Facilities Workers: Jason, Boom, JoeyCADC AR students BSCI 3450Dustan Jones, Taylor Rose - CADC grad studentsJonathan Deason BSCI GRA


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Conventional Concrete PlacementImpervious & Pervious

Collaborators:Charles Bell Ready Mix USAAU Facilities WorkersBSCI 3450 ARCH studentsJonathan Deason BSCI GRA


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Photocatalytic Concrete PlacementImpervious & Pervious

Pavement Thermal Study - BSCI Field LabCollaborators:Jim Render, Jonathan Harrell - ESSROC Cement Co.Dale Fisher - NPCPAJonathan Deason BSCI GRACADC AR students BSCI 3450

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Asphalt PlacementImpervious & Pervious

Collaborators:Michael Heitzman NCATBobby Maddox & Crew AU FacilitiesJonathan Deason BSCI GRACADC AR students BSCI 3450


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August 2012Pavement Thermal Study - BSCI Field Lab

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ActivityCollaboratorsExcavation, Forming, Placing six new 4 ft x 8 ft test paving slabs & stormwater runoff/infiltration capture system to match previous installation. Two light colored porous concrete paver system units, two dark colored units installedTwo control reference units, one of grass, one of gravel installed BSCI 3430 class AU Facilities backhoe & trencher operatorProf. HeinJon Stewart, Block USA

2013


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ActivityCollaboratorsPurchase, install, and test field weather station for collection of weather data. GRA, Dustan JonesURA , Alex Gandy

Apr 2013


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ActivityCollaboratorsExcavate, install, and test larger (1 ) water supply, valves, and controls from W. Samford Ave. to test site. Purchase new thermal probes and data collectors and calibrate all.URA, Alex GandyGRA, Taylor RoseAU Facilities trencher & equipment operatorDougherty, Hein, Rahn

May 2013


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ActivityCollaboratorsInstall and test new irrigation system including piping, sprinkler bodies and spray heads to deliver 1.76/hr simulated rainfall. URA, Alex GandyGRA, Taylor RoseRahn, Dougherty

May 2013


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ActivityCollaboratorsConduct ASTM C1701 Infiltration testing on all surfaces. GRA, Taylor RoseURA, Alex GandyProf. Mark Dougherty

May 2013

I = 1,600 in/hr


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Slab SystemAverage Infiltration rate ASTM C1701 (in/hr)CommentPervious Concrete (n=5)1600Higher than typical infiltration rate due to ideal mix and practiced placement technique1Pervious Asphalt (n=3)520Lower than typical infiltration rate due to small batch mix and over compaction1 Photocatalytic Pervious Concrete (n=3)150Lower than typical infiltration rate due to rich mix and unfamiliarity with product placementDark Pavers (n=1)568PICP pavers15% void surface area filled with No. 89 stoneLight Pavers (n=1)587PICP pavers15% void surface area filled with No. 89 stoneGravel (n=1)NA (est. > 15,00 in/hr)Water moved through test ring as fast as it could be pouredGrass (n=1)NA (est.

au 2012-2013 pavement thermal study

Engineering